Process for the manufacture of pyrono-condensed coumarins

Details Process for the manufacture of pyrono-condensed coumarins Process for the manufacture of pyrono-condensed coumarins

1977-12-27

1979-05-15

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

26034342, 542420, C07D49304

Patent

active

041547411

ABSTRACT:
A new process for the manufacture of pyrono-condensed coumarin compounds by reacting an anil derivative of a heterocyclic compound with a cyanoacetic acid derivative in the presence of a base and a strong polar aprotic solvent is described.

REFERENCES:
checchi et al. "Chem. Abst." 67:64262(c) 1965.
March "Advanced Org Chem" (1968) pp. 464-465.
Nair, 74:111,944(h) (1971).
Ziegler et al., 73:45,383(a) (1970).
Anker et al., 76:59492j (1971).

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