Itoh, S.; Tokunaga, T.; Sonike, S.; Kitamura, M.; Yamano, A.; Aoki, S. Asymmetric aldol reactions between acetone and benzaldehydes catalyzed by chiral Zn2+ complexes of aminoacyl 1,4,7,10-tetraazacyclododecane: Fine-tuning of the amino-acid side chains and revised reaction mechanism....
1. "Students were instructed to mix the benzaldehyde and acetone starting materials in their conical vials before adding the ethanolic sodium hydroxide solution. Why was this essential to the success of the reaction? What would have been the most likely product formed if the sodium hydroxide soluti...
benzoin reaction in the presence of benzoylformate decarboxylase in DMSO at room temperature to give the (R)-acyloin in 70% yield and 94%ee<1999TA4769>. Asymmetric aldol reaction of 2-pyridinecarbaldehydes has also been effected using asymmetric catalysis. Mukaiyama aldol reaction of 6-chloro-5...
ChemInform Abstract: Asymmetric Aldol Reactions Between Acetone and Benzaldehydes Catalyzed by Chiral Zn2+ Complexes of Aminoacyl 1,4,7,10-Tetraazacyclododecane: Fine-Tuning of the Amino-Acid Side Chains and a Revised Reaction Mechanismdoi:10.1002/chin.201408078...
ChemInform Abstract: Asymmetric Aldol Reactions Between Acetone and Benzaldehydes Catalyzed by Chiral Zn2+ Complexes of Aminoacyl 1,4,7,10-Tetraazacyclododecane: Fine-Tuning of the Amino-Acid Side Chains and a Revised Reaction Mechanism.doi:10.1002/chin.201408078...
Synthesis of 4-Hydroxy-4-(4-nitrophenyl)butan-2-one using p-Nitro Benzaldehyde and Acetone in Aqueous Micellar Media using L-ProlinePara-nitrobenzaldehydeCTABL-prolineAldolGreen solventWhen the asymmetric aldol reactions are catalyzed by amino acids in water, a certain amount of organic solvents ...
Synthesis of Dibenzylidene Acetone via Aldol Condensation of Diacetone Alcohol with Substituted BenzaldehydesAldol condensation between diacetone alcohol and substituted benzaldehyde using calcium hydroxide as a base was investigated. Reaction of diacetone alcohol with benzaldehyde in the presence of base formed...
When a molecular halide cluster [(Ta 6Cl 12)Cl 2(H 2O) 4]·4H 2O ( 1)/SiO 2 was treated in a helium stream above 200 °C, it catalyzed the aldol condensation of acetone with benzaldehyde to yield E-4-phenyl-3-buten-2-one. The bromide cluster of Ta and chloride clusters of ...
For the corresponding bromo compound, the reaction was much less satisfactory. Chloroacetone gave moderate yields of the alpha,beta-unsaturated coupling product. 2-Chlorobutanone produced two main products in low yield: the expected aldol and the corresponding 1,3-diketone. With 2-bromopropiophenone ...
Chemistry – An Asian JournalItoh, S.; Tokunaga, T.; Sonike, S.; Kitamura, M.; Yamano, A.; Aoki, S. Asymmetric aldol reactions between acetone and benzaldehydes catalyzed by chiral Zn2+ complexes of aminoacyl 1,4,7,10-tetraazacyclododecane: Fine-tuning of the amino-acid side chains ...