Process for the production of carbinol bases from indoline compo

Details Process for the production of carbinol bases from indoline compo Process for the production of carbinol bases from indoline compo

1981-06-01

1983-02-08

Demers, Arthur P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

542417, 542419, C09B 5500, C07D21172, C07D21173

Patent

active

043728863

ABSTRACT:
The invention describes a novel single step process for the production of carbinol bases of the formula I ##STR1## wherein R is the methyl or ethyl group, each R.sub.3 independently is a C.sub.1 -C.sub.4 alkyl group and the benzene rings A and/or B can be unsubstituted or substituted, which process comprises alkylating 1 mole of a dye base of the formula II ##STR2## or the hydrogen salt thereof of the formula IIa ##STR3## wherein R.sub.3, A and B are as defined for formula I and X is any anion, in aqueous alkaline medium having a pH value of at least 10, with at least 2 moles of a compound that introduces the radical R. The carbinol bases obtained are valuable intermediates for obtaining in particular cationic compounds containing any anions, especially carboxylic acid anions, most preferably an acetate anion.

REFERENCES:
patent: 3345355 (1967-10-01), Raue
patent: 3346322 (1967-10-01), Finkenauer et al.
patent: 3769279 (1973-10-01), Kuhlthau et al.
patent: 3773764 (1973-11-01), Lehment et al.
patent: 3973903 (1976-08-01), Clarke
patent: 3992140 (1976-11-01), Psaar
patent: 4026885 (1977-05-01), Frey et al.
patent: 4251656 (1981-02-01), Leow et al.
patent: 4281112 (1981-07-01), Lehment et al.

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