Process for making n-(diphenylmethyl)piperazines

Details Process for making n-(diphenylmethyl)piperazines Process for making n-(diphenylmethyl)piperazines

2011-08-02

2011-08-02

Wilson, James O (Department: 1624)

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

Reexamination Certificate

active

07989623

ABSTRACT:
The compound of formula (8), in racemic or single enantiomeric form, is useful in making N-(diphenylmethyl)-piperazines such as cetirizine and levocetrizine.wherein Z is preferably phenyl.

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