Month: April 2022

In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Asymmetric Synthesis of Chiral Organofluorine Compounds: Use of Nonracemic Fluoroiodoacetic Acid as a Practical Electrophile and Its Application to the Synthesis of Monofluoro Hydroxyethylene Dipeptide Isosteres within a Novel Series of HIV Protease Inhibitors, published in 2001-08-01, which mentions a compound: 138775-03-8, mainly applied to fluoroacetamide nitroalkene diastereoselective conjugate addition preparation HIV1 protease inhibitor; asym alkylation fluoroiodoacetate amide enolate preparation HIV1 protease inhibitor; fluoro ketone preparation HIV1 protease inhibitor, Safety of (S)-4-((Benzyloxy)carbonyl)-1-(tert-butoxycarbonyl)piperazine-2-carboxylic acid.

Two stereoselective routes to a series of diastereomeric inhibitors of HIV protease, monofluorinated analogs of the Merck HIV protease inhibitor indinavir, are described. The two routes feature stereoselective construction of the fluorinated core subunits by asym. alkylation reactions. The first-generation syntheses were based on the conjugate addition of the lithium enolate derived from pseudoephedrine α-fluoroacetamide to trans-nitroalkene Ph-CH2-CH:CH-NO2, a modestly diastereoselective transformation. A more practical second-generation synthetic route was developed that is based on a novel method for the asym. synthesis of organofluorine compounds, by enolate alkylation using optically active fluoroiodoacetic acid as the electrophile in combination with a chiral amide enolate. Resolution of fluoroiodoacetic acid with ephedrine provides either enantiomeric form of the electrophile in ≥96% ee. Alkylation reactions with this stable and storable chiral fluorinated precursor are shown to proceed in a highly stereospecific manner. With the development of substrate-controlled syn- or anti-selective reductions of α-fluoro ketones (I; F, CH2Ph trans and I; F, CH2Ph = cis; diastereomeric ratios 12:1-84:1), efficient and stereoselective routes to each of the four targeted inhibitors were achieved. The optimized synthetic route to the most potent inhibitor (II; Ki = 2.0 nM) proceeded in seven steps (87% average yield per step) from aminoindanol hydrocinnamide and (S)-fluoroiodoacetic acid, and allowed for the preparation of more than 1 g of this compound The inhibition of HIV-1 protease by each of the fluorinated inhibitors was evaluated in vitro, and the variation of potency as a function of inhibitor stereochem. is discussed.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Huse, Kevin; Weinert, Hanns; Woelper, Christoph; Schulz, Stephan published an article about the compound: Mesitylcopper(I)( cas:75732-01-3,SMILESS:[Cu]C1=C(C)C=C(C)C=C1C ).Application of 75732-01-3. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:75732-01-3) through the article.

Two copper complexes 17Fnac2Cu(C6H6) and 17Fnac2CuCO containing the monoanionic, perfluorinated β-diketiminate 17Fnac2- ligand (I) (17Fnac2 = FC[C(CF3)N(C6F5)]2) were synthesized and characterized by IR and NMR spectroscopy (1H, 13C, 19F), cyclovaltammometry (CV), elemental anal. and single crystal X-ray diffraction. The perfluorinated 17Fnac2- ligand marginally reduces the π-back-bonding capacity of the copper center to the carbonyl group in 17Fnac2CuCO when compared with the corresponding 16Fnac2- substituted complexes but substantially when compared with the fluorine free substituted derivatives Quantum chem. calculations gave deeper insight into the bonding situation of this carbonyl complex, while CV studies were performed to determine the oxidation potential of 17Fnac2Cu(C6H6) in solution Based on these data, the influence of the degree of fluorination in different β-diketimine ligands on the electronic nature of the corresponding copper complexes is discussed.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about Reaction of copper aryls with imidazol-2-ylidenes or triphenylphosphine. Formation of 1:1-adducts with two-coordinate copper atoms, the main research direction is imidazolylidene reaction copper aryl; triphenylphosphine reaction copper aryl; copper aryl carbene complex preparation structure DFT; crystal structure copper two coordinate aryl imidazolylidene triphenylphosphine adduct; mol structure copper two coordinate aryl imidazolylidene triphenylphosphine adduct.COA of Formula: C9H11Cu.

