Process for preparing 5,6-dihydro-2-methyl-1,4-oxathiin derivati

Details Process for preparing 5,6-dihydro-2-methyl-1,4-oxathiin derivati Process for preparing 5,6-dihydro-2-methyl-1,4-oxathiin derivati

1977-10-03

1979-05-01

Randolph, John D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

424276, 260327P, C07D32704

Patent

active

041523342

ABSTRACT:
5,6-Dihydro-2-methyl-1,4-oxathiin derivatives are prepared by converting an appropriate 1,3-oxathiolane derivative to its sulfoxide and subjecting the sulfoxide to acid catalyzed rearrangement to form the desired product.

REFERENCES:
patent: 3249499 (1966-05-01), Schmeling et al.
patent: 3882237 (1975-05-01), Knight et al.
Breslow et al., Multi-Sulfur and Sulfur And Oxygen Five- And Six- Membered Heterocycles, Part One, pp. 234 to 237 and 241, Interscience Publishers, NY (1966).
Breslow et al., Multi-Sulfur and Sulfur And Oxygen Five- And Six- Membered Heterocycles, Part Two, pp. 842 to 844, Interscience Publishers (NY), 1966.
Djerassi et al., J. Am. Chem. Soc., vol. 75, pp 3704-3708 (1953).
Schmidt et al., Chemiches Berichte, vol. 97, pp. 1649 to 1653 (1964).
Emerson et al., Chem. Abstracts, vol. 75, abst. 129470f (1971) (abst. of Tetrahedron Lett., 1971, pp. 3445-3448).

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