Amorphous aluminophosphates are industrial catalysts that active in aldol-type condensations, dehydration and alkylation. The intrinsic nature of the sites present these materials is poorly understood. Herein we report a comparative investigation catalytic amorphous crystalline (AFI topology) their corresponding iron-containing analogues, employing Claisen-Schmidt condensation acetophenone benz...

Mukaiyama s classic catalytic asymmetric aldol reaction with enolsilanes has been improved upon over the years; now new approaches to the reaction have been developed. Those reviewed here are the use of new transition metal based catalysts for the aldol reaction using silyl enolates, the use of other O-silylated nucleophiles, tin-modified or even unmodified ketones as substrates, and the use of...

Asymmetric aldol reactions of α-amino acid derivatives via memory of chirality were developed. Chiral oxazolidones with contiguous tetra- and trisubstituted chiral centers were obtained in 78-94% ee by the asymmetric aldol reaction followed by intramolecular acylation.

Eleven new 2-styrylbenzothiazole-N-oxides have been prepared by aldol - type condensation reactions between 2-methylbenzothiazole-N-oxide and para-substituted benzaldehydes. Compounds with cyclic amino substituents showed typical push-pull molecule properties. Four compounds were tested against various bacterial strains as well as the protozoan Euglena gracilis as model microorganisms. Unlike p...

The title compound, C(14)H(17)NO(2)S(2), was synthesized by asymmetric aldol condensation of N-acyl-thia-zolidinethione with acetaldehyde. In the mol-ecule, the thia-zolidine five-membered ring assumes an envelope conformation. Inter-molecular C-H⋯O and intra-molecular O-H⋯O and C-H⋯S hydrogen bonding helps to stabilize the structure.

A concise total synthesis of the G2/M DNA damage checkpoint inhibitor psilostachyin C is reported using a 1,4-addition-aldol condensation-ring-closing metathesis (RCM) strategy. Initial biological studies indicate that psilostachyin C could enhance the sensitivity of the HeLa cell toward camptothecin (CPT) treatment via the activation of the caspase-3 mediated apoptosis pathway.

A highly efficient and simple method for the preparation of α,α´-bis(arylidene)cycloalkanones under solvent-free conditions has been developed. The crossed-aldol condensation of cycloalkanones (1 eq.) with arylaldehydes (2 eq.) in the presence of 2.5 mol% of ionic liquid 1,3-disulfonic acid imidazolium hydrogen sulfate {[Dsim]HSO4} afforded the title compounds in high yields and short reaction ...