Effect on activity of Pb/HZSM-5 zeolite prepared by different method under aldehyde-ammonia condensation;

Aldehyde-ammonia condensation reaction is one of the typical routes to produce alkylpyridine.

The microstructure of HZSM-5 catalysts with different Si/Al ratio and their effects of Si/Al ratio on aldehyde-ammonia condensation were studied by means of BET, FT-IR, XRD, NMR techniques.

Study on aldol condensation reaction of cyclohexanone catalyzed by solid superbase

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.

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.