Iodides-buliding-blocks

Electric Literature of 76801-93-9, A common heterocyclic compound, 76801-93-9, name is 5-Amino-N1,N3-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophthalamide, molecular formula is C14H18I3N3O6, 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.

Compound B (5356 kg) was suspended in a mixture of acetic anhydride and acetic acid (7760 L, 1.45 L/kg Compound B, 87 v/v % acetic anhydride and 13 v/v % acetic acid) at ambient temperature. This mixture was prepared by mixing acetic anhydride (6086 kg) and regenerated acetic anhydride (2295 kg), the latter containing 48 v/v % acetic anhydride and 52 v/v % acetic acid obtained from a previous batch. The mixture was heated to 55C. Then, p-toluene sulfonic acid (25 kg) was added and the reaction mixture was further heated to 124C over about 90 minutes. All solids were dissolved in the reaction, and 100 % of Compound B was acetylated. The remaining acetic anhydride/acetic acid (5580 L) was distilled off under reduced pressure resulting in a very viscous reaction mixture. Thirty-nine percent of the distillate could be re-used as reagent in a later batch without a discrete purification step.

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.

Adding a certain compound to certain chemical reactions, such as: 289039-83-4, name is Methyl 2-amino-5-bromo-3-iodobenzoate, 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 289039-83-4, COA of Formula: C8H7BrINO2

[0323] Pent-4-yn-l-ol (35.4 mg, 0.42 mmol), methyl 2-amino-5-bromo-3-iodobenzoate (100 mg, 0.28 mmol) ,PdCl2(PPh3)2 (45.9 mg, 0.06 mmol), DIEA (0.098 mL, 0.56 mmol)and copper(I) iodide (10.70 mg, 0.06 mmol) were suspended in THF (2 mL) under nitrogen. The reaction was stirred at rt for 2 hours. The solvent was removed. The crude product was purified by flash silica chromatography, elution gradient 0 to 80% EtOAc in petroleum ether. Pure fractions were evaporated to dryness to afford methyl 2-amino-5-bromo-3-(5-hydroxypent-l-yn-l-yl)benzoate (0954) (80 mg, 91 %) as a brown solid (80 mg, 91%). XH NMR (300 MHz,CDCl3-d6) delta ppm 1.67 – 1.76 (2H,m), 2.50 – 2.57 (2H, m), 3.50 – 3.82 (2H, m), 3.82 (3H, s), 4.58 (1H, tr), 6.76 (2H, brs), 7.52 (1H, d), 7.79(1H, d). LC-MS (Method A): m/z (ES+), [M+H]+ = 312.2; acid, HPLC tR = 1.54 mm.

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, Methyl 2-amino-5-bromo-3-iodobenzoate, other downstream synthetic routes, hurry up and to see.

Electric Literature of 2996-30-7, These common heterocyclic compound, 2996-30-7, name is 3-Fluoro-4-iodonitrobenzene, 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 2-fluoro-1-iodo-4-nitrobenzene (1.96 g, 7.34 mmol), bis(pinacolato)diboron (1.86 g, 7.34 mmol), dichloro[1,1′-bis(diphenylphosphino)ferrocene]palladium (II) dichloromethane adduct (0.599 g, 0.734 mmol), and potassium acetate (2.38 g, 24.2 mmol) in DMSO (14.7 mL) in a seal-able tube was degassed with nitrogen for 15 min, sealed, and stirred at 100 C. for 2.5 h. The reaction mixture was cooled to room temperature, diluted with water and ethyl acetate, and filtered over Celite. The aqueous layer was separated and re-extracted with ethyl acetate. The combined organic layers were washed with brine, dried over magnesium sulfate, filtered, and concentrated to a brown oil. Purification by flash column chromatography using ethyl acetate in hexanes (0%-20%) gave the desired product (1.60 g, 81.6%).

The synthetic route of 2996-30-7 has been constantly updated, and we look forward to future research findings.

