Synthesis of diatropic highly benzannelated annulenes.
作者:Reginald H Mitchell、Ramanathan Mahadevan
DOI:10.1016/s0040-4039(01)92439-6
日期:1981.1
The first examples of annelated cis-dihydropyrenes, 16, 18, 19, together with a number of highly annelated trans-dihydropyrenes, 2 - 4 and, 17, are described. All are diatropic and indicate that higher annelation does not remove the delocalisation in a macrocyclic ring.
稠合的第一实施例的顺-dihydropyrenes,16,18,19,与多个高度稠合在一起的反式-dihydropyrenes,2 - 4和,17,进行说明。所有这些都是亲核的,表明较高的成环作用并不能消除大环中的离域。