Bidentate chelation-controlled asymmetric synthesis of α-hydroxy esters based on the glycolate enolate alkylation
作者:Ju Eun Jung、Hyunsoon Ho、Hee-Doo Kim
DOI:10.1016/s0040-4039(00)00031-9
日期:2000.3
(S)-[(4R)-2,2-Dimethyl-1,3-dioxolan-4-yl](4-methoxyphenyl)methanol (4b) has been synthesized and evaluated as a chiral auxiliary for the asymmetricsynthesis of α-hydroxy esters based on bidentate chelation-controlled alkylation of glycolate enolate.
Spiro asymmetric induction. Synthesis of optically pure .alpha.-hydroxy acid derivatives by alkylation of a chiral glycolate enolate
作者:William H. Pearson、Minn Chang Cheng
DOI:10.1021/jo00369a049
日期:1986.9
PEARSON W. H.; MINN-CHANG CHENG, J. ORG. CHEM., 51,(1986) N 19, 3746-3748
作者:PEARSON W. H.、 MINN-CHANG CHENG
DOI:——
日期:——
A Brønsted Acid Catalyzed Cascade Reaction for the Conversion of Indoles to α‐(3‐Indolyl) Ketones by Using 2‐Benzyloxy Aldehydes
作者:Ankush Banerjee、Modhu Sudan Maji
DOI:10.1002/chem.201902268
日期:2019.9.2
A Brønstedacid catalyzed, operationally simple, scalable route to several functionalized α-(3-indolyl) ketones has been developed and the long-standing regioisomeric issue has been eliminated by choosing appropriate carbonyls. A readily available and cheap bottle reagent was used as the catalyst. This protocol was also applicable to the synthesis of densely functionalized α-(3-pyrrolyl) ketones. A
Dynamic Kinetic Resolution of α-Substituted β-Ketoesters Catalyzed by Baeyer-Villiger Monooxygenases: Access to Enantiopure α-Hydroxy Esters
作者:Ana Rioz-Martínez、Aníbal Cuetos、Cristina Rodríguez、Gonzalo de Gonzalo、Iván Lavandera、Marco W. Fraaije、Vicente Gotor
DOI:10.1002/anie.201103348
日期:2011.8.29
BVMOs make a play: The dynamic kineticresolution of racemic α‐alkyl‐β‐ketoesters was performed through a selective Baeyer–Villiger oxidation employing different Baeyer–Villigermonooxygenases (BVMOs) in mild basic media. The product diesters were obtained with excellent yields and enantioselectivities, and used as precursors for optically active α‐hydroxy esters.