Adding a certain compound to certain chemical reactions, such as: 25309-64-2, name is 1-Ethyl-4-iodobenzene, 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 25309-64-2, Recommanded Product: 1-Ethyl-4-iodobenzene

Step-1: Synthesis of tert-butyl (Z)-(2-(4-(2-(4-ethylphenyl)-l-(4-hydroxyphenyl)but-l-en-l- yl)phenoxy )ethyl)carbamate To a stirred solution of tert-butyl (E)-(2-(4-(l-(4-hydroxyphenyl)-2-(4,4,5,5-tetramethyl- l ,3,2-dioxaborolan-2-yl)but-l-en-l-yl)phenoxy)ethyl)carbamate (1.3 g, 2.55 mmol, Example- 46, Step-1) in 2-methyl THF (15 mL), l-iodo-4-ethylbenzene (0.651 mg, 2.8 mmol), 4M aqueous KOH (2 mL) and Pd(PPh3)2Cl2 (89 mg, 0.127 mmol) were added and the mixture was degassed with nitrogen for 15 min and heated at 85 C for 3 h. Upon completion, the reaction mixture was diluted with EtOAc. The organic layer was washed with water followed by brine, dried over anhydrous sodium sulphate, filtered and concentrated under reduced pressure. The crude product was purified by silica gel chromatography (2:8 EtOAc in n- hexane) to give title compound (0.5 g, 40%).

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, 1-Ethyl-4-iodobenzene, other downstream synthetic routes, hurry up and to see.

These common heterocyclic compound, 1829-28-3, name is Ethyl 2-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. Formula: C9H9IO2

In a test tube equipped with a stirring bar and a septum rubber,Under argon flow, bis (trifluoromethyl) zinc (DMPU) 2 complex (92 mg, 0.2 mmol),After adding copper (I) chloride (1.9 mg, 0.01 mmol), DMPU (0.2 ml) and ethyl 2-iodobenzoate (0.1 mmol, 16.6 mul)Replace septum rubber with screw cap,The reaction was carried out at 50 ° C. for 24 hours.After completion of the reaction,After cooling,As a result of quantification by 19 F-NMR using benzotrifluoride using the reaction solution as an internal standard substance,The yield of the objective ethyl 2- (trifluoromethyl) benzoate was 82percent.

The synthetic route of Ethyl 2-iodobenzoate has been constantly updated, and we look forward to future research findings.

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. 629-09-4, name is 1,6-Diiodohexane belongs to iodides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below. Application In Synthesis of 1,6-Diiodohexane

A suspension of sodium hydride (60%, 0.48 g, 12 mmol) in 20 ml of DMF was prepared. 1-(2-Chloro-5-thiazolylmethyl)-2-nitroiminoimidazolidine (2.61 g, 10 mmol) was added to this suspension. The resulting mixture was then stirred for 1 hour at room temperature. 1,6-Diiodohexane (1.64 g, 5 mmol) was added dropwise to this reaction mixture over the course of 30 minutes while cooling the reaction mixture with ice. Following completion of dropping, the mixture was stirred for 4 hours at room temperature. The DMF was distilled off from the reaction mixture under reduced pressure. The residue was then shaken with a mixture of water and chloroform. After separating the chloroform layer and drying, the solvent was distilled off under reduced pressure. The semi-solid residue was subjected to silica gel column chromatography with a mixture (15:1 (v/v)) of ethyl acetate and ethanol as the eluate. The crude product was recrystallized from methanol. The yield of crystalline product was 0.22 g (70%), and the melting point was 204 to 206 C. The results of elementary analysis and NMR analysis are shown below. [0117] Elementary Anal., Found (Calc.): C 36.80 (36.67), H 4.51 (4.33), N 23.50 (23.13). [0118] NMR (CDCl3, delta, ppm): 1.34 (4H, m), 1.60 (4H, m), 3.32 (4H, t, J=7.3), 3.66 (4H, m) , 3.77 (4H, m) , 4.57 (4H, s), 7.49 (2H, s). [0119] Based on the results of analysis, the compound of Example 14 was determined to be 1,6-bis[1-(2-chloro-5-thiazolylmethyl)-2-nitroiminoimidazolidin-3-yl]hexane having the structural formula indicated below.

The synthetic route of 629-09-4 has been constantly updated, and we look forward to future research findings.

