PHOSPHOROAMIDE COMPOUND, METHOD FOR PRODUCING THE SAME, LIGAND, COMPLEX, CATALYST, AND METHOD FOR PRODUCING OPTICALLY ACTIVE ALCOHOL
申请人:National University Corporation Nagoya University
公开号:EP2128167A1
公开(公告)日:2009-12-02
Disclosed is a method for highly efficiently obtaining an optically active alcohol from a carbonyl compound highly enantioselectively. Also disclosed is a ligand used in such a method. Specifically, an optically active alcohol is obtained by reacting a carbonyl compound and an organozinc compound by using a ligand (L) shown below.
Two types of chiral phosphinamide catalysts 3a-d and 4a-c were prepared from L-phenylalanine and L-proline, respectively. Their applications in the asymmetric borane reduction of prochiral ketones were investigated. The chiral secondary alcohols were obtained with excellent chemical yields and moderate to high enantionteric excesses. (C) 2003 Elsevier Science Ltd. All rights reserved.
Ramage, Robert; Hopton, David; Parrott, Maxwell J., Journal of the Chemical Society. Perkin transactions I, 1985, p. 461 - 470
作者:Ramage, Robert、Hopton, David、Parrott, Maxwell J.、Richardson, Reginald S.、Kenner, George W.、Moore, Geoffrey A.
DOI:——
日期:——
Ramage, Robert; Hopton, David; Parrott, Maxwell J., Journal of the Chemical Society. Perkin transactions I, 1984, p. 1357 - 1370
作者:Ramage, Robert、Hopton, David、Parrott, Maxwell J.、Kenner, George W.、Moore, Geoffrey A.
DOI:——
日期:——
Group-Assisted Purification (GAP) for Protection of Amino Acids Using N-Phosphonyl Functional Groups
作者:Guigen Li、Guanghui An、Cole Seifert、Hao Sun、Yi Pan
DOI:10.3987/com-14-s(k)25
日期:——
Various phosphonyl halides have been synthesized and utilized as protection groups for amino acids. The protection synthesis was performed via GAP (Group-Assisted Purification) procedure under convenient conditions without the use of column chromatography and recrystallization. The synthesis can be carried out on applicational scales with excellent yields (82% - 98%). The phosphonyl protection of amino acids would provide a new greener tool for GAP peptide synthesis.