✦ LIBER ✦

Synthesis and characterization of some coumarins with two hydroxy or methoxy substituents

✍ Scribed by Yagamare Fall; Lourdes Santana; Eugenio Uriarte

Publisher: Journal of Heterocyclic Chemistry
Year: 2001
Tongue: English
Weight: 19 KB
Volume: 38
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570380534

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✦ Synopsis

Abstract

The first synthesis of the 6‐hydroxy‐4‐methoxycoumarin (5) was carried out in 25 % overall yield from 6‐methoxy‐4‐hydroxycoumarin (1) by hydrolysis of the methoxy group and subsequent selective methylation of the hydroxyl group at position 4. The ^1^H and ^13^C NMR data of compounds 1–6 are reported.

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## SYNOPSIS 4-Methoxyphenyl oxazoline (MPO) was synthesized from 4-methoxybenzonitrile and ethanolamine by using cadmium acetate as a catalyst. 4-Allyloxy phenyl oxazoline (APO) was synthesized from 4-allyloxybenzonitrile, which was made from 4-cyanophenol. A series of random copolymers of APO and