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

1991-03-04

1992-01-21

Hollrah, Glennon H.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549 49, 585357, C07D33366, C07D33364

Patent

active

050829530

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:
patent: 2624664 (1953-01-01), Mowry et al.
patent: 3075003 (1963-01-01), Blumenthal
patent: 3176022 (1965-03-01), Blumenthal
patent: 3491083 (1970-01-01), Mangini et al.
patent: 4179468 (1979-12-01), Kone et al.
patent: 4244890 (1981-01-01), Kone et al.
R. Bloch et al., Tetrahedron Letters, "A General and Stereoselective Synthesis of (E,E)-Conjugated Dienes," 24(12) pp. 1247-1250 (1983).
N. Novitskaya, et al., Chemical Abstracts 88:190512f, "New Synthesis Methods of 2-Thiahydrindan and Dicyclohexyl Sulfide," p. 734 (1978).

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