Process for the preparation of coumarin compounds

Details Process for the preparation of coumarin compounds Process for the preparation of coumarin compounds

1985-01-22

1988-11-29

Fan, Jane T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D31116

Patent

active

047882980

ABSTRACT:
Disclosed is a three-step process for the preparation of 3-chloro-4-alkyl-7-hydroxy or alkoxycoumarin compounds starting with resorcinol or a monoalkyl ester of resorcinol and chlorinating an intermediate compound with sulfuryl chloride in the presence of acetic acid or an alkyl acetate.

REFERENCES:
patent: 3923836 (1975-12-01), Bender et al.
patent: 4452811 (1984-06-01), della Valle
Israelstam et al.--Chemistry and Industry--Nov. 1, 1958, 1430.
Shamshurin et al.--Chem. Abst. 64:8127c.
Yang et al.--Chem. Abst. 95:161,758e.
Merchant et al.--Chem. Abst. 86:171,196y.
Zagorevskii et al.--Chem. Abst. 76:140,425m.
Chandhari Chemistry and Industry, Jul. 18, 1983, p. 568.
Mueller et al., Chem. Abst. 91:39255v.
Kozlova et al., Chem. Abst. 75:76528x.

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