Preparation of 2,4-diamino-5-(4-amino-3,5-substituted-benzyl)-py

Details Preparation of 2,4-diamino-5-(4-amino-3,5-substituted-benzyl)-py Preparation of 2,4-diamino-5-(4-amino-3,5-substituted-benzyl)-py

1978-02-01

1979-01-30

Coughlan, Jr., Paul M.

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

Organic compounds

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

C07D23948

Patent

active

041374118

ABSTRACT:
A benzylpyrimidines of the formula ##STR1## wherein r.sup.1 and R.sup.2 independently are C.sub.1-3 -alkyl or C.sub.1-3 -alkoxy, and R is hydrogen or lower alkyl, is treated with hydroxylamine or a salt thereof in polyphosphoric acid or alternatively, when R is hydrogen, is treated with sodium azide in polyphosphoric acid, to yield the corresponding 4-amino benzylpyrimidine.

REFERENCES:
patent: 3849407 (1974-11-01), Cresswell et al.
patent: 3931181 (1976-01-01), Kompis et al.
patent: 4008236 (1977-02-01), Perun et al.
Kompis et al., Chemical Abstracts, 83:43376h (1975).

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