Cyclic amidines. Part XXIV. Cyclisation of N-allyl-N′-arylacetamidines to imidazolines, dihydroquinazolines, and dihydrobenzodiazepines
作者:Maurice W. Partridge、Alan Smith
DOI:10.1039/p19730000453
日期:——
N-Allyl-N′-arylacetamidines have been cyclised, as their hydrochlorides, to 1-aryl-2,5-dimethyl-Δ2-imidazolines and, in polyphosphoric acid, to 3,4-dihydro-4-ethyl-2-methylquinazolines together with, in certain cases, 4,5-dihydro-2,5-dimethyl-3H-1,3-benzodiazepines.
Ñ -Allyl- N' -arylacetamidines已环化,因为它们的盐酸盐,1-芳基- 2,5-二甲基- Δ 2个-imidazolines和,在多磷酸中,以3,4-二氢-4-乙基-2-甲基喹唑啉,在某些情况下,还包括4,5-二氢-2,5-二甲基-3 H -1,3-苯并二氮杂s。