Quinazolines and 1,4-benzodiazepines. XCV. Synthesis of 1,4-benzodiazepines by ring expansion of 2-chloromethylquinazolines with carbanions
作者:A. Walser、T. Flynn、C. Mason、R. Ian Fryer
DOI:10.1002/jhet.5570230509
日期:1986.9
1,4-Benzodiazepines bearing a carbon substituent at the 2-position were obtained by reaction of 2-chloromethylquinazoline 3-oxides with stabilized carbanions. The carbanions of alkyl acetates, N,N-disubstituted acetamides, acetonitrile, dimethylsulfone, N,N-dimethyl methanesulfonamide and 2-methylpyridine were successfully applied. The conversion of some of the 2-carbon substituted 1,4-benzodiazepines
通过使2-氯甲基喹唑啉3-氧化物与稳定的碳负离子反应,获得在2-位带有碳取代基的1,4-苯并二氮杂s。成功应用了乙酸烷基酯,N,N-二取代的乙酰胺,乙腈,二甲基砜,N,N-二甲基甲磺酰胺和2-甲基吡啶的碳负离子。一些2-碳取代的1,4-苯并二氮杂卓向咪唑并[1,5- a ] [1,4]苯并二氮杂卓和[1,2,5]恶二嗪[5,4- a ] [1,4 ]的转化描述了]苯并二氮杂s。