Brönsted Acid Catalyzed Multicomponent Synthesis of Phosphorus and Fluorine-Derived γ-Lactam Derivatives
作者:Xabier del Corte、Adrián López-Francés、Aitor Maestro、Edorta Martinez de Marigorta、Francisco Palacios、Javier Vicario
DOI:10.1021/acs.joc.0c00280
日期:2020.11.20
A Brönsted acid multicomponent reaction between pyruvate derivatives, amines, and aldehydes for the preparation of phosphorus and fluorine substituted γ-lactam derivatives is presented. Depending on the substitution in the resulting 1,5-dihydro-2H-pyrrol-2-one substrates, the reaction provides enol- or enamine-derived γ-lactams. Some enantioselective examples of this reaction are also reported using
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
Synthesis of 2-Trifluoromethyl Quinoline by the Reaction of Fluorinated Imine with Alkyne Catalyzed by Indium(III) Triflate
作者:Yongming Wu、Haibo Xie、Jiangtao Zhu、Zixian Chen、Shan Li
DOI:10.1055/s-0030-1258770
日期:2010.10
Preparation of 2-trifluoromethyl-4-aryl quinolines from a variety of readily available alkynes and N-aryl trifluoroethylimine has been achieved via indium(III) triflate catalyzed Diels―Alder reactions.