7087-77-6Relevant articles and documents
Confinement-Controlled, Eithersyn- oranti-Selective Catalytic Asymmetric Mukaiyama Aldolizations of Propionaldehyde Enolsilanes
Amatov, Tynchtyk,Tsuji, Nobuya,Maji, Rajat,Schreyer, Lucas,Zhou, Hui,Leutzsch, Markus,List, Benjamin
, p. 14475 - 14481 (2021/09/13)
Protected aldols (i.e., true aldols derived from aldehydes) with eithersyn- oranti- stereochemistry are versatile intermediates in many oligopropionate syntheses. Traditional stereoselective approaches to such aldols typically require several nonstrategic
Synthesis of Ynolates via Double Deprotonation of Nonbrominated Esters
Sun, Jun,Yoshiiwa, Toshiya,Iwata, Takayuki,Shindo, Mitsuru
supporting information, p. 6585 - 6588 (2019/09/30)
Herein, we report a double deprotonation method used for the preparation of ynolates starting from nonbrominated 2,6-di-tert-butylphenyl esters. The current method is superior to the previously described double lithium/halogen exchange approach because easily accessible starting materials are used. This method will be especially useful for preparation of ynolates bearing functional groups in organic synthesis.
SN2 Reactions at Tertiary Carbon Centers in Epoxides
Zhang, Yong-Qiang,Poppel, Christina,Panfilova, Anastasia,Bohle, Fabian,Grimme, Stefan,Gans?uer, Andreas
supporting information, p. 9719 - 9722 (2017/08/08)
Described herein is a novel concept for SN2 reactions at tertiary carbon centers in epoxides without activation of the leaving group. Quantum chemical calculations show why SN2 reactions at tertiary carbon centers are proceeding in these systems. The reaction allows flexible synthesis of 1,3-diol building blocks for natural product synthesis with excellent control of the relative and absolute configurations.