Reactions of Polarized KeteneS,N- andN,N-Acetals with Benzoyl Isothiocyanate: Synthesis of Novel 1-N-Aryl(alkyl)-2-phenyl-5- aroyl-6-methylthio(N-alkylamino)-4-thioxopyrimidines
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.
Polarized Ketene<i>N</i>,<i>N</i>- and<i>S</i>,<i>N</i>-Acetals as Novel Enamine Components for the Nenitzescu Indole Synthesis
作者:V. Aggarwal、A. Kumar、H. Ila、H. Junjappa
DOI:10.1055/s-1981-29375
日期:——
Reactions of Polarized Ketene<i>S,N</i>- and<i>N,N</i>-Acetals with Benzoyl Isothiocyanate: Synthesis of Novel 1-<i>N</i>-Aryl(alkyl)-2-phenyl-5- aroyl-6-methylthio(<i>N</i>-alkylamino)-4-thioxopyrimidines