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Note | Regular issue | Vol 55, No. 7, 2001, pp.1311-1314
Published online, 1st January, 1970
DOI: 10.3987/COM-01-9207
Efficient Chemoselective Reduction of 3-Substituted Coumarins Utilizing ortho-Phenylenediamine and Benzaldehyde

Francesco Risitano,* Giovanni Grassi, Francesco Foti, and Cristina Bilardo

*Dipartimento di Chimica Organica e Biologica, Università di Messina, Vill. S. Agata, I-98166 Messina, Italy


2-Phenylbenzimidazoline, generated in situ from ortho-phenylenediamine and benzaldehyde, is an effective reagent to achieve the chemoselective reduction of the styrenic double bond in 3-substituted coumarins, which takes place in high yield.