Highly enantioselective copper(<scp>i</scp>)-catalyzed conjugate addition of 1,3-diynes to α,β-unsaturated trifluoromethyl ketones
作者:Amparo Sanz-Marco、Gonzalo Blay、M. Carmen Muñoz、José R. Pedro
DOI:10.1039/c5cc01676b
日期:——
The conjugate diynylation of [small alpha],[small beta]-unsaturated trifluoromethyl ketones is carried out in the presence of a low catalytic load (2.5 mol %) of a copper(I)-MeOBIPHEP complex, triethylamine and a terminal 1,3-diyne....
申请人:CHANGWON NATIONAL UNIVERSITY Industry Academy Cooperation Corps 창원대학교 산학협력단(220040023050) BRN ▼609-82-09745
公开号:KR20200098876A
公开(公告)日:2020-08-21
본 발명은 하기 화학식 1로 표시되는 스티렌 화합물을 하기 화학식 2로 표시되는 카르복시산 무수물과 반응시켜 하기 화학식 3으로 표시되는 α,β-불포화 케톤 화합물을 합성하는 단계를 포함하는 α,β-불포화 케톤 화합물의 제조방법에 대한 것이다: [화학식 1] (상기 화학식에서 R 및 R는 서로 독립적으로 치환 또는 비치환된 알킬, 치환 또는 비치환된 알콕시 또는 치환 또는 비치환된 헤테로알킬임), [화학식 2] (상기 화학식에서 A는 F, Cl, 또는 F 및 Cl이고, n은 1 내지 10임), [화학식 3] .
Synthesis of αβ-Unsaturated Trifluoromethyl Ketones from 4-Dimethylamino-1,1,1-trifluorobut-3-ene-2-one by Addition of Grignard Reagents
作者:Rebecca J. Andrew、John M. Mellor
DOI:10.1016/s0040-4020(00)00597-4
日期:2000.9
such as dimethylamine and they react with Grignard reagents to give αβ-unsaturated trifluoromethyl ketones in good yield by 1,4-addition followed by elimination. The generality of this procedure is contrasted with reactions based either on the use of organolithium nucleophiles, or the use of 4-alkoxy-αβ-unsaturated trifluoromethyl ketones as electrophilic partners.
Enantioselective Alkynylation of Trifluoromethyl Ketones Catalyzed by Cation‐Binding Salen Nickel Complexes
作者:Dongseong Park、Carina I. Jette、Jiyun Kim、Woo‐Ok Jung、Yongmin Lee、Jongwoo Park、Seungyoon Kang、Min Su Han、Brian M. Stoltz、Sukwon Hong
DOI:10.1002/anie.201913057
日期:2020.1.7
Cation-binding salen nickel catalysts were developed for the enantioselective alkynylation of trifluoromethyl ketones in high yield (up to 99 %) and high enantioselectivity (up to 97 % ee). The reaction proceeds with substoichiometric quantities of base (10-20 mol % KOt-Bu) and open to air. In the case of trifluoromethyl vinyl ketones, excellent chemo-selectivity was observed, generating 1,2-addition
Synthesis of trifluoromethyl derivatives of pyrrole. Reaction of , -unsaturated trifluoromethyl ketones with sodium cyanide
作者:V. G. Nenajdenko、S. V. Druzhinin、E. S. Balenkova
DOI:10.1023/b:rucb.0000012372.68456.6f
日期:2003.11
An efficient preparative procedure was developed for the synthesis of 5-hydroxy-5-trifluoromethyl-2-pyrrolidones by the reaction of α,β-unsaturated trifluoromethylketones with sodium cyanide. Dehydration of these reaction products under mild conditions afforded previously unknown 5-trifluoromethyl-3-pyrrolin-2-ones.