Tag: M.W=300-400

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 628-77-3, name is 1,5-Diiodopentane, A new synthetic method of this compound is introduced below., COA of Formula: C5H10I2

Step 1: preparation of tert-butyl (trans-4-(piperidin-1-yl)cyclohexyl)carbamate Tert-butyl (trans-4-aminocyclohexyl)carbamate (214 mg, 1 mmol) and 1,5-diiodopentane (324 mg, 1 mmol) were dissolved in acetonitrile (5 mL). The reaction liquid was added with potassium carbonate (414 mg, 3 mmol), and reacted at 70 C for 2 hours. The reaction liquid was concentrated to dryness, dissolved in ethyl acetate (10 mL), washed with saturated brine, and the organic phase was dried over anhydrous sodium sulfate and concentrated under reduced pressure to give 250 mg of a pale yellow solid. Yield: 88.6%. MS (ESI, m/z): [M+H]+: 283.3.

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 25252-00-0, name is 2-Bromo-5-iodobenzoic acid, A new synthetic method of this compound is introduced below., Recommanded Product: 2-Bromo-5-iodobenzoic acid

2-Bromo-5-iodobenzoic acid (6.54 g, 20.0 mmol) was dissolved in DMF (70 mL). Potassium bicarbonate (2.2 g, 22.0 mmol) was added, followed by benzyl bromide (2.8 mL, 22.0 mmol). The mixture was stirred at rt under N2 for 12 h. The reaction mixture was poured into water and extracted with EtOAc. The combined organic solution was washed with brine, dried over MgSO4, and concentrated and dried to give 9.05 g of the benzyl ester.

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Some common heterocyclic compound, 25252-00-0, name is 2-Bromo-5-iodobenzoic acid, molecular formula is C7H4BrIO2, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. HPLC of Formula: C7H4BrIO2

Preparation of 4-bromo-3-hydroxymethyl-1-iodo-benzene Oxalyl chloride (13.0 mL) is added to an ice-cold solution of 2-bromo-5-iodo-benzoic acid (49.5 g) in CH2Cl2 (200 mL). DMF (0.2 mL) is added and the solution is stirred at room temperature for 6 h. Then, the solution is concentrated under reduced pressure and the residue is dissolved in THF (100 mL). The resulting solution is cooled in an ice-bath and LiBH4 (3.4 g) is added in portions. The cooling bath is removed and the mixture is stirred at room temperature for 1 h. The reaction mixture is diluted with THF and treated with 0.1 M hydrochloric acid. Then, the organic layer is separated and the aqueous layer is extracted with ethyl acetate. The combined organic layers are dried (Na2SO4) and the solvent is evaporated under reduced pressure to give the crude product. Yield: 47.0 g (99% of theory)

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 25252-00-0, its application will become more common.

Some common heterocyclic compound, 160976-02-3, name is 5-Bromo-1,3-difluoro-2-iodobenzene, molecular formula is C6H2BrF2I, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. COA of Formula: C6H2BrF2I

A 2 M aqueous Na2CO3 solution (1 .51 mL) is added to a mixture of 5-bromo-1 ,3- difluoro-2-iodo-benzene (1 .00 g) and 5-(4,4,5,5-tetramethyl-[1 ,3,2]dioxaborolan-2-yl)- 2-triisopropylsilanyl-oxazole (1 .87 g) in 1 ,4-dioxane (9 mL) and methanol (3 mL). The mixture is sparged with argon and [1 ,1 ‘-bis(diphenylphosphino)-ferrocene]dichloro- palladium dichloromethane complex (380 mg) is added. The resulting mixture is stirred at 80C overnight. Since the conversion is not complete, the same amounts of 5-(4,4,5,5-tetramethyl-[1 ,3,2]dioxaborolan-2-yl)-2-triisopropylsilanyl-oxazole, 2 M aqueous Na2CO3 solution, and catalyst are added and the mixture is again stirred overnight at 80C. The triisopropylsilyl protecting group is cleaved under these conditions. After cooling to room temperature, ethyl acetate and water are added. The aqueous phase is extracted with ethyl acetate and the combined organic phases are washed with brine, dried over MgSO4, and concentrated in vacuo. The residue is chromatographed on silica gel (cyclohexane/ethyl acetate 1 :0? 1 :1 ) to afford the title compound. LC (method 4): tR = 1 .18 min; Mass spectrum (ESI+): m/z = 260/262 (Br) [M+H]+.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 160976-02-3, its application will become more common.

