Ester derived titanium enolate aldol reaction: chelation controlled diastereoselective synthesis of syn -aldols
作者:Arun K Ghosh、Jae-Hun Kim
DOI:10.1016/s0040-4039(00)02227-9
日期:2001.2
A chelation controlled and highly diastereoselective synthesis of syn-aldols is described. Aldol reaction of commercially available l-phenylalaninol derived esters with a variety of bidentate oxyaldehydes proceeded with excellent syn-diastereoselectivities and isolated yields.
Protecting-Group-Free Diastereoselective CC Coupling of 1,3-Glycols and Allyl Acetate through Site-Selective Primary Alcohol Dehydrogenation
作者:Anne-Marie R. Dechert-Schmitt、Daniel C. Schmitt、Michael J. Krische
DOI:10.1002/anie.201209863
日期:2013.3.11
Safe from protection! A pronounced kinetic preference for primaryalcoholdehydrogenation enables the site‐selective iridium catalyzed CCcoupling of polyols with allylacetate in the absence of protecting groups, premetallated reagents, chiral auxiliaries, and discrete alcohol‐to‐aldehyde oxidation.
安全无保护!伯醇脱氢的显着动力学偏好使得在没有保护基团、预金属化试剂、手性助剂和离散醇到醛氧化的情况下,位点选择性铱催化多元醇与乙酸烯丙酯的C C 偶联成为可能。
Chelation-controlled ester-derived titanium enolate aldol reaction: diastereoselective syn-aldols with mono- and bidentate aldehydes
作者:Arun K Ghosh、Jae-Hun Kim
DOI:10.1016/s0040-4039(02)01113-9
日期:2002.8
A chelation-controlled and highly diastereoselective synthesis of syn-aldols is described. Aldol reaction of (S)-valinolderived ester with a variety of aldehydes proceeded with high syn-diastercoselectivities (up to 99:1) and isolated yields (94%). (C) 2002 Elsevier Science Ltd. All rights reserved.
3-Acyltetramic acid antibiotics. 3. An approach to the synthesis of Bu-2313
作者:Robert E. Ireland、Robert B. Wardle
DOI:10.1021/jo00385a024
日期:1987.5
RAO, A. V. RAMA;CHAKRABORTY, T. K.;PURANDARE, A. V., TETRAHEDRON LETT., 31,(1990) N0, C. 1443-1446
作者:RAO, A. V. RAMA、CHAKRABORTY, T. K.、PURANDARE, A. V.