Epoxides can be opened under neutral conditions with TMSN3 and TMSCN in the presence of catalytic amounts of Lewis acid, affording the corresponding ring-opened compounds in high yields.
Synthesis of functionalized cyclic imines by addition of Grignard reagents to ω-bromonitriles and γ,δ-unsaturated nitriles
作者:Douglas F. Fry、Matthew Brown、J. Cooper McDonald、R. Karl Dieter
DOI:10.1016/0040-4039(96)01344-5
日期:1996.8
Trimethylsilyloxy ω-bromonitriles and trimethylsilyloxy-γ,δ-unsaturated nitriles give clean 1,2-addition products with Grignard reagents that can be induced to undergo subsequent cyclization either directly or by addition of N-bromosuccinimide, respectively.