Diels-alder cycloaddition reactions of 1,3-diazabutadienes with ketenes
β Scribed by Sujit Nandy Mazumdar; Ibrahim Ibnusaud; Mohinder Pal Mahajan
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- French
- Weight
- 143 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Diels-Alder cycloaddition reactions of I-aryl-4-dimethylamino-2-phenyl-1 ,?-diazabncadicrlrs with rnonophenyl and diphenylketenes, resulting in high yields of pyrirnidin-h-one derivatives are reported. Cycloaddition reaction of hetero-dienes have been shown to be of great potentia! for
π SIMILAR VOLUMES
The Diels-Alder reactions of l-methoxycarbonyl-4-dimethylamino-2-thiomethyl-1,3\_diazabutadiene with dimethyl acetylenedicarboxylate (DMAD) and monophenyl ketene give pyrimidines in one pot.
## Abstract For Abstract see ChemInform Abstract in Full Text.
&ii&R&: 1,3-Diazabutadienes react with diphenylketene in [2+2] -and [4+2] cycloaddition reacg$ons, depending on the substitution pattern. Spectroscopic data (IR, H-and C-WWR) and results of quantummechanical model calculations (ab initio 3-2lG) are presented. and reactions of 1,3\_diazabutadienes 1
cycloaddition reactions of I-aryl-4-dimethylamino-1,3diaza-1,3-butadienes (~),l-aryl-4-dimethylamino-2-methylthio-l,3-diaza-l,3butadienes 12). l-aryl-4-methylthio-2-phenyl-4-sec.amino-l,3-diaza-l,3butadienes ( 2) and 4, 4-bis~sec.amino~-l,2-diphenyl-l,3-diaza-l,3-bu~adienes 112) with monophenylketen