Synthesis, characterization of active Sn(0), and its application in selective propargylation of aldehyde at room temperature in water
作者:Paresh Nath Chatterjee、Dipankar Paul、Micky Lanster Sawkmie、Arun Kumar Sinha、Snehadrinarayan Khatua
DOI:10.1139/cjc-2017-0745
日期:2019.1
synthesized in high yields by the chemical reduction of the blue–black stannous oxide using freshly prepared sodium stannite solution as reducing agent at 40 °C and 60 °C. The Sn(0) particles are characterized using powder XRD, SEM, and DSC. The as-synthesized Sn(0) particles are applied as reagent for the regioselective synthesis of homopropargyl alcohols from propargyl bromide and aldehydes in distilled water
在 40 °C 和 60 °C 下,使用新鲜制备的亚锡酸钠溶液作为还原剂,通过化学还原蓝黑色氧化亚锡,以高产率合成活性 Sn(0) 颗粒。使用粉末 XRD、SEM 和 DSC 对 Sn(0) 颗粒进行表征。合成的 Sn(0) 颗粒用作试剂,用于在室温下在蒸馏水中由炔丙基溴和醛类区域选择性合成高炔丙基醇(产率 50%–84%)。该反应不需要热、微波、超声波、有机助溶剂、助试剂或惰性气氛的帮助。与其他亲电性较低的羰基官能团(如酮、酰胺和羧酸)相比,炔丙基化反应对醛具有高度化学选择性。