Synthesis of 3,5-Disubstituted Isoxazoles via Cope-Type Hydroamination of 1,3-Dialkynes
摘要:
An efficient method for the synthesis of 3,5-disubstituted Isoxazoles is described. The reactions of 1,3-dialkynes with hydroxylamine proceeded smoothly in DMSO under mild reaction conditions to produce 3,5-disubstituted isoxazoles In satisfactory to excellent yields.
CuCl-catalyzed cycloaddition of 1,3-butadiynes with primary amines: an atom-economic process for synthesis of 1,2,5-trisubsituted pyrroles
作者:Qingwei Zheng、Ruimao Hua
DOI:10.1016/j.tetlet.2010.06.092
日期:2010.8
1,3-Butadiynes underwent inter- and intramolecular double hydroamination with primaryamines in the presence of CuCl at 100 °C to afford 1,2,5-trisubsituted pyrroles in good to high yields.