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A novel and efficient synthesis of 5-substituted and 5,6-disubstituted 4-methylcoumarins using organocerium(III) reagents

โœ Scribed by Kazuo Nagasawa; Hajime Kanbara; Kazuya Matsushita; Keiichi Ito


Publisher
Elsevier Science
Year
1985
Tongue
French
Weight
250 KB
Volume
26
Category
Article
ISSN
0040-4039

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A silicon-mediated synthesis of novel 5-
โœ Nitya G. Kundu; Biswajit Das; Anjali Majumdar; Lakshmi N. Choudhuri ๐Ÿ“‚ Article ๐Ÿ“… 1987 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 256 KB

Sumnary: A highly efficient and general method for the synthesis of 5-(2-acylethynyl)-2,4dimethoxypyrimidines starting from 2,4-dimethoxy-5-/?r(brimethylsilyl)ethynyl~pyrimidine is described. The 5-(2-acylethynyl)-2,4-dimethoxypyrimidines have b?en converted to 5-(2-acyl-l-iodovinyl) uracils and 5-(