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 31827-94-8, name is 2-Bromo-1-(4-iodophenyl)ethanone, A new synthetic method of this compound is introduced below., Recommanded Product: 2-Bromo-1-(4-iodophenyl)ethanone

Step l-515a. Into a mixture of 2-bromo-l-(4-iodophenyl)ethanone (5g, 15.4 mmol) and (S)-l-(tert-butoxycarbonyl)pyrrolidine-2-carboxylic acid (3.48g, 16.1 mmol) in acetonitrile (40 mL) was added diisopropylethylamine (2.4 mL, 17 mmol). The resulting mixture was stirred at rt for 3 hours before being partitioned between EtOAc and aqueous NaHCO3. The organic phase was separated, dried (Na2SOzI) and concentrated to afford a brown oil. It was purified by flash column chromatography (silica, hexane-EtOAc) to give the desired product as light yellow oil (6.0 g, 86%). ESIMS m/z = 481.94 [M+Naf.

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Electric Literature of 249647-24-3, These common heterocyclic compound, 249647-24-3, name is Methyl 3-bromo-4-iodobenzoate, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

A solution of methyl 3-bromo-4-iodobenzoate (4.3 g, 12.6 mmol) in CH2Cl2 was cooled, under N2, to -78 C. DIBAL-H (25.2 mL of a 1M solution in CH2Cl2) was added slowly to the solution, which was stirred at -78 C. for 45 minutes and then allowed to come to room temperature. Next, the reaction mixture was diluted with 1M HCL (40 mL) and stirred for 30 minutes. The reaction was further diluted with water and extracted with CH2Cl2. The organic phase was dried (Na2SO4) and concentrated under vacuum to afford the intermediate (3.2 g, 82%) as a solid. 1HNMR (CDCl3) delta ppm: 7.85 (1H), 7.67 (1H), 7.02 (1H), 4.65 (2H), 1.76 (1H, OH).

The synthetic route of 249647-24-3 has been constantly updated, and we look forward to future research findings.

Electric Literature of 51839-15-7, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 51839-15-7, name is Dimethyl 5-iodoisophthalate belongs to iodides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.

4.10 g (12.8 mmol) dimethyl 5-iodo-isophthalate were dissolved in 80 ml DMF. 3.32 g (20.1 mmol) 2-carbamoyl-phenylboric acid, 3.00 ml (21.6 mmol) TEA, 3.00 ml (167 mmol) water, 75 mg (0.33 mmol) palladium(II)-acetate as well as 102 mg (0.34 mmol) tri-ortho-tolylphosphine were added and the solution was heated to 100 C. for 2.5 h. The reaction solution was cooled and the solvent was distilled off i. vac. The residue was chromatographed on silica gel (gradient: DCM auf DCM/MeOH 7:3). 2.53 g (63%) of 11-a were obtained.RT (HPLC-MS)=2.68 min.ES-MS (M+H)+=314

In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, Dimethyl 5-iodoisophthalate, other downstream synthetic routes, hurry up and to see.

Reference:
Patent; Fuchs, Klaus; Eickmeier, Christian; Heine, Niklas; Peters, Stefan; Dorner-Ciossek, Cornelia; Handschuh, Sandra; Nar, Herbert; Klinder, Klaus; US2010/144681; (2010); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 755027-18-0, name is 1-Bromo-4-iodo-2-methoxybenzene, A new synthetic method of this compound is introduced below., Formula: C7H6BrIO

