Gas-phase domino cyclization of phosphonium ylides leading to the total synthesis of Eustifoline D
作者:R. Alan Aitken、Lorna Murray
DOI:10.1016/j.tetlet.2017.09.073
日期:2017.11
Six stabilised phosphoniumylides bearing ortho-benzylaminophenyl and cinnamoyl (or a heterocyclic analogue) groups have been prepared and upon flash vacuum pyrolysis at 800 °C were found to undergo cascade cyclization processes to give mainly 3-styrylquinolines but also in some cases ring-fused carbazoles and other fused-ring heterocyclic products. By starting with an appropriate ring-methylated precursor