Asymmetric synthesis of organic compounds

Details Asymmetric synthesis of organic compounds Asymmetric synthesis of organic compounds

1970-12-09

1976-08-17

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260307R, 260338, 2603403, 2603406, 2603407, 2603409, 260451, 260457, 260458, 260464, 260468G, 260468K, 260468J, 260471C, 260473R, 260473F, 260473G, 260488R, 260488B, 260488CD, 260475SC, 260514G, 260514K, 260514J, 260514L, 260557R, 260586R, 260590E, 260592, 260473S, C07C 4500

Patent

active

039754405

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: 3432393 (1969-03-01), Bellet et al.
patent: 3501479 (1970-03-01), Remers et al.
patent: 3816536 (1974-06-01), Eder et al.

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