The reaction of the Cu aryls CuDmp (Dmp = 2,6-Mes2C6H3; Mes = 2,4,6-Me3C6H2) and CuMes with the σ-donors PPh3 and 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene [C[N(i-Pr)CMe]2] affords the adducts DmpCu←PPh3 (1), DmpCu←C{N(i-Pr)CMe}2 (2) and MesCu←C{N(i-Pr)CMe}2 (3) in 65-84% yields. The colorless compounds were characterized by 1H and 13C NMR spectroscopy, single crystal structure anal., and also by 31P NMR spectroscopy of 1, elemental anal. of 2, mass spectrometry of 2 and 3, IR spectroscopy of 2 and m.p. of 2 and 3. In the solid-state structures the two-coordinate Cu atoms have relatively short Cu-P and Cu-C(carbene) distances of 218.91(11) of 1, 190.2(3) of 2 and 191.1(4) pm of 3. DFT calculations at the B3PW91 level were performed for the model compound PhCu←C[N(H)CH]2 and also for the free carbene ligand C[N(H)CH]2.

If you want to learn more about this compound(Mesitylcopper(I))COA of Formula: C9H11Cu, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(75732-01-3).

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

SDS of cas: 28903-71-1. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II), is researched, Molecular C48H38CoN4O4, CAS is 28903-71-1, about ZIF-8 MOF Encapsulated Co-porphyrin, an Efficient Electrocatalyst for Water Oxidation in a Wide pH Range: Works Better at Neutral pH.

Water oxidation (WO) is the most important and thermodynamically challenging process associated with water splitting. Several metal porphyrins are reported to perform catalytic WO through the central metal but [5,10,15,20-tetrakis(4-methoxyphenyl)porphyrinato]cobalt(II) (abbreviated as CoTMPP), which is well-known for its ability to perform oxygen reduction reaction (ORR), lacks the capacity to perform WO. Here we have successfully activated CoTMPP towards electrochem. WO by means of its in situ encapsulation inside the cavity of a versatile metal organic framework (MOF), known as zeolitic imidazolate framework-8 (ZIF-8). The composite, thus prepared i. e., CoTMPP@ZIF-8 (abbreviated as CTMZ-8), behaves as a heterogeneous, robust, and efficient electrocatalyst for oxygen evolution reaction (OER) at a wide pH range (from acidic to neutral). Required overpotential (η) of 387.4 mV (neutral pH) and 562.7 mV (pH 2) and high turnover frequency (TOF) of 2.7 s-1 (at neutral pH) make this composite (CTMZ-8) an efficient electrocatalyst for WO. To the best of our knowledge, this is the first report of electrocatalytic WO by CoTMPP.

If you want to learn more about this compound(5,10,15,20-Tetrakis (4-methoxyphenyl)-21H,23H-porphine cobalt (II))SDS of cas: 28903-71-1, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(28903-71-1).

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Suzuki, Toshio; Kasai, Naoya; Minamiura, Noshi researched the compound: (2S)-(+)-3-Chloropropane-1,2-diol( cas:60827-45-4 ).Quality Control of (2S)-(+)-3-Chloropropane-1,2-diol.They published the article 《Microbial production of optically active 1,2-diols using resting cells of Alcaligenes sp. DS-S-7G》 about this compound( cas:60827-45-4 ) in Journal of Fermentation and Bioengineering. Keywords: diol production Alcaligenes enantioselective oxidation. We’ll tell you more about this compound (cas:60827-45-4).

