Category: bromides-buliding-blocks

Wolff, Oliver; Waldvogel, Siegfried R. published the artcile< 3-substituted phthalic acid derivatives by Sonogashira coupling reaction>, Computed Properties of 82-73-5, the main research area is phthalic acid substituted preparation Sonogashira coupling reaction.

Phthalic acid derivatives with carbon substituents in position 3 are easily accessible by Sonogashira coupling reaction of the corresponding bromo derivative For reasonable conversions the phthaloyl moiety is masked as the N-phenylphthalimide, which can smoothly be converted into other phthalic acid derivatives For example, stirring 3-bromo-N-phenylphthalimide with oct-1-yne in DMF in the presence of Et3N, CuI, and bis(triphenylphosphine)palladium dichloride at 80° for 16 h gave 91% 3-(oct-1-ynyl)-N-phthalimide.

Synthesis published new progress about Alkynes Role: RCT (Reactant), RACT (Reactant or Reagent). 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, Computed Properties of 82-73-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Li, Ya-Wei; Zheng, Hong-Xing; Yang, Bo; Shan, Xiang-Huan; Qu, Jian-Ping; Kang, Yan-Biao published the artcile< tBuOK-Promoted Cyclization of Imines with Aryl Halides>, COA of Formula: C7H4Br2O2, the main research area is imine aryl halide aminyl radical potassium tert butoxide cyclization; indole preparation.

A transition-metal-free indole synthesis using radical coupling of 2-halotoluenes and imines via the later-stage C-N bond construction was reported for the first time. It includes an aminyl radical generation by C-H cleaving addition of 2-halotoluenes to imines via the carbanion radical relay and an intramol. coupling of aryl halides with aminyl radicals. One standard condition can be used for all halides including F, Cl, Br, and I. No extra oxidant or transition metal is required.

Organic Letters published new progress about Aryl halides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 603-78-1 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4Br2O2, COA of Formula: C7H4Br2O2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Huang, Wenyi; Shrestha, Mohini; Wang, Chenchen; Fang, Ke; Teng, Yaxin; Qu, Jingping; Chen, Yifeng published the artcile< Asymmetric synthesis of 3-benzyl and allyl isoindolinones by Pd-catalyzed dicarbofunctionalization of 1,1-disubstituted enamides>, Application of C7H4BrNO4, the main research area is disubstituted isoindolinone enantioselective preparation; boronic acid disubstituted enamide tandem Heck Suzuki palladium catalyst.

A palladium-catalyzed asym. synthesis of 3,3-disubstituted isoindolinones I [R = (E)-n-BuCH=CH, 3-thienyl, PMB, etc.; R1 = Bn, (CH2)2Ph, PMB; R2 = Me, iPr; R3 = H, 6-Cl, 5-NO2; etc.] via tandem Heck/Suzuki coupling of 1,1-disubstituted enamides with aryl/alkenyl boronic acids under mild reaction conditions was reported. This reaction exhibited both broad functional group tolerance and high enantioselectivity. The first dicarbo-functionalization of 1,1-disubstituted enamides to generate amide derivatives bearing quaternary stereocenters was reported. Finally, synthetic utility of this protocol was demonstrated by expedient synthesis of PI3K-delta inhibitor precursor.

Organic Chemistry Frontiers published new progress about Amides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation) (enamides). 16426-64-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrNO4, Application of C7H4BrNO4.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Mitrea, Daiana G.; Circu, Viorel published the artcile< Synthesis and characterization of novel acylthiourea compounds used in ions recognition and sensing in organic media>, Reference of 3959-07-7, the main research area is synthesis characterization acylthiourea ion recognition colorimetric sensing; Acyl thiourea; Anion recognition; Cation recognition; Colorimetric sensors; Copper (II) detection; Fluoride detection; Organic media.

