124083-20-1Relevant articles and documents
A Unified and Desymmetric Approach to Chiral Tertiary Alkyl Halides
Huang, Zhongxing,Low, Kam-Hung,Zhang, Suihan,Zheng, Yin,Zi, Weiwei
, p. 1951 - 1961 (2022/02/09)
Enantioenriched tertiary alkyl halides are prevalent in bioactive molecules and can serve as versatile synthetic intermediates to construct complex structures. While conventional access to these motifs often hinges on stereoselective carbon-halogen or carbon-carbon bond formation reactions, desymmetric approaches using halogenated and prochiral tetrasubstituted carbons are largely elusive in comparison. Here, we report that a suite of dinuclear zinc catalysts with a prolinol- or pipecolinol-derived tetradentate ligand can reductively desymmetrize a large collection of easily available halomalonic esters to α-halo-β-hydroxyesters. These polyfunctionalized tertiary alkyl fluorides, chlorides, and bromides proved to be useful intermediates toward fluorinated drug analogs and polyhalogenated monoterpenes. The facile intramolecular epoxidation of the chiral chloride and bromide products has also enabled expeditious access to natural products containing tertiary alcohol motifs.
Asymmetric synthesis of (R)-(+)-etomoxir via enzymatic resolution
Jew, Sang-Sup,Roh, Eun-Young,Baek, Eun-Young,Mireille, Labrouillere,Kim, Hyung-Ook,Jeong, Byeong-Seon,Park, Mi-Kyoung,Park, Hyeung-Geun
, p. 3395 - 3401 (2007/10/03)
An asymmetric synthesis of (R)-(+)-etomoxir 3, employing enzymatic resolution of ethyl 2-alkyl-2,3-dihydroxypropionate using Amano AK via transacylation is reported. Copyright (C) 2000 Elsevier Science Ltd.
Asymmetric synthesis of (R)-(+)-etomoxir
Jew, Sang-Sup,Kim, Hyung-Ook,Jeong, Byeong-Seon,Park, Hyeung-Geun
, p. 1187 - 1192 (2007/10/03)
An asymmetric synthesis of etomoxir 1, involving bromolactonization by using (S)-(-)-proline as a chiral auxiliary, is reported.
SYNTHESES OF ENANTIOMERS OF 2--OXIRANE-2-CARBOXYLIC ACID
Crilley, Martine M. L.,Edmunds, Andrew J. F.,Eistetter, Klaus,Golding, Bernard T.
, p. 885 - 888 (2007/10/02)
The title compounds were prepared by an efficient route featuring novel reductions of an acid chloride and the Sharpless epoxidation of an allylic alcohol.