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The direct catalytic asymmetric aldol reaction of α-substituted nitroacetates with aqueous formaldehyde under base-free neutral phase-transfer conditions
Laboratory of Synthetic Organic Chemistry and Special Laboratory of Organocatalytic Chemistry, Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Japan
E-mail: maruoka@kuchem.kyoto-u.ac.jp
; Fax: +81-75-753-4041
; Tel: +81-75-753-4041
Org. Biomol. Chem., 2012,10, 5753-5755
DOI:
10.1039/C2OB07193B
Received
29 Dec 2011,
Accepted
30 Jan 2012
First published online
30 Jan 2012
Enantioselective direct aldol reaction of α-substituted nitroacetates with aqueous formaldehyde for the synthesis of α-alkyl serines has been achieved under base-free neutral phase-transfer conditions with a bifunctional chiral phase-transfer catalyst.