To a solution of 2-bromo-5-iodoanisole (12.5 g, 40 mmol) in DCM (200 mL) was added a 1.0 M DCM solution OfBBr3 (40 mL) dropwise at 0 0C. The reaction mixture was then allowed to warm to room temperature. After stirring overnight, the reaction mixture was cooled to 0 C and MeOH (5 mL) was added dropwise. After stirring for 10 minutes at room temperature, the reaction mixture was washed with IN HCl (2 x 50 mL), water (50 mL) and brine (50 mL). The organic layer was dried over MgSO4. filtered and concentrated under vacuum. The residue was then dissolved in DMF (100 mL) and Cs2CO3 (26 g, 80 mmol) and 2-(benzyloxycarbonylamino)ethyl methanesulfonate (11 g, 40 mmol) were added. After stirring at 80C under nitrogen for 4 h, the reaction mixture was dissolved in EtOAc (100 mL). The organic layer was washed with brine (3 x 50 mL), dried over MgSO4 and filtered. The solvent was removed under vacuum and the crude compound was purified by flash chromatography using cyclohexane/EtOAc (85/15) as eluent to afford the title compound (11.5 g, 60% yield) as a white solid. ESMS; m/z 476, 478 (M+l), 493, 495 (M+18) 1H-NMR (CDCl3): 53.64 (q, J= 5.2 Hz, 2H), 4.05 (t, J= 4.7 Hz, 2H), 5.12 (s, 2H), 5.33 (bs, IH), 7.15-7.24 (m, 3H), 7.35 (bs, 5H).13C-NMR (CDCl3): 540.4, 67.0, 68.7, 92.4, 112.4, 122.7, 128.2, 128.2, 128.6, 131.5, 134.6, 136.4, 155.4, 156.4.Theoretical Mass: (M + Na) 497.91777. Measured Mass: (M + Na) 497.91638 Microanalysis: %C 40.41 (40.36), %H 3.24 (3.18), %N 2.86 (2.94) M.p. 700C

The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.

Reference:
Patent; UCL BUSINESS PLC; WO2009/27679; (2009); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Related Products of 1258298-01-9, A common heterocyclic compound, 1258298-01-9, name is 2,6-Dichloro-4-iodobenzoic acid, molecular formula is C7H3Cl2IO2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.

4-Amino-2,6-dichloro-phenol (50 g) was treated with B0C2O (69g ) in 1 ,4-dioxane (0.8 L) at reflux for 18h before the volatiles were removed in vacuo affording (3,5-dichloro-4-hydroxy-phenyl)-carbamic acid fert-butyl ester (70 g), which was used for next step without further purification. This procedure was repeated to afford more of this material. 86 g of the compound and 2,6-dimethylpyridine (49 g) were dissolved in DCM (0.9 L). Tf20 (104 g) was added drop-wise at -78 C. The mixture was allowed to warm to room temperature whereafter it was stirred for 2h. The crude mixture was partitioned between water and DCM. The organic layer was dried over Na2S04, filtered, and concentrated in vacuo. The residue was purified by column chromatography on silica gel (eluent: petane:EtOAc 30: 1) to afford trifluoro-methanesulfonic acid 4-fert-butoxycarbonylamino-2,6- dichloro-phenyl ester (73 g). This material was mixed with Pd(DPPF)Ci2 (4 g), triethylamine (102 mL) in a mixture of methanol (580 mL) and DMF (384 mL). The mixture was refluxed under an atmosphere of carbon monoxide overnight before it was cooled, concentrated in vacuo. The residue was partitioned between water and EtOAc. The organic layer was washed with brine, dried over Na2S04, filtered, and concentrated in vacuo. The residue was purified by column chromatography on silica gel (eluent: pentane:EtOAc 80: 1) to afford A-tert- butoxycarbonylamino-2,6-dichloro-benzoic acid methyl ester (12 g). 7 g of this material was dissolved in 37% aq HC1 (70 mL), and a solution of sodium nitrite (3.75 g) in water (100 mL) was added drop-wise at 0 C. The mixture was stirred for 30 min at 0 C before it was filtered and the filtrate was added to a pre-cooled solution of potassium iodide (24 g) at 0 C. The mixture was warmed to room temperature and stirred overnight. The mixture was extracted with EtOAc. The organic layer was washed with sat. aq NaHSC>3 before it was dried over Na2S04, filtered, and concentrated in vacuo. The residue was purified by column chromatography on silica gel (eluent: pentane:EtOAc 50: 1) to afford 2,6-dichloro-4-iodo- benzoic acid methyl ester (7.9 g). This material was dissolved in a mixture of pyridine (40 mL) and water (7 mL) and treated with lithium iodide (3.2 g) at 130 C for 30h before the volatiles were removed in vacuo. The residue was partitioned between 2M aq HC1 and EtOAc. The organic layer was concentrated in vacuo to afford 2,6-dichloro-4-iodo-benzoic acid (3 g). 0.5 g of this material was stirred in thionyl chloride (8 mL) at 60 C for 3h before excess thionyl chloride was removed in vacuo. The residue was washed with ether and dried to afford 2,6-dichloro-4-iodo-benzoyl chloride (0.53g) that was used directly in the next step where it was dissolved in a mixture of DMF (20 mL) and DIPEA (0.57 mL). To this solution was added lid (277 mg). The mixture was stirred at room temperature for lh. The volatiles were removed in vacuo, and residue was purified by chromatography on silica gel (eluent: DCMMeOH 100:1 to 30:1) to afford 2,6-dichloro-4-iodo-benzoic acid N’-(2-methyl- pyrido[2,3-b]pyrazin-3-yl)-hydrazide (250 mg). This procedure was repeated to afford more material. 380 mg of the compound was dissolved in 1 ,4-dioxane (5 mL). Phosphoryl chloride (4 mL) was added, and the mixture was stirred at 90 C for 1.5h. The volatiles were removed in vacuo. The residue was partitioned between DCM and water. The organic layer was washed with sat. aq. NaHCOs, dried over NaSO i, filtered, and concentrated in vacuo. The residue was purified by preparative TLC (eluent: pentane:EtOAc 2:1) to afford example Id6 (45.5 mg). LC/MS (method WXE-AB10): RT(PDA) = 2.39 min; PDA/ELS purities 97.1% / 98.3%; mass observed 456.0.

