The C-unsubstituted fully unsaturated Group 15 (P, As, Sb and Bi) 1-benzoheteroepines 6, dibenzo[b,d]heteroepines 8 and dibenzo[b,f] heteroepines 10 have been prepared from the dibromo compounds 3, 7 and 9 having a 1,6-dibromohexatriene system, and their thermal stabilities have been examined.
未经碳原子取代的全不饱和15族(
磷、
砷、
锑和
铋)1-苯并杂环烯6、二苯并[b,d]杂环烯8和二苯并[b,f]杂环烯10已由具有1,6-二
溴己
三烯系统的二
溴化合物3、7和9制备得到,并考察了它们的热稳定性。