Process for production of optically active bases

Details Process for production of optically active bases Process for production of optically active bases

1978-12-13

1980-10-07

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603405R, 2605705R, 2605706, 562401, C07C10104, C07B 1900, C07C 9116, C07C 8728

Patent

active

042268036

ABSTRACT:
Optically active bases are prepared by reacting the racemic base with an optically active half amide of an unsaturated aliphatic dicarboxylic acid of the formula ##STR1## where R.sub.1, R.sub.2 and R.sub.3 are the same of different and are hydrogen, halogen, a hydroxy group, a methyl group or a methoxy group or two of R.sub.1, R.sub.2 and R.sub.3 together are a methylenedioxy group, R.sub.4 is hydrogen or a methyl group, R.sub.5, R.sub.6 and R.sub.7 independently are hydrogen or a C.sub.1 -C.sub.4 alkyl group and n is 0 or 1 and optionally splitting an optically homogeneous salt fraction into the corresponding optically active base and the added half amide.

REFERENCES:
patent: 2276508 (1942-03-01), Nabenhauer
patent: 3028395 (1962-04-01), Gillingham
patent: 3028430 (1962-04-01), Gillingham
patent: 3576854 (1971-04-01), Felder et al.
patent: 4002666 (1977-01-01), Shirai et al.
Helvetica Chemica Acta, vol. 52, Nr 36-37, pp. 329-333, (1969).

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