Reactions of aminals of conjugated ?-dimethylaminoaldehydes with coumarin derivatives
作者:Zh. A. Krasnaya、Yu. V. Smirnova、A. S. Tatikolov、V. S. Bogdanov、E. V. Nikishova、V. L. Savel'ev
DOI:10.1007/bf00702402
日期:1995.3
ω-dimethylaminoaldehydes with various derivatives of 4-methyl- or 3-acetyl coumarins produce ω-dimethylaminopolyenones containing coumarin fragments. Unlike the starting coumarins, these polyenones practically do not fluoresce. Dialkyl-substituted coumarins with hydroxyl groups in positions 5 or 7 react with β-dimethylaminoacrolein aminal to give salts consisting of 1 mole of doubly charged dimethylaminopropenyl