The surprising nucleophilic addition of aminochlorocarbenes to diethyl acetylenedicarboxylate and to oxalyl chloride: quinolines and benzo[1,4]diazepines from N-alkylformanilides and oxalyl chloride in the presence of Hünig's base
作者:Ying Cheng、Hua Yang、Otto Meth-Cohn
DOI:10.1039/b307278a
日期:——
xylene, the derived nucleophilic arylaminochlorocarbenes bearing 4-methyl- and 4-methoxy-substituents react with acetylenedicarboxylates to give 2-(2-chloro-1,2-bis(ethoxycarbonyl)vinyl)-3,4-bis(ethoxycarbonyl)-1-methyl-1,2-dihydroquinolines while most derivatives react with oxalyl chloride to give substituted 1-methyl-4 phenylbenzo[f][1,4]diazepine-2,3-dicarboxylic anhydrides.
Synthetic Applications of Aminochlorocarbenes: A Two-step Conversion of<i>N</i>-Methylformanilides into 3-Arylamino-2-chloroindoles
作者:Ying Cheng、Otto Meth-Cohn、Yu-Hua Zhan、Hai-Xia Guan、Hua Yang
DOI:10.1055/s-2002-35228
日期:——
The thermal cyclisation of 1,2-diarylamino-1,2-dichloroethenes (dimers of arylaminochlorocarbenes) in DMF affords 3-arylamino-2-chloroindoles in good yields (70-91%).