Influence of Surface Protonation–Deprotonation Stimuli on the Chiroptical Responses of (<i>R</i>)-/(<i>S</i>)-Mercaptosuccinic Acid-protected Gold Nanoclusters
作者:Ryota Ueno、Hiroshi Yao
DOI:10.1246/cl.140953
日期:2015.2.5
Racemic mixtures of mercaptosuccinic acid (MSA) are optically resolved to obtain enantiopure (R)-/(S)-MSA, and the (R)-/(S)-MSA-protected gold nanoclusters are synthesized. Circular dichroism responses of the nanoclusters are strongly dependent on the pH of the solution. In particular, chiroptical enhancement is observed under highly acidic conditions, which can be due both to the electronic and conformational origins of the surface chiral MSA ligand.
A new highly enantioselective synthesis of both (R)- and (S)-2-mercaptosuccinic acids
作者:Bang-Chi Chen、Mark S Bednarz、Octavian R Kocy、Joseph E Sundeen
DOI:10.1016/s0957-4166(98)00149-9
日期:1998.5
(R)- and (S)-2-Mercaptosuccinic acids 4 were prepared in five steps in >96% ee and 49-52% overall yield via a new efficient synthesis starting from commercially available L- and D-aspartic acids. (C) 1998 Elsevier Science Ltd. All rights reserved.
Holmberg, Arkiv foer Kemi, 1947, vol. 24 A, # 4, p. 1,7
作者:Holmberg
DOI:——
日期:——
LeBlanc, Daren J.; Smith, Richard W.; Wang, Zhixian, Journal of the Chemical Society, Dalton Transactions, 1997, # 18, p. 3263 - 3267
作者:LeBlanc, Daren J.、Smith, Richard W.、Wang, Zhixian、Howard-Lock, Helen E.、Lock, Colin J. L.
DOI:——
日期:——
Synthesis of (racemization prone) optically active thiols by SN2 substitution using cesium thiocarboxylates