Substituted-hydroxytetrahydroindanones

Details Substituted-hydroxytetrahydroindanones Substituted-hydroxytetrahydroindanones

1978-06-12

1980-02-19

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 4956

Patent

active

041894472

ABSTRACT:
Optically active organic compounds are prepared starting from optically inactive reactants by means of an optically active agent which influences the course of the reaction. In particular optically active compounds having a "meso" type carbon atom undergo an intramolecular ring closure in the presence of an optically active agent to yield an optically active product having one additional ring. The present process is particularly useful in the preparation of optically active bicyclic diketones which are important intermediates in the total synthesis of steroids.

REFERENCES:
patent: 2407673 (1946-09-01), Milas
patent: 2668858 (1954-02-01), Miescher et al.
patent: 2833694 (1958-05-01), Prelog
patent: 3897460 (1975-07-01), Hajos

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