Sulpholenes and processes for their preparation and use

Details Sulpholenes and processes for their preparation and use Sulpholenes and processes for their preparation and use

1991-08-02

1992-06-23

Pal, Asok

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

From nonhydrocarbon feed

585603, 549 53, C07C 100, C07C 132

Patent

active

051244993

ABSTRACT:
A sulpholene compound and more particularly 4,4-dimethyl-2,2-dioxo-1,2,4,5,6,7-hexahydro-benzo[c]thiophene. These compounds are prepared by bringing myrcene sulphone into contact with a strong acid. The compounds of the present invention can be used as synthesis intermediates in the preparation of vitamin A.

REFERENCES:
Bloch and Abecassis, Tetrahedron Letters, "A General and Stereoselective Synthesis of (E,E)-Conjugated Dienes", 24, 1247-1250 (1983).
Mock, J. Amer. Chem. Soc. "Stereochemical Consequences of Orbital Symmetry Control in the Reversible Combining of Sulfur Dioxide with Conjugated Systems (Sulfolene Reactions)" 97, 3666-3672 (1975).

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