[EN] NOVEL COMPOUNDS AND PHARMACEUTICAL COMPOSITIONS THEREOF FOR THE TREATMENT OF DISEASES [FR] NOUVEAUX COMPOSÉS ET COMPOSITIONS PHARMACEUTIQUES ASSOCIÉES POUR LE TRAITEMENT DE MALADIES
Efficient Decarboxylative/Defluorinative Alkylation for the Synthesis of
<scp>
<i>gem</i>
‐Difluoroalkenes
</scp>
through an
<scp>
S
<sub>N</sub>
2
</scp>
’‐Type Route
作者:Wei‐Long Xing、Jia‐Xin Wang、Ming‐Chen Fu、Yao Fu
DOI:10.1002/cjoc.202100709
日期:2022.2
An efficientdecarboxylative/defluorinativealkylation for synthesizing gem-difluoroalkenes is described, providing a general method for installation of the challenging alkyl fragments containing α-electron-withdrawing groups into α-trifluoromethyl alkenes. Mechanistic studies suggest that this process involves an SN2′-type synthetic route in the absence of transition-metal catalysts or photocatalysis
描述了一种用于合成偕二氟烯烃的有效脱羧/脱氟烷基化反应,为将含有 α-吸电子基团的具有挑战性的烷基片段安装到 α-三氟甲基烯烃中提供了一种通用方法。机理研究表明,该过程涉及在没有过渡金属催化剂或光催化的情况下的 S N 2' 型合成路线。此外,该协议可以很容易地扩大规模,并成功应用于生物活性分子的修饰,从而补充了获得结构通用的gem-二氟烯烃的方法。
Copper Catalyzed Decarboxylative Alkynylation of Quaternary α-Cyano Acetate Salts
Cu-catalyzed decarboxylative alkynylation of quaternary a-cyano acetate salts with alkynyl bromides and alkynyl chlorides is described. This new reaction can be used for preparing functionalized butynenitrile derivatives.