New radical mediated polyolefin cyclisations directed towards steroid ring synthesis
作者:Ligong Chen、G.Bryon Gill、Gerald Pattenden
DOI:10.1016/s0040-4039(00)77180-2
日期:1994.4
Bu3SnHAIBN is shown to lead to linear and angular six-ring fused polycycles, viz2, 11 and 15 respectively, via consecutive 6-endo-trig modes of cyclisations starting from the corresponding polyolefin acyl radical intermediates.
结果表明,用Bu 3 SnH = AIBN处理适当取代的5,9-二烯,5,9,13-三烯和5,9,13,17-四烯苯硒酸酯(例如1a,9和14)会导致线性和线性角六环稠合的多环,即2,11和15分别通过连续6-内从相应的聚烯烃酰基中间体开始环化的-trig模式。