Electric Literature of 31599-61-8,Some common heterocyclic compound, 31599-61-8, name is 4-Iodo-1,2-dimethylbenzene, molecular formula is C8H9I, 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.

General procedure: 3,4-Dimethyl iodobenzene (0.10 mol) was dissolved in xylene (200 mL), and bistriphenylphosphine palladium dichloride was added.(0.0005 mol) and tert-butyl potassium (0.20 mol), after stirring, 3-aminopentane (0.11 mol) was added, the reaction temperature was adjusted to 90 C, and the reaction was carried out for 6 hr. After the reaction, the mixture was cooled to room temperature, and filtered. 100 ml of 5% aqueous citric acid solution, 100 ml of saturated sodium carbonate solution,Wash with 100 ml of saturated brine and dry over anhydrous sodium sulfate.The mixture was concentrated under reduced pressure until the liquid surface was not foamed to afford 18.4 g of an oily product. The product yield was 96.3% based on 3,4-dimethyl iodobenzene, and the purity was determined by HPLC to be 96.8 %.

These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 4-Iodo-1,2-dimethylbenzene, its application will become more common.

Synthetic Route of 58313-23-8, A common heterocyclic compound, 58313-23-8, name is Ethyl-3-iodobenzoate, molecular formula is C9H9IO2, 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.

Ethyl 3-iodobenzoate (939mg, 3.40mmol) was dissolved in DMF (2mL) and a solution of 3-cyanophenylboronic acid (500mg, 3.40mmol) in DMF (5mL) was added. A solution of Pd(OAc)2 (15mg, 0.068mmol) and Na2C03 (858mg, 10.2mmol) in water (2mL) was added and the reaction mixture was heated at 110C for 2d. The reaction mixture was concentrated in vacuo and partitioned between DCM (150mL) and water (50mL). The aqueous fraction was extracted with DCM (50mL) and the combined organic fractions were dried (MgSC^) and concentrated in vacuo. The residue was purified by column chromatography to give the title compound (767mg, 90%) as a pale yellow liquid. LCMS: ES+ 252.1 [MH]+.

The synthetic route of 58313-23-8 has been constantly updated, and we look forward to future research findings.

Electric Literature of 58313-23-8, A common heterocyclic compound, 58313-23-8, name is Ethyl-3-iodobenzoate, molecular formula is C9H9IO2, 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.

To a solution of ethyl 3-iodobenzoate (13.16 g, 47.70 mmol) in THF at -30 to -40 0C isopropylmagnesium chloride (23.8 mL of a 2M solution, 47.70 mmol) was added dropwise. The resulting mixture was stirred for one hour before 5- chloro-2-methylbenzaldehyde (7.0 g, 45.3 mmol) was added. The reaction mixture was stirred at -30 0C for 30 min, then warmed to room temperature and stirred for an additional 10 min. Aqueous NH4Cl and EtOAc were added and the layers separated. The organic layer was then washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. The crude material was purified using silica gel chromatography to afford 10.2 g of ethyl 3-[(5-chloro-2- methylphenyl)(hydroxy)methyl]benzoate (70% yield).

The synthetic route of 58313-23-8 has been constantly updated, and we look forward to future research findings.

Electric Literature of 5876-51-7, These common heterocyclic compound, 5876-51-7, name is 5-Iodobenzo[d][1,3]dioxole, 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.

General procedure: A suspension of aryl halide (1.0 mmol), K2CO3 (2.0 mmol), Fe3O4SiO2-EDTA-Pd (0.008 g, 0.4 mol%) in H2O/DMF [2/1 (v/v)] (3 mL) was mixed in a reaction flask and n-butylacrylate or styrene (1.2 mmol) was added. The reaction mixture was stirred at 100 C for an appropriate time. After completion of the reaction (monitored by TLC), it was cold at room temperature, diluted with ethyl acetate (10 mL) and then the catalyst was separated from the solution by an external magnetic field. The organic phase was separated and dried over MgSO4 and the solvent was then removed under reduced pressure. Pure products were obtained after isolation of the residue by column chromatography on silica (hexane/ethyl acetate).

Statistics shows that 5-Iodobenzo[d][1,3]dioxole is playing an increasingly important role. we look forward to future research findings about 5876-51-7.