A novel generation method of optically active 1,2-diols with excellent optical purity (>98% enantiomeric excess) from their racemates was developed using the resting cells of Alcaligenes sp. DS-S-7G. This method was based on microbial enantioselective oxidation of the racemic 1,2-diols. When 1% 1,2-butanediol was used as a substrate, the degradation reaction in the presence of NAD+ could be carried out 8 times in 200 h.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: (2S)-(+)-3-Chloropropane-1,2-diol( cas:60827-45-4 ) is researched.Name: (2S)-(+)-3-Chloropropane-1,2-diol.Ford, W. C. L.; Harrison, Anne; Waites, G. M. H. published the article 《Effects of the optical isomers of α-chlorohydrin on glycolysis by ram testicular spermatozoa and the fertility of male rats》 about this compound( cas:60827-45-4 ) in Journal of Reproduction and Fertility. Keywords: chlorohydrin sperm glycolysis fertility. Let’s learn more about this compound (cas:60827-45-4).

When 0.1 mM S-α-chlorohydrin [60827-45-4] was present in incubations, glycolysis by ram testicular spermatozoa was almost completely inhibited whereas 10 mM R-α-chlorohydrin [57090-45-6] had no effect. Male rats dosed orally with S-α-chlorohydrin (3.25 mg/kg/day) became much less fertile than controls but those dosed with R-α-chlorohydrin (13 mg/kg/day) did not. The loss of fertility was associated with a reduced ability of spermatozoa from the cauda epididymidis of these rats to oxidize glucose [50-99-7]. Apparently, the S enantiomer is responsible for both the inhibition of sperm glycolysis and the reduction in fertility caused by the racemic mixture of α-chlorohydrin.

If you want to learn more about this compound((2S)-(+)-3-Chloropropane-1,2-diol)Name: (2S)-(+)-3-Chloropropane-1,2-diol, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(60827-45-4).

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: (2S)-(+)-3-Chloropropane-1,2-diol(SMILESS: OC[C@H](O)CCl,cas:60827-45-4) is researched.Related Products of 591-54-8. The article 《Inhibition of fructolytic enzymes in boar spermatozoa by (S)-α-chlorohydrin and 1-chloro-3-hydroxypropanone》 in relation to this compound, is published in Australian Journal of Biological Sciences. Let’s take a look at the latest research on this compound (cas:60827-45-4).

When boar spermatozoa were incubated with (S)-α-chlorohydrin  [60827-45-4], glyceraldehyde-3-phosphate dehydrogenase (GPD) [9001-50-7] activity was inhibited. The (R)-isomer had no effect whereas (R,S)-3-chlorolactaldehyde  [84709-24-0] also inhibited GDP and lactate dehydrogenase  [9001-60-9]. The in vitro production of (S)-3-chlorolactaldehyde  [86747-03-7], the active metabolite of (S)-α-chlorohydrin, was attempted by incubating boar spermatozoa with 1-chloro-3-hydroxypropanone  [24423-98-1]. Preliminary results indicated that this compound is converted into (S)-3-chlorolactaldehyde as well as to another metabolite which is an inhibitor of other enzymes within the fructolytic pathway.

If you want to learn more about this compound((2S)-(+)-3-Chloropropane-1,2-diol)HPLC of Formula: 60827-45-4, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(60827-45-4).

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

Davies, Robert P.; Hornauer, Stefan; White, Andrew J. P. published an article about the compound: Mesitylcopper(I)( cas:75732-01-3,SMILESS:[Cu]C1=C(C)C=C(C)C=C1C ).Category: iodides-buliding-blocks. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:75732-01-3) through the article.

The synthesis and characterization (including x-ray crystallog.) of two novel tetranuclear and thermally-stable Li arylcuprates, [Cu2Li2Mes4] and [Cu3LiMes4], are reported. [Cu3LiMes4] is a highly active regioselective promoter for the 1,4-addition of organolithiums to enones (e.g. ≤96% conversion of cyclohex-2-enone to 3-butylcyclohexanone). DFT studies of 3 isomeric forms of [Cu2Li2Mes4] are reported.