A series of novel N-acyl-N’-aryl thiourea derivatives were designed and prepared with the aim to develop dual responsive receptors for anions and cations. The structure of the new products was confirmed by NMR spectroscopy (13C and 1H), elemental anal., and IR spectroscopy. Their thermal stability was studied by thermogravimetric anal. (TG) and it was found that these acyl thiourea derivatives are stable up to 160°C. The ion recognition and sensing properties of the acyl thiourea compounds were investigated by UV-VIS absorption spectroscopy in organic media upon the addition of various salts. The UV-VIS studies revealed that these acyl thiourea derivatives are able to sense biol. important ions such as fluoride and copper (II) ions.

Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy published new progress about Colorimetric sensors. 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Reference of 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Shintani, Ryo; Otomo, Haruka; Ota, Kensuke; Hayashi, Tamio published the artcile< Palladium-Catalyzed Asymmetric Synthesis of Silicon-Stereogenic Dibenzosiloles via Enantioselective C-H Bond Functionalization>, HPLC of Formula: 135999-16-5, the main research area is palladium catalyzed asym carbon hydrogen bond activation silylaryl triflate; dibenzosilole silicon stereogenic preparation; crystal structure dibenzosilole silicon stereogenic; mol structure dibenzosilole silicon stereogenic.

A Pd-catalyzed asym. synthesis of Si-stereogenic dibenzosiloles, e.g., 4-methoxy-5-tert-butyl-5-phenyl-5H-dibenzosilole, is developed through enantioselective C-H bond functionalization of prochiral 2-(arylsilyl)aryl triflates. High chemo- and enantioselectivities are achieved by employing a Josiphos-type ligand under mild conditions.

Journal of the American Chemical Society published new progress about Bidentate ligands Role: CAT (Catalyst Use), USES (Uses). 135999-16-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H7BrO2, HPLC of Formula: 135999-16-5.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Osyanin, V. A.; Korzhenko, K. S.; Rashchepkina, D. A.; Osipov, D. V.; Klimochkin, Yu. N. published the artcile< Nucleophilic Vinylic Substitution in Perfluoroacylchromenes. Diastereoselective Synthesis of Push-Pull Enamino Ketones>, Related Products of 3959-07-7, the main research area is enamino ketone diastereoselective preparation; perfluoroacylchromene nucleophilic vinylic substitution.

The reactions of 2-perfluoroacyl-1H-benzo[f]chromenes and 6,7-dimethyl-3-trifluoroacetyl-4H-chromene with primary aliphatic amines and ammonia afforded a series of enamino ketones containing a (2-hydroxynaphthalen-1-yl)methyl or 2-hydroxybenzyl substituent in the α-position with respect to the carbonyl group, e.g., I [R = H, cyclopropyl, Bn, etc.; X = CF3, C2F5, ]. These reactions involved opening of the pyran ring, which followed aza-Michael addition as the initial step. The obtained enamino ketones were found to exist in DMSO solution as single E isomers.

Russian Journal of Organic Chemistry published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 3959-07-7 belongs to class bromides-buliding-blocks, and the molecular formula is C7H8BrN, Related Products of 3959-07-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Xu, Ming-Hui; Tu, Yong-Qiang; Tian, Jin-Miao; Zhang, Fu-Min; Wang, Shao-Hua; Zhang, Shi-Heng; Zhang, Xiao-Ming published the artcile< Asymmetric epoxidation of α,β-unsaturated aldehydes catalyzed by a spiro-pyrrolidine-derived organocatalyst>, COA of Formula: C9H7BrO, the main research area is epoxide preparation diastereoselective enantioselective; aldehyde unsaturated asym epoxidation spiro pyrrolidine organocatalyst.

The asym. epoxidation of α,β-unsaturated aldehydes R1R2C=CHCHO [R1 = CH3CH2, 4-ClC6H4, naphthalen-2-yl, etc.; R2 = H, CH3; R1R2 = -(CH2)4-], catalyzed by a spiro-pyrrolidine (SPD)-derived organocatalyst, has been accomplished with good diastereoselectivities (up to dr >20:1) and with high to excellent enantioselectivities (up to 99% ee).

