An Efficient One-Pot Synthesis of Oxime Ethers from Alcohols Using Triphenylphosphine/Carbon Tetrachloride
作者:Mohammad Soltani Rad、Ali Khalafi-Nezhad、Fatemeh Karimitabar、Somayeh Behrouz
DOI:10.1055/s-0029-1218711
日期:2010.5
A convenient and efficient one-pot O-alkylation of oximes from alcohols using triphenylphosphine in carbon tetrachloride is described. In this method, treatment of alcohols with a mixture of triphenylphosphine, carbon tetrachloride, oxime, and DBU in the presence of catalytic amounts of tetrabutylammonium iodide in refluxing acetonitrile regioselectively furnishes the corresponding O-alkyl ethers in
描述了在三氯化碳中使用三苯基膦方便有效地从醇中进行肟的一锅O-烷基化。在这种方法中,在回流的乙腈中,在催化量的碘化四丁铵存在下,用三苯基膦,四氯化碳,肟和DBU的混合物处理醇,可以高收率提供相应的O-烷基醚。该方法是用各种结构多样的醇对肟进行高效的O-烷基化。对于不对称肟醚的半经验量子力学计算(AM1)表明Z异构体的形成热较低。 肟-醇-O-烷基化-三苯基膦-四氯化碳-DBU