Process for the preparation of 4'-alkoxy-4-naphthalimido-pyrazol

Details Process for the preparation of 4'-alkoxy-4-naphthalimido-pyrazol Process for the preparation of 4'-alkoxy-4-naphthalimido-pyrazol

1973-05-21

1976-01-13

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260281, C07D21724, C07D23140

Patent

active

039324133

ABSTRACT:
A process for the preparation of an optical brightening agent falling within the formula: ##SPC1##
In which R represents an alkyl group containing 1 to 4 carbon atoms, R.sub.1 and R.sub.2 each represent a hydrogen atom, an alkyl group containing 1 to 4 carbon atoms or a phenyl group either unsubstituted or substituted by at least one alkyl group containing 1 to 4 carbon atoms, R.sub.3 and R.sub.4 each represent an alkyl group containing 1 to 4 carbon atoms and A.sup.- represents a monovalent anion which comprises reacting a compound of the formula: ##SPC2##
In which R.sub.1, R.sub.2, R.sub.3, R.sub.4, and A.sup.- have the meanings given above, with an alcoholate of the formula RO-Me in which R represents an alkyl group containing 1 to 4 carbon atoms and Me is an alkali metal; compounds falling within the formula: ##SPC3##
Wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and A.sup.- have the meanings given above.

REFERENCES:
patent: 3649633 (1972-03-01), Mingasson et al.
patent: 3697525 (1972-10-01), Okada

Affiliated with

Also associated with

Rating

Process for the preparation of 4'-alkoxy-4-naphthalimido-pyrazol 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 4'-alkoxy-4-naphthalimido-pyrazol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of 4'-alkoxy-4-naphthalimido-pyrazol will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-746503