Preparation of cis-1-hydroxy-3-substituted-6,6-dimethyl-6,6a,7,8

Details Preparation of cis-1-hydroxy-3-substituted-6,6-dimethyl-6,6a,7,8 Preparation of cis-1-hydroxy-3-substituted-6,6-dimethyl-6,6a,7,8

1976-07-06

1977-10-18

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603407, 2603409R, C07D31178

Patent

active

040545814

ABSTRACT:
Reaction of a 5-substituted resorcinol with a ketal of 4-(1-hydroxy-1-methylethyl)-3-cyclohexen-1-one in the presence of a suitable catalyst effects condensation to provide substantially exclusively a cis-1-hydroxy-3-substituted-6-6-dimethyl-6,6a,7,8,10,10a-hexahydro-9H-dibe nzo[b,d]pyran-9-one.

REFERENCES:
patent: 3576887 (1971-04-01), Hughes et al.
patent: 3929835 (1975-12-01), Winn et al.
patent: 3968125 (1976-07-01), Archer
Razdan et al., J. Am. Chem. Soc., 96, 5860 (1974).
Razdan et al. (I), Tetrahedron Letters, pp. 4947-4950 (1969).

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