Process for the preparation of oxazine dyestuffs

Details Process for the preparation of oxazine dyestuffs Process for the preparation of oxazine dyestuffs

1977-07-06

1978-11-14

Randolph, John D.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

260574, C07D26534

Patent

active

041257170

ABSTRACT:
Process for the preparation of basic oxazine dyestuffs by nitrosation of aminophenol ethers ##STR1## wherein R.sub.1 denotes hydrogen or optionally substituted alkyl or alkenyl,

REFERENCES:
patent: 3629248 (1971-12-01), Schafer et al.
patent: 3806504 (1974-04-01), Mundlos et al.
patent: 3828035 (1974-08-01), Baumann et al.

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