A novel second-order nonlinear optical chromophore(DCDHF-2-V) was synthesized from 3-Hydroxy-3-methyl-2-butanae,propanedinitrile and 4-diethylaminobenzaldehyde by aldol condensation reaction.

The prospect of the catalysts for aldol condensation is also been put forward.

Then TiCl_4 with different tertiary amines was applied as catalyst to the intramolecular ring closing aldol condensation of 2,15-hexadecanedion to give dehydrogenated muscone,and the ratio of E/Z isomers was determined.

E,4E ) 2,4 dimethyl 5 ( p nitrophenyl)penta 2,4 dienoic acid and (2 E,4E ) 2,4 dimethyl 5 ( m nitrophenyl)penta 2,4 dienoic acid,potential antibiotics,were synthesized through aldol condensation and Perkin reaction in two steps,( 2E,4E ) 2,4 dimethyl 5 ( m nitrophenyl)penta 2,4 dienoic acid is a new compound and its structure was confirmed by IR and 1HNMR spectral analysis.

Using substituted benzaldehyde as starting materials, 2-methyl-3- (4 - nitrophenyl) allyl-triph- enylphosphonium bromide and 2-methyl-3-(3-nitrophenyl ) allyl-triphenylphosphonium bromide, intermedi-ates of potential antibiotics, were synthesized through Aldol condensation, reduction, bromization, etc.

Cloning and Expression of Aldolase Encoding Gene of Plasmodium falciparum FCC1/HN Strain;

Recent publications on C—C coupling in biotransformation were summarized with special focus on the application of aldolases and ketolases in this review.

[Objective] Produce Neu5Ac aldolase in the Fermentation of a inductive strain E.