1224387-04-5Relevant articles and documents
Dynamic kinetic resolution of (S)-mandelate-derived a-bromo esters in nucleophilic substitution and asymmetric syntheses of 3-substituted morpholin-2-ones
Lee, Yoon Min,Kang, Kyoung Hee,Min, Hye-Min,Lim, Hyun Jin,Park, Eun-Hyung,Park, Yong Sun
experimental part, p. 1 - 15 (2010/08/06)
Dynamic kinetic resolution of (S)-mandelate-derived α-bromo esters in nucleophilic substitution reaction has been investigated. Substitutions with various alkyl amine nucleophiles in the presence of TBAI and DIEA can provide various α-amino esters up to 81% yield and 97:3 dr. Also, the substitution of α-bromo esters with N-substituted 2-aminoethanol nucleophiles and following spontaneous cyclization provides a practical protocol for asymmetric syntheses of 3-substituted morpholin-2-ones up to 95:5 er. ARKAT USA, Inc.