4-(4-Dimethylamino-phenylazo)-benzoic acid (2R,3S,5R)-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-2-trityloxymethyl-tetrahydro-furan-3-yl ester 在
溶剂黄146 作用下,
反应 0.5h,
以55%的产率得到4-(4-Dimethylamino-phenylazo)-benzoic acid (2R,3S,5R)-2-hydroxymethyl-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl ester