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

1991-08-14

1992-07-07

Hollrah, Glennon H.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549 49, C07D33372

Patent

active

051284863

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:
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patent: 3176022 (1965-03-01), Blumenthal
patent: 4179468 (1979-12-01), Kane et al.
patent: 4244890 (1981-01-01), Kane et al.
R. Bloch et al., Tetrahedron Letters, "A General and Steroselective Synthesis of (E, F)-Conjugated Diens", 24 (1), pp. 1247-1250 (1983).
N. Novitskoga et al., Chemical Abstracts, 88:190512f, "New Synthesis of 2-Thiahydrindon and Dicyclohexylsulfide", p. 734 (1978).
K. Takabe et al., Chemistry and Industry, "New Synthetic Routes to B-Cyclogeranyl Phenyl Sulphide", p. 540 (1980).
H. Pommer, Chemical Abstracts, 54:9799d, "2-(2,6,6-Trimethylcyclohex-1-en-Lyl)Acetaldehyde", abstract of DE 1,025,871 (1958).

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