Unexpected Rearrangement Leading to Formation of a 1,3-Bis(triphenylphosphonio)prop-1-en-3-idyl Carboxylate
作者:R. Alan Aitken、Lee P. Cleghorn、Rebecca M. Leitch、Louis C. Morrill、Alexandra M. Z. Slawin
DOI:10.1002/ejoc.201000143
日期:2010.6
dichloride reacts with methylenetriphenylphosphorane to give the expected bis(acylylide) 1, the same reaction of biphenyl-2,2′-dicarbonyl dichloride results in a multistep rearrangement leading to the zwitterionic 2-[1,3-bis(triphenylphosphonio)prop-1-en-3-id-2-yl]biphenyl-2′-carboxylate 2. X-ray crystal structures of both 1 and 2 are reported.
联苯-4,4'-二羰基二氯化物与亚甲基三苯基膦反应生成预期的双(酰基化物)1,而联苯-2,2'-二羰基二氯化物的相同反应导致多步重排,导致两性离子 2-[1, 3-bis(triphenylphosphonio)prop-1-en-3-id-2-yl]biphenyl-2'-carboxylate 2. 报道了 1 和 2 的 X 射线晶体结构。