Synthesis of 2‐Phosphoryl‐3‐Monofluorovinylindoles under Catalyst‐ and Additive‐Free Conditions
摘要:
AbstractA synthetic approach for the synthesis 2‐phosphoryl‐3‐monofluorovinylindoles via cascade regioselective dehydrative phosphorylation/stereoselective defluorination of difluoromethylated 3‐indolylmethanols and H‐phosphine oxides under catalyst‐ and additive‐free conditions is described. The reaction could be scaled‐up without the need for column chromatography purification.magnified image
Synthesis of 2‐Phosphoryl‐3‐Monofluorovinylindoles under Catalyst‐ and Additive‐Free Conditions
摘要:
AbstractA synthetic approach for the synthesis 2‐phosphoryl‐3‐monofluorovinylindoles via cascade regioselective dehydrative phosphorylation/stereoselective defluorination of difluoromethylated 3‐indolylmethanols and H‐phosphine oxides under catalyst‐ and additive‐free conditions is described. The reaction could be scaled‐up without the need for column chromatography purification.magnified image
Ga(OTf)<sub>3</sub>-Catalyzed Temperature-Controlled Regioselective Friedel–Crafts Alkylation of Trifluoromethylated 3-Indolylmethanols with 2-Substituted Indoles: Divergent Synthesis of Trifluoromethylated Unsymmetrical 3,3′-and 3,6′-Bis(indolyl)methanes
作者:Yuan Ling、Di An、Yuanyuan Zhou、Weidong Rao
DOI:10.1021/acs.orglett.9b01135
日期:2019.5.3
temperature-controlled regiodivergent alkylation of 2-substituted indoles with trifluoromethylated 3-indolylmethanols is described that provides structurally diverse unsymmetrical 3,3′- and 3,6′-bis(indolyl)methanes with a CF3-containing quaternary carbon center in good to excellent yields under mild conditions. In addition, this present protocol could be successfully extended to the synthesis of difluoromethylated
Efficient Guanidine-Catalyzed Alkylation of Indoles with Fluoromethyl Ketones in the presence of Water
作者:Marco Bandini、Riccardo Sinisi
DOI:10.1021/ol9005079
日期:2009.5.21
A simple and efficient guanidine-catalyzed methodology for the direct preparation of trifluoromethyl-indolyl-phenylethanols in the presence of water is reported. This synthetically viable class of compounds is obtained in excellent yields (up to 98%) through Friedel-Crafts-type alkylation of indoles with aromatic fluoromethyl ketones. Exceptional reaction scope of indoles and alkylating agents is described.