Enantiodivergent and γ-Selective Asymmetric Allylic Amination
作者:Jianmin Wang、Jie Chen、Choon Wee Kee、Choon-Hong Tan
DOI:10.1002/anie.201107317
日期:2012.3.5
judicious choice of the double bond geometry of the the β,γ‐unsaturated carbonyl compound. Computational studies reveal the possible origin of the inversed enantioselectivity, and the potential for enantiodivergent synthesis chiral amine‐containing substrates is attractive.
THE STRUCTURES AND CHEMISTRY OF THE PRODUCTS FROM THE REACTION OF AMINO ALCOHOLS WITH CARBON DISULPHIDE
作者:M. Skulski、D. L. Garmaise、A. F. McKay
DOI:10.1139/v56-105
日期:1956.6.1
with amino alcohols, shows that they possess the oxazolidine-2-thione structure rather than the tautomeric 2-thiol-2-oxazoline structure. 2-Benzylamino-4,4-dimethyl-2-oxazoline was formed by the reaction of benzylamine with 2-methylmercapto-4,4-dimethyl-2-oxazolinium iodide. 5-Diethylaminomethyl-2-oxazolidone and its methylation product also have been prepared.
Direct, Enantioselective, and Nickel(II) Catalyzed Reactions of
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‐Azidoacetyl Thioimides with Trimethyl Orthoformate: A New Combined Methodology for the Rapid Synthesis of Lacosamide and Derivatives
作者:Saul F. Teloxa、Stuart C. D. Kennington、Marc Camats、Pedro Romea、Fèlix Urpí、Gabriel Aullón、Mercè Font‐Bardia
DOI:10.1002/chem.202001057
日期:2020.9.4
3‐thiazolidine‐2‐thione with trimethyl orthoformate catalyzed by Tol‐BINAPNiCl2 in the presence of TESOTf and 2,6‐lutidine is reported. The heterocyclic scaffold can be easily removed by addition of a wide array of amines to give the corresponding enantiomerically pure 2‐azido‐3,3‐dimethoxypropanamides in high yields. Appropriate manipulation of the N‐benzyl amide derivative provides an efficient access to the antiepileptic
There exist three possible patterns for the reaction of cyclic 2-oxazolidinethione and 2-benzoxazolidinethione with arynes, namely (a) S-arylation, (b) N-arylation, and (c) aryne insertion into the thiocarbonyl group (CS). Our studies demonstrate that S-arylation wins out affording S-aryl dihydrooxazoles. In contrast, for related reactions of cyclic 2-benzoxazolinone and 2-benzimidazolinone with arynes