If you want to learn more about this compound(Mesitylcopper(I))Category: iodides-buliding-blocks, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(75732-01-3).

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: (2S)-(+)-3-Chloropropane-1,2-diol, is researched, Molecular C3H7ClO2, CAS is 60827-45-4, about Solid state properties and effective resolution procedure for guaifenesin, 3-(2-methoxyphenoxy)-1,2-propanediol, the main research direction is guaifenesin enantiomer resolution.HPLC of Formula: 60827-45-4.

Racemic expectorant guaifenesin, 3-(2-methoxyphenoxy)-1,2-propanediol (2) undergoes spontaneous resolution upon crystallization This fact is confirmed by thermal anal. (single eutectic V-shape binary melting phase diagram, adequate entropy and free energy characteristics). Racemic 2 could be effectively resolved into (S)- and (R)-2 by a preferential crystallization procedure. Single enantiomer drugs levomoprolol and levotensin were obtained by starting from enantiomeric 2 through the sulfite route.

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Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Mesitylcopper(I), is researched, Molecular C9H11Cu, CAS is 75732-01-3, about Soluble Zintl Phases A14ZnGe16 (A = K, Rb) Featuring [(η3-Ge4)Zn(η2-Ge4)]6- and [Ge4]4- Clusters and the Isolation of [(MesCu)2(η3,η3-Ge4)]4-: The Missing Link in the Solution Chemistry of Tetrahedral Group 14 Element Zintl Clusters, the main research direction is zinc germanium potassium rubidium Zintl preparation electronic structure; crystal structure zinc potassium rubidium germanide Zintl cluster.Application of 75732-01-3.

The number of Zintl phases containing polyhedral clusters of tetrel elements that are accessible for chem. reactions of the main-group element clusters is rather limited. The synthesis and structural characterization of two novel ternary intermetallic phases A14ZnGe16 (A = K, Rb) are presented, and their chem. reactivity was studied. The compounds can be rationalized as Zintl phases with 14 alkali metal cations A+ (A = K, Rb), two tetrahedral [Ge4]4- Zintl anions, and one anionic heterometallic [(Ge4)Zn(Ge4)]6- cluster per formula unit. The Zn-Ge cluster comprises two (Ge4) tetrahedra linked by a Zn atom, with one (Ge4) tetrahedron coordinating with a triangular face (η3) and the other one with an edge (η2). [(η3-Ge4)Zn(η2-Ge4)]6- is a new isomer of the [(Ge4)Zn(Ge4)]6- anion in Cs6ZnGe8. The phases dissolve in liquid NH3 and thus represent rare examples of soluble Zintl compounds with deltahedral units of Group 14 element atoms. Compounds with tetrahedral [E4]4- species were previously isolated from solution for E = Si, Sn, and Pb, and the current study provides the missing link for E = Ge. Reaction of an NH3 solution of K14ZnGe16 with MesCu (Mes = 2,4,6-Me3C6H2) in the presence of [18]-crown-6 (1,4,7,10,13,16-hexaoxacyclooctadecane) yielded crystals of [K([18]-crown-6)]2K2[(MesCu)2Ge4](NH3)7.5 with the polyanion [(MesCu)2Ge4]4-. This MesCu-stabilized tetrahedral [Ge4]4- cluster also completes [(MesCu)2Si4-xGex]4- clusters, which were previously isolated from solution for x = 0 and 0.7, as the end member with x = 4. The electronic structures of [(Ge4)Zn(Ge4)]6- and [(MesCu)2Ge4]4- were studied in terms of a MO description and analyses of the electron localization functions. The results are compared with band structure calculations for the A14ZnGe16 phases (A = K, Rb).

If you want to learn more about this compound(Mesitylcopper(I))Application of 75732-01-3, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(75732-01-3).

Reference:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com