3-(Trifluoromethyl)prop-2-yne 1-iminium triflate salts were generated from 3-trifloxy-3-(trifluoromethyl)prop-2-ene 1-iminium salts by triethylamine-assisted elimination of triflic acid and trapped in situ in various cycloaddition reactions.
Organocatalytic Enamide–Azide Cycloaddition Reactions: Regiospecific Synthesis of 1,4,5‐Trisubstituted‐1,2,3‐Triazoles
作者:Lee Jin Tu Danence、Yaojun Gao、Maoguo Li、Yuan Huang、Jian Wang
DOI:10.1002/chem.201002775
日期:2011.3.21
Heterocycles in one click: A novel organocatalytic enamide–azide cycloadditionreaction has been developed. This synthetic procedure represents a new method for the efficient construction of 1,4,5‐trisubstituted‐1,2,3‐triazoles under mild reaction conditions. Most significantly, the investigated process is highly regiospecific (see scheme).