Synthesis of various cyclopropyl methyl bromide and its derivatives from ketones and/or aldehydes and some β-dicarbonyl compounds in the presence of BrCN and Et3N
作者:Saeed Gholizadeh、Kazem D. Safa、Nader Noroozi Pesyan
DOI:10.1007/s13738-019-01600-x
日期:2019.6
aldehydes with ethyl cyanoacetate or malononitrile and cyanogen bromide (BrCN) in the presence of Et3N to give products in excellent yields within about 3 s. All structures were characterized by IR, 1H-NMR, 13C-NMR, and Mass spectroscopy techniques. The reaction mechanism was discussed.
Synthesis of trifluoromethyl-/cyclopropyl-substituted 2-isoxazolines by DBU-promoted domino reaction
作者:Xiao-Dong Liu、Hai-Yan Ma、Chun-Hui Xing、Long Lu
DOI:10.1016/j.cclet.2017.03.031
日期:2017.8
cyclopropyl substituted 2-isoxazolines were synthesized via a DBU-promoted domino reaction of β-trifluoromethyl-/β-cyclopropyl-substituted enones with hydroxylamine. The domino reaction consists of a Michael addition and the followed cyclization. A wide range of 3-substituted 5-cyclopropyl-5- trifluoromethyl-2-isoxazolines were obtained in good to excellent yields under mild reaction conditions. The method
[EN] COLONY STIMULATING FACTOR-1 RECEPTOR (CSF-1R) INHIBITORS<br/>[FR] INHIBITEURS DU RÉCEPTEUR DE FACTEUR-1 DE STIMULATION DE COLONIES (CSF-1R)
申请人:GENZYME CORP
公开号:WO2017015267A1
公开(公告)日:2017-01-26
Compounds of the formulas I and XIII, which are useful as colony stimulating factor-1 receptor inhibitors ("CSF 1R inhibitors").
I和XIII式化合物,可用作促细胞增殖因子-1受体抑制剂("CSF 1R抑制剂")。
Fast oxidation of secondary alcohols by the bromate-bromide system using cyclic microwave heating in acidic water
作者:Sanna Pääkkönen、Jouni Pursiainen、Marja Lajunen
DOI:10.1016/j.tetlet.2010.10.009
日期:2010.12
We report an improved, gentle, cyclic microwave activation technique for the oxidation of secondaryalcohols using nonhazardous hypobromous acid (BrOH) as the reagent in acidic water. Several aliphatic and aromatic secondaryalcohols were successfully oxidized to the corresponding ketones using this technique in high yields and with only minor amounts of side products.
High-Pressure Accelerated Asymmetric Organocatalytic Friedel–Crafts Alkylation of Indoles with Enones: Application to Quaternary Stereogenic Centers Construction
organocatalytic Friedel–Craftsalkylation of indoles with α,β-unsaturated ketones was found to be efficiently accelerated under high-pressure conditions with a low loading of chiral primary amine salts with good yield and enantioselectivity up to 90%. This approach also allows, for the first time, selected indole derivatives containing quaternary stereogenic centers to be obtained from prochiral β,β-disubstituted