77548-27-7Relevant academic research and scientific papers
Phase-transfer catalyzed Michael addition reaction using a new C 2-symmetric quaternary ammonium salt derived from l-proline
Su, Ce,Xie, Yi-Ming,Zhang, Qing-Tang
experimental part, p. 1004 - 1008 (2012/06/16)
A new C2-symmetric quaternary ammonium salt easily prepared from l-proline, was developed and used as an efficient phase-transfer catalyst (PTC) in Michael addition reaction of various active methylene compounds to aromatic enones. Malonate est
Highly efficient 1,4-addition of 1,3-diesters to conjugated enones by In/TMSCl
Lee, Phil Ho,Seomoon, Dong,Lee, Kooyeon,Heo, Yunkiu
, p. 2510 - 2513 (2007/10/03)
Organoindium reagents derived from indium and diethyl bromomalonates were added to a wide range of conjugated enones in a 1,4-fashion in the presence of TMSCl under mild conditions, and corresponding oxo-1,3-diesters were obtained in good to excellent yields.
Amino acid catalyzed direct asymmetric aldol reactions: A bioorganic approach to catalytic asymmetric carbon-carbon bond-forming reactions
Sakthivel,Notz,Bui,Barbas III
, p. 5260 - 5267 (2007/10/03)
Direct asymmetric catalytic aldol reactions have been successfully performed using aldehydes and unmodified ketones together with commercially available chiral cyclic secondary amines as catalysts. Structure-based catalyst screening identified L-proline a
Asymmetric induction in Michael addition reactions mediated by C2-symmetric aluminate
Manickam,Sundararajan
, p. 516 - 518 (2007/10/03)
The C2-symmetric chiral amino-diol, (1R, 5R)-3-aza-3- benzyl-1,5-diphenylpentan-1,5-diol (1) is available readily from the reaction of benzylamine with a twofold excess of enantiopure R(+)-styrene epoxide. We have recently shown that the titano
Michael reaction in the solid state under microwave irradiations
Boruah, Anima,Baruah, Mukulesh,Prajapati, Dipak,Sandhu, Jagir S.
, p. 965 - 966 (2007/10/03)
The Michael reaction of α,β-ethylenic ketones with nitroalkane, diethylmalonate, acetonitrile and acetylacetone in presence of alumina and without any solvent, under microwave irradiations proceeded very efficiently and furnished excellent yields of adducts.
A new method for the preparation of Michael adducts and cyclic enones using lithium chloride-hexamethylphosphoramide system
Ozaki,Kubo,Okamura,Kim
, p. 734 - 737 (2007/10/02)
A new procedure using lithium chloride in hexamethylphosphoramide was found to be useful for the synthesis of Michael-type adducts and cyclic enones. Selectivity for the two products could be controlled by altering the reaction temperature employed. The urea-type solvents were also examined instead of hexamethylphosphoramide.
Process for preparing highly substituted phenyls
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, (2008/06/13)
A process is described in which a lactone STR1 is reacted with an alkylester X1 --CH2 and an oxidizing or dehydrogenating agent to form the phenol ester STR2
