77887-48-0Relevant articles and documents
Oxidative asymmetric umpolung alkylation of Evans' β-ketoimides using dialkylzinc nucleophiles
Targel, Tom A.,Kumar, Jayprakash N.,Shneider, O. Svetlana,Bar, Sukanta,Fridman, Natalia,Maximenko, Shimon,Szpilman, Alex M.
supporting information, p. 2546 - 2549 (2015/04/14)
Umpolung alkylation of Evans' auxiliary substituted β-ketoimides affords the diastereomerically pure products in yields ranging from 40 to 80%. The reaction itself proceeds with diastereoselectivities between 3:1 and 18:1. Dialkylzinc serves as the nucleo
Assembly intermediates in polyketide biosynthesis: Enantioselective syntheses of β-hydroxycarbonyl compounds
Sann, Christine Le,Munoz, Dulce M.,Saunders, Natalie,Simpson, Thomas J.,Smith, David I.,Soulas, Florilene,Watts, Paul,Willis, Christine L.
, p. 1719 - 1728 (2007/10/03)
A versatile approach for the enantioselective synthesis of functionalised β-hydroxy N-acetylcysteamine thiol esters has been developed which allows the facile incorporation of isotopic labels. It has been shown that a remarkable reversal of selectivity occurs in the titanium mediated aldol reaction of acyloxazolidinone 7 using either (S)- or (R)-tert-butyldimethylsilyloxybutanal. The aldol products are valuable intermediates in the synthesis of 4-hydroxy-6-substituted δ-lactones. The Royal Society of Chemistry 2005.
A convenient method for synthesis of optically active methylphenidate from N-methoxycarbonylpiperidine by utilizing electrochemical oxidation and Evans aldol-type reaction
Matsumura, Yoshihiro,Kanda, Yasuhisa,Shirai, Kimihiro,Onomura, Osamu,Maki, Toshihide
, p. 7411 - 7422 (2007/10/03)
A new method to prepare optically active methylphenidate starting from piperidine is described. The method consists of a transformation of N-methoxycarbonylated piperidine to the corresponding α-methoxylated carbamate utilizing electrochemical oxidation f