Tetrahedron: Asymmetry published new progress about Alcohols, epoxy Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 3893-18-3 belongs to class bromides-buliding-blocks, and the molecular formula is C9H7BrO, COA of Formula: C9H7BrO.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Xu, Jitao; Li, Zhilong; Xu, Yumin; Shu, Xiaomin; Huo, Haohua published the artcile< Stereodivergent Synthesis of Both Z- and E-Alkenes by Photoinduced, Ni-Catalyzed Enantioselective C(sp3)-H Alkenylation>, Name: 1-Bromo-3-ethylbenzene, the main research area is alkylarene vinyl bromide nickel catalyst photoredox enantioselective diastereoselective alkenylation; aryl alkyl alkene preparation.

An enantioselective benzylic C(sp3)-H alkenylation of simple alkylarenes with vinyl bromides via photoinduced nickel catalysis was reported, which allowed the stereodivergent synthesis of both enantioenriched Z- and E-alkenes bearing aryl-substituted, allylic tertiary stereogenic centers. Interestingly, the tunable Z/E-selectivity was achieved by energy transfer catalysis via a judicious choice of the photocatalyst counteranion. This versatile strategy featured simple starting materials, mild reaction conditions, broad substrate scope, divergent Z- and E-selectivity and high enantioselectivities. Moreover, a formal asym. benzylic C(sp3)-H alkylation was also be achieved via a one-pot alkenylation/reduction sequence, providing a complementary strategy to address the notoriously challenging stereochem. control in C(sp3)-C(sp3) bond construction.

ACS Catalysis published new progress about Alkenes Role: PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 2725-82-8 belongs to class bromides-buliding-blocks, and the molecular formula is C8H9Br, Name: 1-Bromo-3-ethylbenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Krishanmoorthy, Sankarganesh; Schnell, Simon D.; Dang, Huong; Fu, Fang; Prakash, G. K. Surya published the artcile< Fluorodecarboxylation: Synthesis of aryl trifluoromethyl ethers (ArOCF3) and thioethers (ArSCF3)>, Reference of 2252-45-1, the main research area is aryl trifluoromethyl ether preparation; aryloxydifluoroacetic acid selectfluor fluorodecarboxylation; aryltrifluoromethyl thioether preparation; arylmercaptodifluoroacetic acid selectfluor fluorodecarboxylation.

Fluorodecarboxylation of aryloxydifluoroacetic acid (ArOCF2CO2H) [Ar = C6H5, 4-(CH3)3CC6H4, naphthalen-1-yl, etc.] and arylmercaptodifluoroacetic acid (RSCF2CO2H) [R = C6H5, 4-ClC6H4, 3,5-(CF3)2C6H3, etc.] towards RSCF3 and ArOCF3 using silver (I) salts in the presence of Selectfluor in a biphasic system with trifluoroacetic acid additive is discussed.

Journal of Fluorine Chemistry published new progress about Aromatic carboxylic acids Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 2252-45-1 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrF3S, Reference of 2252-45-1.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Boykin, David W.; Baumstark, Alfons L.; Kayser, Margaret M.; Soucy, Chantal M. published the artcile< Oxygen-17 nuclear magnetic resonance spectroscopic study of substituted phthalic anhydrides and phthalides>, Safety of 4-Bromoisobenzofuran-1,3-dione, the main research area is NMR oxygen phthalic anhydride phthalide.

17O chem. shift data (natural abundance) for 3-substituted phthalic anhydrides and 4- and 7-substituted phthalides in acetonitrile at 75° are reported. Steric interactions of substituents ortho to the carbonyl groups result in deshielding effects (9-22 ppm) relative to parent compounds regardless of the electronic character of the substituents. Factors contributing to the deshielding effects are discussed. The relationship between 17O chem. shifts and regiochem. of the phthalic anhydrides is discussed.

Canadian Journal of Chemistry published new progress about NMR (nuclear magnetic resonance). 82-73-5 belongs to class bromides-buliding-blocks, and the molecular formula is C8H3BrO3, Safety of 4-Bromoisobenzofuran-1,3-dione.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary