Oxidative Cleavage of 4,6-<i>O</i>-Benzylidene Ring with t-Butyl Hydroperoxide and Copper(II) Chloride. Preparation of Methyl 4-<i>O</i>- and 6-<i>O</i>-Benzoylhexopyranoside Derivatives
Copper(II) chloride and palladium(II) acetate were found to be highly effective catalysts for oxidativecleavage of O-benzylidene ring with t-butyl hydroperoxide. Using the former catalyst 4,6-O-benzylidenehexopyranoside derivatives were converted into the corresponding 4- and 6-benzoates in high yields. This reaction was also applicable for conversion of benzyl group into benzoyl one.
发现氯化铜 (II) 和乙酸钯 (II) 是使用叔丁基氢过氧化物氧化裂解 O-亚苄基环的高效催化剂。使用前一种催化剂,4,6-O-亚苄基己基吡喃糖苷衍生物以高产率转化为相应的4-和6-苯甲酸酯。该反应也适用于将苄基转化为苯甲酰基。
65. Walden inversion in the altrose series
作者:George J. Robertson、William Whitehead
DOI:10.1039/jr9400000319
日期:——
Ennor et al., Journal of the Chemical Society, 1958, p. 2921,2924