Tributyltin chloride-sodium cyanoborohydride mediated tandem radical cyclisation-reductive demethoxylation sequence
作者:A Srikrishna、R Viswajanani、C.V Yelamaggad
DOI:10.1016/s0040-4020(97)00658-3
日期:1997.7
the bromoketals 3, 7a-g and 11 with tri-n-butyltin chloride and sodium cyanoborohydride in the presence of a catalytic amount of AIBN furnished the ethers 5, 8a-g and 13 via a tandem sequence comprising of a radical cyclisation reaction and tri-n-butylhalostannane and sodium cyanoborohydride mediated reductive demethoxylation of the resulting cyclic ketals.
所述bromoketals的反应3,图7a-克和11用三正丁基锡氯化物和氰基硼氢化钠在AIBN催化量的存在提供的醚5,图8A-G和13经由串联序列,其包含自由基环化反应的以及三正丁基卤烷烃和氰基硼氢化钠介导的环状缩酮的还原性脱甲氧基化。