Process for the purification of N-morpholinoalkyl dihydropyridin

Details Process for the purification of N-morpholinoalkyl dihydropyridin Process for the purification of N-morpholinoalkyl dihydropyridin

1983-08-11

1985-03-05

Ramsuer, Robert W.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

544128, 544131, C07D41306

Patent

active

045032238

ABSTRACT:
N-Morpholinoalkyl dihydropyridines are purified by precipitating their acid addition salts in an acidic organic solvent, dissolving the precipitate in a two-phase solvent system and crystallizing the N-morpholinoalkyl dihydropyridines from the organic phase of the two-phase solvent system.

REFERENCES:
patent: 4258042 (1981-03-01), Loev et al.

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