1999 benzopyran derivatives

benzopyran derivativesR 0350

15 - 154Highly Efficient and Single Step Synthesis of 4-Phenylcoumarins and3,4-Dihydro-4-phenylcoumarins over Montmorillonite K-10 Clay, un-der Microwave Irradiation. — The here described microwave procedureto prepare title compounds (III) and (V) turns out quickly without solventsand in an open vessel without danger of explosion. — (SINGH, JASVINDER;KAUR, JASAMRIT; NAYYAR, SANDEEP; KAD, GOVERDHAN L.; J. Chem.Res., Synop. (1998) 5, 280-281; Dep. Chem., Panjab Univ., Chandigarh 160014, India; EN)

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