Process for the preparation of 2,4-dihydroxybenzophenones

Details Process for the preparation of 2,4-dihydroxybenzophenones Process for the preparation of 2,4-dihydroxybenzophenones

1984-03-02

1986-02-04

Bashore, S. Leon

Distillation: processes, separatory

Vaporization zone under positive pressure or vacuum

203 38, 203 58, 203 47, 568315, 568322, 568324, B01D 310

Patent

active

045684294

ABSTRACT:
2,4-Dihydroxybenzophenone is prepared substantially quantitatively and in a highly purified form by reacting resorcinol with a benzotrihalide in the presence of an aqueous solution of N-methylpyrrolidone and subsequently subjecting the crude reaction product mixture to vacuum distillation.

REFERENCES:
patent: 2682559 (1954-06-01), Stanley et al.
patent: 2861104 (1958-11-01), Von Glahn
patent: 3526666 (1970-09-01), Ponder
patent: 3830845 (1974-08-01), Arimoto et al.
patent: 3843729 (1974-10-01), Lachmann et al.
patent: 3850988 (1974-11-01), Ruby
Chemical Abstract, vol. 83, 1975, Hireaki et al., "2-Hydroxy-4-(Alkadienyloxy)benzophenones", Abstract No. 78868x, p. 628.

Affiliated with

Also associated with

Rating

Process for the preparation of 2,4-dihydroxybenzophenones does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of 2,4-dihydroxybenzophenones, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of 2,4-dihydroxybenzophenones will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2339097