The synthetic route of 1258298-01-9 has been constantly updated, and we look forward to future research findings.

Reference:
Patent; H. LUNDBECK A/S; J?RGENSEN, Morten; BRUUN, Anne Techau; RASMUSSEN, Lars Kyhn; WO2013/34761; (2013); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Adding a certain compound to certain chemical reactions, such as: 61203-48-3, name is 2-Iodo-4,5-dimethoxybenzoic acid, belongs to iodides-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 61203-48-3, Computed Properties of C9H9IO4

The intermediate 4-amino-6,7-methylenedioxyquinoline o-iodobenzamide derivatives used in Examples 13. a.- 16. a. were prepared using the following general procedure.[221] A 2.0M solution of oxalyl chloride in CH2CI2 (1.3 equiv.) was added to a solution of 2-iodo-5,6-dimethoxybenzoic acid (1.0 equiv.) in anhydrous CH2CI2 (~ 60 mL per 10 mmol benzoic acid) and the solution stirred at reflux for 3 h. The mixture was allowed to cool and was then concentrated to dryness in vacuo. To the residue was added a solution of appropriate 4-amino-6,7-dimethoxyquinoline (1.0 equiv), triethylamine (2 equiv.) in CH2CI2 (~ 60 mL per 4 mmol aminoquinoline). The reaction mixture was then stirred at reflux under N2. . In the case of those derivatives that have an alkylamine incorporated in their structure, the residue was partitioned between CHCI3 and 10% NaOH. The aqueous layer was repeatedly separated with CHCI3. All of the CHCI3 solutions (initial partition and extracts) were combined and dried (MgS04). The aqueous layer was neutralized with 20% NaOH and extracted with CHCI3, dried (MgS04) and evaporated.Example 13.b. N-(6,7-Methylenedioxyquinolin-4-yl)-N-[(2-(i- butyldimethylsilanyloxy)-ethyl] -2-iodo-4,5-dimethoxybenzamide. Prepared from 4- N-[2-(t-Butyldimethylsilanyloxy)]ethyl]amino-6,7-methylenedioxyquinoline (400 mg, 1.15 mmol) in 51.7% yield with a reaction time of 12 h, from the acid chloride prepared using 5.0 mmol of oxalyl chloride and 1.38 mmol of 2-iodo-5,6- dimethoxybenzoic acid. Compound 8h had: mp 79-80 C; IR (KBr); 1653 1H NMR (CDCI3); delta 0.004 (d, 3H, J = 4.2Hz), 0.82 (s, 9H), 3.26 (s, 3H), 3.67 (s, 3H), 3.84- 4.02 (m, 4H), 6.13 (d, 2H, J = 4Hz), 6.40 (s, 1H), 7.02 (s, 1H), 7.33 (d, 1H, J = 4.2Hz), 7.36 (s, 1H), 7.42 (s, 1H), 8.52 (d, 1H, J = 4Hz); HRMS calcd for C27H33IS1N2O6H 637.1232; observed 637.1212

If you are interested in these compounds, you can also browse my other articles.Thank you for taking the time to read this article. I hope you enjoyed it.

Reference:
Patent; GENZYME CORPORATION; TEICHER, Beverly, A.; SCHMID, Steven, M.; WO2012/15901; (2012); A1;,
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com