In situ generation of hydroperoxide by oxidation of benzhydrols to benzophenones using sodium hydride under oxygen atmosphere: use for the oxidative cleavage of cyclic 1,2-diketones to dicarboxylic acids
作者:Sunhae Kang、Soyoung Lee、Minju Jeon、Sun Min Kim、Young Sug Kim、Hogyu Han、Jung Woon Yang
DOI:10.1016/j.tetlet.2012.10.127
日期:2013.1
A facile oxidative cleavage of cyclic 1,2-diketones 1 to dicarboxylic acids 3 with hydroperoxide generated in situ has been developed. In situ generation of hydroperoxide was effected by the oxidation of 4,4′-dichlorobenzhydrol 2f to 4,4′-dichlorobenzophenone 4f using sodiumhydride under oxygen atmosphere.
The first organocatalytic aerobic oxidative cleavage of cyclic 1,2-diketones is reported. The reaction occurs in either aqueous or alcoholic media and is promoted by a simple N-heterocyclic carbene catalyst derived from a 1,2,4-triazolium ion. No strong oxidants are required. The application of the process in a one-pot synthesis of a cyclic anhydride is also possible.
Graebe; Gnehm, Chemische Berichte, 1902, vol. 35, p. 2745
作者:Graebe、Gnehm
DOI:——
日期:——
Graebe; Gnehm, Justus Liebigs Annalen der Chemie, 1904, vol. 335, p. 118
作者:Graebe、Gnehm
DOI:——
日期:——
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