Process for preparing 2-[bis(aryl)methyl]benzoic acids

Details Process for preparing 2-[bis(aryl)methyl]benzoic acids Process for preparing 2-[bis(aryl)methyl]benzoic acids

1983-04-14

1985-07-09

Hollrah, Glennon H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260393, C09B 1110

Patent

active

045281360

ABSTRACT:
Process comprises the combination of the two steps of condensing Y-benzaldehyde with N-R.sup.2 -N-R.sup.3 -aniline and 3-N-R-N-R.sup.1 -benzoic acid, under acidic conditions to produce 2-[(Y-phenyl) (4-N-R.sup.2 -N-R.sup.3 -aminophenyl)methyl]-5-N-R-N-R.sup.1 -aminobenzoic acid, and oxidizing said benzoic acid to produce 3-(Y-phenyl)-3-(4-N-R.sup.2 -N-R.sup.3 -aminophenyl)-6-N-R-N-R.sup.1 -aminophthalide.

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The Chemistry of Synthetic Dyes, Venkataraman, vol. II, pp. 711-713, 1952, Academic Press Inc., New York, N.Y.
Beilsteins Handbuch der Organische Chemie, vol. 14, p. 549.

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