Regioselective Synthesis of Either 1H- or 2H-1,2,3-Triazoles via Michael Addition to a,b-Unsaturated Ketones
摘要:
The Michael reaction of NH-1,2,3-triazole (1) with α,β-unsaturated ketones was studied. 1H-1,2,3-triazolyl-ketones were selectively generated when 1 was combined neat with a variety of enones. The use of aprotic solvents with catalytic base gave the corresponding 2H-regioisomers. Together, these two protocols provide direct access to either the N1- or N2-substituted 1,3-triazolyl ketone regioisomers.
Regioselective Synthesis of Either 1H- or 2H-1,2,3-Triazoles via Michael Addition to a,b-Unsaturated Ketones
作者:Jason E. Hein、Sen Wai Kwok、Valery V. Fokin、K. Barry Sharpless
DOI:10.3987/com-08-s(n)73
日期:——
The Michael reaction of NH-1,2,3-triazole (1) with α,β-unsaturated ketones was studied. 1H-1,2,3-triazolyl-ketones were selectively generated when 1 was combined neat with a variety of enones. The use of aprotic solvents with catalytic base gave the corresponding 2H-regioisomers. Together, these two protocols provide direct access to either the N1- or N2-substituted 1,3-triazolyl ketone regioisomers.