Process for the prepartation of a substituted 2,5-diamino-3-hydr

Details Process for the prepartation of a substituted 2,5-diamino-3-hydr Process for the prepartation of a substituted 2,5-diamino-3-hydr

1995-04-10

1996-08-06

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

564164, 548469, 548491, 546 98, C07C26100, C07C23300, C07D20904

Patent

active

055435521

ABSTRACT:
Intermediates and processes are disclosed which are useful for the preparation of a substantially pure compound of the formula: ##STR1## wherein R.sub.6 and R.sub.7 are each hydrogen or R.sub.6 and R.sub.7 are independently selected from ##STR2## wherein R.sub.a and R.sub.b are independently selected from hydrogen, loweralkyl and phenyl and R.sub.c, R.sub.d and R.sub.e are independently selected from hydrogen, loweralkyl, trifluoromethyl, alkoxy, halo and phenyl; and ##STR3## wherein the naphthyl ring is unsubstituted or substituted with one, two or three substitutents independently selected from loweralkyl, trifluoromethyl, alkoxy and halo; or

REFERENCES:
Ghosh et al J Org Chem 58 1025 (1993).

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