193476-02-7Relevant academic research and scientific papers
Iridium-catalyzed asymmetric allylic substitutions with bulky amines/oxidative double bond cleavage - Entry into the reetz synthesis of amino alcohols
Seehafer, Kai,Malakar, Chandi C.,Bender, Markus,Qu, Jianping,Liang, Chen,Helmchen, Günter
, p. 493 - 501 (2016/02/18)
Branched allylic amines were prepared by Ir-catalyzed enantioselective allylic aminations with the bulky N-nucleophiles HN(Boc)2 and HNBn2. The products were transformed into N-protected amino aldehydes, which were either reduced or coupled diastereoselectively with organometallic compounds to give vicinal amino alcohols. A formal synthesis of the neurokinin receptor antagonist (+)-L-733060 was carried out as an application. Ir-catalyzed enantioselective allylic aminations with bulky N-nucleophiles HN(Boc)2 and HNBn2 gave N-protected allylic amines, which were transformed into N-protected chiral amino aldehydes. These are useful chiral building blocks as previously demonstrated by Reetz et al. A formal synthesis of the neurokinin receptor antagonist (+)-L-733060 was carried out as an application.
Stereoselective and regioselective intramolecular Friedel-Crafts reaction of aziridinium ions for synthesis of 4-substituted tetrahydroisoquinolines
Chong, Hyun-Soon,Chen, Yunwei
supporting information, p. 5912 - 5915 (2014/01/06)
Optically active 4-substituted tetrahydroisoquinolines were synthesized via intramolecular Friedel-Crafts (FC) reactions of aziridinium ions in a highly regio- and stereoselective manner. Control experiments suggest the formation and ring-opening of aziri
DAST mediated preparation of β-fluoro-α-aminophosphonates
Ka?mierczak, Marcin,Koroniak, Henryk
experimental part, p. 23 - 27 (2012/06/30)
Herein, we report a new and convenient method for the synthesis of β-fluoro-α-aminophosphonates starting from naturally occurring l-amino acids. A key step in the synthetic protocol involves nucleophilic fluorination of N,N-dibenzylated-β-amino alcohols with diethylaminosulfur trifluoride (DAST).
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
scheme or table, 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.
Highly enantioselective synthesis of β-amino alcohols: A catalytic version
Metro, Thomas-Xavier,Pardo, Domingo Gomez,Cossy, Janine
, p. 6556 - 6561 (2008/02/10)
(Chemical Equation Presented) Highly enantioselective rearrangement of β-amino alcohols was realized by using a catalytic amount of trifluoroacetic anhydride.
Stereospecific rearrangement of β-amino alcohols catalyzed by H 2SO4
Métro, Thomas-Xavier,Pardo, Domingo Gomez,Cossy, Janine
, p. 2888 - 2890 (2008/02/12)
Highly enantioselective rearrangement of β-amino alcohols was realized by using a catalytic amount of H2SO4. Georg Thieme Verlag Stuttgart.
Highly enantioselective synthesis of β-amino alcohols
Metro, Thomas-Xavier,Appenzeller, Jerome,Pardo, Domingo Gomez,Cossy, Janine
, p. 3509 - 3512 (2007/10/03)
N,N-Dialkyl-β-amino alcohols derived from α-amino acids can be rearranged enantiospecifically by using TFAA/Et3N/NaOH to give 1,2-amino alcohols with enantiomeric excess up to 99%.
An expedient total synthesis of cis-(+)-sertraline from D-phenylglycine
Chandrasekhar,Venkat Reddy
, p. 1111 - 1114 (2007/10/03)
An efficient and practical total synthesis of cis-(+)-Sertraline is developed involving intramolecular Friedel-Crafts cyclization of an appropriately tailored D-phenylglycine. (C) 2000 Elsevier Science Ltd.
