Unusual Reaction of<i>N</i>-Arylimines of Hexafluoroacetone with<i>m</i>-Chloroperoxybenzoic Acid. New Route to 2,2-Bis(trifluoromethyl)benzoxazolidines
作者:Viacheslav A. Petrov、Dipti D. Khasnis
DOI:10.1002/ijch.199900018
日期:——
Reaction of readily available N-arylimines of hexafluoroacetone with anhydrous m-chloroperoxybenzoicacid leads to the formation of substituted 2,2-bis(trifluoromethyl)oxazolidines in 30–70% yield as a result of an oxidative cyclization reaction. This process is general and can be used as a synthetic route to the corresponding polyfluorinated oxazolidines.
The Preparation and Reactions of<i>N</i>-Substituted Hexafluoroisopropylideneimines
作者:Nobuo Ishikawa、Tomoya Kitazume
DOI:10.1246/bcsj.46.3260
日期:1973.10
N-Aryl- and N-alkylhexafluoroisopropylideneimines (2) were prepared from the hexafluorothioacetone dimer (1) by treatment with either aryl- or alkylamines. These imines reacted with alcohols and thiols to give three addition products, 7, 8, and 9. Phenylhydrazone (3), semicarbazone (4), hydrazone (5), and azine (6) of hexafluoroacetone were also obtained directly from 1 and the corresponding carbonyl reagents.
Formylation of Fluoroalkyl Imines through Visible-Light-Enabled H-Atom Transfer Catalysis: Access to Fluorinated α-Amino Aldehydes
作者:Sen Yang、Shuangyu Zhu、Dengfu Lu、Yuefa Gong
DOI:10.1021/acs.orglett.9b00128
日期:2019.4.5
visible-light-enabled catalytic formylation of fluoroalkyl imines is developed. With readily accessible starting materials and organocatalysts, this method provides a general approach to masked fluoroalkyl amino aldehydes. A synergistic catalytic effect between the photosensitizer and the H atom transfer agent was proven pivotal to this transformation. After removing the mask, free aldehydes can be obtained and
bearing the Martin ligand were synthesized by the reaction of the corresponding iminophosphorane and carbonyl compounds and characterized by X-ray crystallographic analysis. Thermolysis of the oxazaphosphetidine gave the cyclic phosphinate and the corresponding imine, indicating that the oxazaphosphetidine is an intermediate of the aza-Wittig reaction.
Chemistry of N-substituted 2,2-difluoro-3,3-bis (trifluoromethyl)aziridines
作者:Viacheslav A. Petrov
DOI:10.1016/s0022-1139(00)00295-5
日期:2000.10
Variety of N-Aryl and N-alkyl-2,2-difluoro-3,3-bis(trifluoromethyl)aziridines are prepared by reaction of the corresponding imines of hexafluoroacetone with difluorocarbene generated by thermolysis of hexafluoropropylene oxide. Results of reaction of N-aryl-2,2-difluoro-3,3-bis(trifluoromethyl)-aziridines with CsF, CF3SO3H, HF and thermal rearrangement are presented.
的各种Ñ -芳基和ñ -烷基-2,2-二氟-3,3-双(三氟甲基)氮丙啶通过与通过六氟环氧丙烷的热分解生成的二氟卡宾六氟丙酮的相应亚胺反应而制备。给出了N-芳基-2,2-二氟-3,3-双(三氟甲基)-氮丙啶与CsF,CF 3 SO 3 H,HF和热重排反应的结果。