Synthesis of Nitrile‐Bearing Quaternary Centers by an Equilibrium‐Driven Transnitrilation and Anion‐Relay Strategy
作者:Sébastien Alazet、Michael S. West、Purvish Patel、Sophie A. L. Rousseaux
DOI:10.1002/anie.201903215
日期:2019.7.22
preparation of nitrile‐containing building blocks is of interest due to their utility as synthetic intermediates and their prevalence in pharmaceuticals. As a result, significant efforts have been made to develop methods to access these motifs which rely on safer and non‐toxic sources of CN. Herein, we report that 2‐methyl‐2‐phenylpropanenitrile is an efficient, non‐toxic, electrophilic CN source for
Odorless Diphenyl Diselenide and Disulfide: Syntheses and Applications
作者:Manabu Node、Pranab K. Patra、Kandasamy Shanmugasundaram、Manabu Matoba、Kiyoharu Nishide、Tetsuya Kajimoto
DOI:10.1055/s-2004-837289
日期:——
Bis[4-(trimethylsilyl)phenyl]diselenide (3) and bis[4-(trimethylsilyl)phenyl]disulfide (31) are found to be odorless equivalents of the commonly used diphenyl diselenide and diphenyldisulfide, respectively. The diselenide 3 is shown to be useful in the preparation of odorless selenium(II) chloride 26 and selenium(IV) trichloride 28 that follow similar reactivity patterns to their phenyl derivatives and
双[4-(三甲基甲硅烷基)苯基]二硒化物(3)和双[4-(三甲基甲硅烷基)苯基]二硫化物(31)分别是常用的二苯基二硒化物和二苯基二硫化物的无味等效物。二硒化物 3 可用于制备无味的氯化硒 (II) 26 和三氯化硒 (IV) 28,它们的反应模式与其苯基衍生物相似,并且可以在干燥条件下冷藏储存。相应的溴化硒 (II) 必须在使用前从 3 新鲜制备。还表明硫化物产物中的三甲基甲硅烷基可以使用 TFA 定量地进行原甲硅烷基化。
YOKOYAMA, MASATAKA;OHTEKI, HIROKO;KURAUCHI, MASAHIKO;HOSHI, KAZUKO;YANAGI+, J. CHEM. SOC. PERKIN TRANS., 1984, N 11, 2635-2640