Facile radical decarboxylative alkylation of heteroaromatic bases using carboxylic acids and trivalent iodine compounds
作者:Hideo Togo、Masahiko Aoki、Masataka Yokoyama
DOI:10.1016/0040-4039(91)80221-q
日期:1991.11
easily alkylated by the reaction of carboxylic acids with [bis(trifluoroacetoxy)iodo]benzene or [bis(trifluoroacetoxy)iodo]pentafluorobenzene via radical decarboxylative pathways. This system was further applied to the reaction with tetrahydrofurylcarboxylic acid, 1-(2,3,5-tri-O-benyl)-D-ribofuranosylacetic acid, and 1-(2,3,5-tri-O-benzyl)-D-ribofuranosylcarboxylic acid for the model synthesis of C-nucleosides
羧酸与[双(三氟乙酰氧基)碘]苯或[双(三氟乙酰氧基)碘]五氟苯通过自由基脱羧途径反应,很容易将多种杂芳族碱烷基化。将该体系进一步用于与四氢呋喃基羧酸,1-(2,3,5-三-O-benyl)-D-呋喃呋喃糖基乙酸和1-(2,3,5-三-O-苄基)-的反应。 D-核呋喃糖基羧酸用于C-核苷的模型合成。