The direct Cα−Cβ cleavage of allylicalcohols under mild aerobic conditions is presented. The method constitutes a special case of the Mukaiyama hydration reaction, where the presence of a free hydroxyl group in the nearby carbon alters the fate of the reaction leading to the oxidative braking of Cα−Cβ bond. A broad selection of allylicalcohols has been examined and found to deliver useful for further
提出了在温和有氧条件下烯丙醇的直接 C α -C β裂解。该方法构成了 Mukaiyama 水合反应的一个特例,其中附近碳中游离羟基的存在改变了反应的命运,导致 C α -C β键的氧化断裂。多种烯丙醇经过检验,发现可用于进一步功能化产品,且收率良好至优异。初步的机理研究使我们能够提出一条可能导致碎片产物的合理途径。
v. Braun; Werner, Chemische Berichte, 1929, vol. 62, p. 1054
作者:v. Braun、Werner
DOI:——
日期:——
KULESZA J.; SIKORA M., 7 INT. CONGR. ESSENTIAL OILS, KYOTO, 1977, S. L., 1979, 272
作者:KULESZA J.、 SIKORA M.
DOI:——
日期:——
OZONOLYSIS REACTIONS IN LIQUID CO2 AND CO2-EXPANDED SOLVENTS
申请人:University Of Kansas
公开号:EP2209547A2
公开(公告)日:2010-07-28
Ozonolysis Reactions in Liquid CO2 and CO2-Expanded Solvents
申请人:UNIVERSITY OF KANSAS
公开号:US20130240781A1
公开(公告)日:2013-09-19
A method for increasing ozone concentration in a liquid can include: providing a gas having ozone; introducing the ozone-containing gas into a liquid, wherein the liquid and ozone combination has a temperature between about 0.8 and about 1.5 times the critical temperature of ozone; and increasing isothermally, the pressure of the ozone-containing gas above the liquid to about 0.3 to about 5 times the critical pressure of ozone so as to increase the ozone concentration in the liquid. The temperature is expressed in absolute units (Kelvin or Rankin). The method can be used for removing ozone from a gas or for purifying ozone. The liquid having a high ozone concentration can be used for ozonolysis of a substrate.