Simple Preparation of Polyhydro-6-aryl(heteroaryl)cycloalka[<i>b</i>][1,5]naphthyridines
作者:Axel Couture、Eric Deniau、Pierre Grandclaudon、Cristian Simion
DOI:10.1055/s-1993-26030
日期:——
A variety of polyhydro-6-aryl- and heteroarylcycloalka[b][1,5] naphthyridines have been efficiently prepared by thermally induced ring contraction of pyrido[2,3-b][1,5]thiazepines obtained by reacting lithiated 2-chloro-N-cycloalkylidene-3-pyridinimines with suitable O-ethyl thiocarboxylates.
各种多氢-6-芳基-和杂芳基环烷[b][1,5]萘啶已通过热诱导环收缩有效地制备了通过锂化2-反应获得的吡啶并[2,3-b][1,5]硫氮杂卓类化合物。氯-N-亚环烷基-3-吡啶亚胺与合适的O-硫代羧酸乙酯。