Divergent synthesis of 5- and 4-(2,1-azaborine) substituted isoxazoles via regioselective [3 + 2] cycloadditions of nitrile oxides and B-ethynyl-1,2-azaborines

Yong He,Hao Wang,Yao Zhou,Kai Yang,Qiuling Song

Organic chemistry frontiers（2023）

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摘要

A new class of terminal alkyne reagents was developed and applied to the divergent synthesis of 5- and 4-(2,1-azaborine) substituted isoxazoles with excellent regioselectivities.

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关键词

isoxazoles,nitrile oxides,divergent synthesis,b-ethynyl

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