Process for the preparation of 1,4-dihydro-pyridine derivatives

Details Process for the preparation of 1,4-dihydro-pyridine derivatives Process for the preparation of 1,4-dihydro-pyridine derivatives

1989-03-08

1992-06-30

Brust, Joseph P.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546321, C07D21102

Patent

active

051264579

ABSTRACT:
The invention is directed to processes for the preparation of dimethyl-1,4-dihydro-2,6-dimethyl-4-(2'-nitrophenyl)-pyridine-3,5-dicarbox ylate by reacting 1-methoxy-1-(2'-nitrophenyl)-N-(2'-nitrophenyl)methylene methanamie or 1-(2'-nitrophenyl)-N,N'-bis-(2'-nitrophenyl) methylene methanediamine with methyl acetoacetate in the presence of an amine compound or by reacting the monomeric or trimeric from of 2-nitrobenzaldimine with methyl acetoacetate.

REFERENCES:
Fox et al., J. Org. Chem. 16, 1259 (1951).
Smith, P. Chemistry of Open-Chain Organic Nitrogen Compounds, vol. I, W. A. Benjamin Inc., N.Y. (1965), pp. 298-299.

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