cyclohexanone, 1,6-anhydro-3,4-dideoxy-4-C-(2-oxocyclohexan-1-yl)-β-D-erythrohexo-2-ulose, was treated with ethylene glycol in the presence of oxalic acid, and the resulting mixed ketal, 2-(4a′S,6a′S,10a′R,10b′R)-octahydrospiro[1,3-dioxolane-2,2′-pyrano[2,3-c]chromen]-6a′(1′H)-yloxy}ethanol, was used a chiral auxiliary in the synthesis of vicinal diols.
摘要 在
乙二醇溶液中,用
乙二醇处理左
葡萄糖葡萄糖酮和
环己酮的迈克尔加成物,1,6-脱
水-3,4-二脱氧-4- C-(2-氧代环己-1-基)-β-D-赤藓基-2-ulose。
草酸的存在,且将所得混合
缩酮,2 - (4A'小号,6A'小号,10A' - [R,10B' - [R)-octahydrospiro [
1,3-二氧戊环-2,2'-
吡喃并[2,3 -c ] chromen] -6a'(1'H)-酰氧基}
乙醇被用于手性二元醇的合成中。