Palladium-catalysed oxidation of alcohols with carbon tetrachloride, formation of 4,4,4-trichloro ketones from allylic alcohols and carbon tetrachlorid
作者:Hideo nagashima、Koji Sato、Jiro Tsuii
DOI:10.1016/s0040-4020(01)91368-7
日期:1985.1
Pd salts catalyse oxidation of alcohols with CCl4 in the presence of K2CO3. Primary alcohols are oxidised to esters, and secondary alcohols to ketones. CCl4 is converted to CHCl3. The reaction of allylic alcohols bearing a terminal olefinic bond with CCl4 or BrCCl3 in the presence of palladium catalyst at 110° affords 4,4,4-trichloro ketones. At 40°, simple adducts of CCl4 or BrCCl3 having a halohydrin
钯盐在K 2 CO 3的存在下用CCl 4催化醇的氧化。伯醇被氧化成酯,仲醇被氧化成酮。CCl 4转化为CHCl 3。在钯催化剂存在下,带有末端烯烃键的烯丙基醇与CCl 4或BrCCl 3在110°下反应,得到4,4,4-三氯酮。在40°下,获得具有卤代醇结构的CCl 4或BrCCl 3的简单加合物,其通过钯的催化转化为相应的三氯酮。各种卤代醇通过Pd催化转化为酮。