MCNAB, HAMISH;MONAHAN, LILIAN C., J. CHEM. SOC. PERKIN TRANS.,(1988) N 4, 863-868
作者:MCNAB, HAMISH、MONAHAN, LILIAN C.
DOI:——
日期:——
3-Hydroxypyrroles and 1H-pyrrol-3(2H)-ones. Part 2. Scope and limitations of the synthesis of pyrrol-3-ones by pyrolysis of aminomethylene Meldrum's acid derivatives
作者:Hamish McNab、Lilian C. Monahan
DOI:10.1039/p19880000863
日期:——
Flash vacuum pyrolysis of N,N-disubstituted aminomethylene Meldrum's acid derivatives provides a route to 4,5-unsubstituted 1H-pyrrol-3(2H)-ones by a hydrogen-transfer–cyclisation sequence. Alkyl and aryl 1-substituted, 1,2-disubstituted, and 1,2,2-trisubstituted pyrrolones can be obtained. In competitive cases, there is little selectivity between hydrogen transfer from primary, secondary, or tertiary