METH-COHN O.; RHOUATI S.; TARNOWSKI B.; ROBINSON A., J. CHEM. SOC. PERKIN TRANS., PART 1, 1981, NO 5, 1537-1543
作者:METH-COHN O.、 RHOUATI S.、 TARNOWSKI B.、 ROBINSON A.
DOI:——
日期:——
A versatile new synthesis of quinolines and related fused pyridines. Part 8. Conversion of anilides into 3-substituted quinolines and into quinoxalines
3-substituted quinolines (7). When N-nitrosodialkylamines are used in place of dimethylformamide as the Vilsmeier agent, the anilides are converted into 2-chloroquinoxalines in low yields. Several by-products are formed and the mechanisms have been explored. Thus, the formation of ethyl N-arylcabamate from the corresponding propionanilide is shown to involve an C→O alkyl migration related to a Wolff rearrangement