Process for the preparation of benzylidene compounds

Details Process for the preparation of benzylidene compounds Process for the preparation of benzylidene compounds

C - Chemistry, Metallurgy

07

C

260/477.3

C07C 69/738 (2006.01) C07C 205/56 (2006.01) C07C 255/57 (2006.01)

Patent

CA 1281032

Process for the preparation of benzylidene compounds Abstract A process for the preparation of a benzylidene compound of the formula Image in which R1 is hydrogen or one or two substituents independently selected from the group consisting of nitro, cyano, halogen, SO3H, alkyl, alkoxy and fluorinated alkyl, each with l to 4 C atoms and two or three fluorine substituents, and R3 is alkyl with 1 to 10. C atoms, which is optionally interrupted by an oxygen in the chain or is optionally substituted by fluorine, chlorine, hydroxyl or a methylbenzylamine group, comprising reacting an acetal of the formula Image in which R2 each independently is alkyl with 1 to 6 C atoms, which is optionally substituted by phenyl, or the two radicals R2 conjointly form an alkylene radical with 1 - 4 C atoms, with a .beta.-ketocarboxylic acid ester of the formula CH3CO-CH2-COOR3 in the presence of an acid at a temperature between about 40 and 120°. Le A 23 635

503586

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1197576