6-[(Dimethylamino)methylene]amino-1,3-dimethyluracil: A versatile aza-diene substrate for cycloaddition and michael-type reactions
作者:Eileen B. Walsh、Zhu Nai-Jue、Guo Fang、Heinrich Wamhoff
DOI:10.1016/s0040-4039(00)80505-5
日期:1988.1
6-[(Dimethylamino)methylene]amino-1,3-dimethyluracil 1 undergoes formal [4+2] cycloadditionreactions with electron deficient olefins to give pyrido[2,3-d]pyrimidines. With DMAD or azodicarboxylates Michael addition occurs leading to pyrrolo[3,4-c]pyridines (X-ray analysis) and theophylline derivatives.
Indium-catalyzed microwave-accelerated pot economic C–C bond formation process towards the ‘dry-media’ synthesis of pyrimidine derivatives
作者:Manas M. Sarmah、Debajyoti Bhuyan、Dipak Prajapati
DOI:10.1039/c4ra14434a
日期:——
Substituted pyrimidines can be constructed in good yields via a microwave-accelerated C–C bond formation process through Lewis acid catalysed Diels–Alder reaction from easily available uracil diene and electron deficient acetylene carboxylate.