Safe and facile evolution of diazomethane using the phase-vanishing method
作者:Toshiki Kawabata、Hiroshi Matsubara
DOI:10.1016/j.tetlet.2023.154554
日期:2023.6
Although diazomethane is a useful reagent, it is highly explosive and requires extremely careful handling. Herein, the phase-vanishing (PV) method, in which highly fluorinated solvents are used as a phase screen, was employed to produce diazomethane. An H-shaped reactor bearing two chambers was used. Specifically, diazomethane was gradually evolved under PV conditions in the first chamber and then
尽管重氮甲烷是一种有用的试剂,但它具有很强的爆炸性,需要极其小心地处理。在此,使用高度氟化溶剂作为相屏的相消失 (PV) 方法来生产重氮甲烷。使用带有两个腔室的 H 形反应器。具体而言,重氮甲烷在第一个室中的 PV 条件下逐渐放出,然后通过几个反应在第二个室中消耗,例如羧酸的甲基化。该光伏系统有望能够轻松安全地生成用于有机合成的危险重氮甲烷。
Green Esterification of Carboxylic Acids Promoted by
<i>tert</i>
‐Butyl Nitrite
作者:Yonggao Zheng、Yanwei Zhao、Suyan Tao、Xingxing Li、Xionglve Cheng、Gangzhong Jiang、Xiaobing Wan
DOI:10.1002/ejoc.202100326
日期:2021.5.14
TBN‐catalyzed green esterification of carboxylicacids has been developed, which features a broad range of substrates and excellent functional groups tolerance. The mechanistic study confirmed that the nitrous acid formed in situ in the system is the actual catalyst for this transformation.