Reaction of Polarized KeteneS,N-Acetals with Bromoacetaldehyde Diethyl Acetal: Synthesis of 1-Substituted 3-Acyl- and 3-Nitro-2-methylthiopyrroles and 1,2-Annulated 3-Acylpyrroles
GUPTA, AKHILESH K.;CHAKRASALI, R. T.;HA, H.;JUNJAPPA, H., SYNTHESIS,(1989) N, C. 141-142
作者:GUPTA, AKHILESH K.、CHAKRASALI, R. T.、HA, H.、JUNJAPPA, H.
DOI:——
日期:——
Reaction of Polarized Ketene<i>S,N</i>-Acetals with Bromoacetaldehyde Diethyl Acetal: Synthesis of 1-Substituted 3-Acyl- and 3-Nitro-2-methylthiopyrroles and 1,2-Annulated 3-Acylpyrroles
作者:Akhilesh K. Gupta、R. T. Chakrasali、H. Ila、H. Junjappa
DOI:10.1055/s-1989-27179
日期:——
A regiospecific route for 1-substituted 3-acyl- and 3-nitro-2-methylthiopyrroles 3a-l and the corresponding 1,2-annulated 3-acylpyrroles 5a-c has been developed by reaction of acyl- and nitroketene S,N-acetals 1a-l and 4a-c with bromoacetaldehyde diethyl acetal in dimethylformamide.