A Very Simple Route to Benzonaphtho[1,5]Diazocines Using Vilsmeier Reagents via the ‘t-Amino Effect’
作者:Ying Cheng、Hai-Bo Yang、Bo Liu、Otto Meth-Cohn、David Watkin、Stephen Humphries
DOI:10.1055/s-2002-28513
日期:——
The novel fused heterocyclic systems 7,8,13,14-tetrahydrobenzo[b]naphtho[1,2-f][1,5]diazocine and 7,8,13,14-tetrahydrobenzo[b]naphtho[2,1-f][1,5]diazocine were prepared in moderate yields in a one step reaction by Vilsmeier formylation of 1-dimethyl-aminonaphthalene or 2-dimethylaminonaphthalene, respectively, by way of the ‘t-amino effect’. Novel rearranged by-products were formed from 2-dimethylaminonaphthalene.
新颖的杂环系统7,8,13,14-四氢苯并[b]萘[1,2-f][1,5]二氮杂烯和7,8,13,14-四氢苯并[b]萘[2,1-f][1,5]二氮杂烯通过Vilsmeier甲酰化反应,分别以适中的产率在一步反应中由1-二甲氨基萘或2-二甲氨基萘制备而成,利用了“t-氨基效应”。从2-二甲氨基萘中形成了新颖的重排副产物。