Reaction of enamines with trifluoromethyl containing carbonyl reagents
作者:Dmitriy A. Sibgatulin、Tatyana E. Shubina、Aleksandr N. Kostyuk、Dmitriy M. Volochnyuk、Reinhard Schmutzler、Peter G. Jones、Aleksandr M. Pinchuk
DOI:10.1016/j.jfluchem.2009.10.014
日期:2010.2
The reaction of linear push–pull enamines bearing a methyl group at the α-position with a set of trifluoromethylated carbonyl compounds was investigated. It has been found that the reaction proceeds at the methyl group of the enamines. The first computational study of the reaction between push–pull enamines and strong electrophilic reagents was reported. Out of three pathways considered DFT and MP2
3-benzothiazole reacts with anilines to form the corresponding trifluoromethyl-substituted alcohols. The reaction regioselectivity (ortho/para) was shown to depend strongly on the structure of the aniline. meta-Substituted anilines tend to form the corresponding ortho-substituted products, in contrary to the previous literature data. anilines- Friedel-Crafts alkylation-ortho/para-substitution - trifluoromethyl
Brønsted Acid-Catalyzed Asymmetric Friedel–Crafts Alkylation of Indoles with Benzothiazole-Bearing Trifluoromethyl Ketone Hydrates
作者:Wei Wang、Wenhui Xiong、Jinping Wang、Qiu-An Wang、Wen Yang
DOI:10.1021/acs.joc.0c00116
日期:2020.3.20
An efficient Brønsted acid-catalyzed asymmetricFriedel-Crafts alkylation of indoles with benzothiazole-bearing trifluoromethyl ketone hydrates as electrophiles has been developed. The mild organocatalytic reactions proceeded well with lowcatalystloading to afford a range of enantioenriched α-trifluoromethyl tertiary alcohols containing both benzothiazole and indole rings with excellent yields and
2-(Trifluoroacetyl)-1,3-azoles readily react with methyl acrylate and acrylonitrile under Baylis-Hillman reaction conditions to afford heterocyclic trifluoromethyl-containing allylic alcohols in 36-97% yields. The thus obtained Baylis-Hillman adducts readily undergo Michael addition reactions with various nucleophiles.