Process for the preparation of...

Details Process for the preparation of... Process for the preparation of...

C - Chemistry, Metallurgy

07

D

C07D 251/46 (2006.01)

Patent

CA 2042763

A-18089/A/CGM 369 Process for the preparation of alkylhydroxyanilinothiotriazine derivatives Abstract of the Disclosure A process for the preparation of compounds of formula I Image (I), wherein R1 and R2 are each independently of the other hydrogen, C1-C12alkyl, C5-C6cycloalkyl or phenyl, and R3 and R4 are each independently of the other C1-C18alkyl, C5-C6cycloalkyl, phenyl, phenyl which is substituted by C1-C6 alkyl and/or hydroxy, or phenyl-C1-C4alkyl.The process comprises reacting a compound of formula III Image (III) with a nitrite in aqueous or aqueous/organic medium to a compound of formula II Image (II), extracting said compound of formula II from the reaction solution with a solvent, hydrogenating said compound, without isolation, in the cited solvent and in the presence of a palladium catalyst, to the corresponding p-aminophenol, and reacting said amino- phenol, without isolation, with cyanuric chloride and a compound of formula HSR3 or HSR4 or a mixture of compounds of formulae HSR3 and HSR4. The products are obtained in high yield and purity.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1969759