Synthesis of expanded planar dehydrobenzoannulenes: Weakly diatropic, weakly paratropic, or atropic?
作者:W.Brad Wan、David B. Kimball、Michael M. Haley
DOI:10.1016/s0040-4039(98)01583-4
日期:1998.9
Use of a Cu/Pd cross-coupling strategy has led to the synthesis of the first dehydrobenzoannulenes containing triacetylenic linkages. NMR studies of these macrocycles and comparison with other known systems indicate that, in spite of their large size and extensive benzannelation, dehydrobenzoannulenes possess weak induced ring currents. (C) 1998 Elsevier Science Ltd. All rights reserved.