Described is a method of synthesizing 6-(5-ethoxyhept-1-yl)bicyclo[3.3.0] octan-3-one by reacting 3-(5-ethoxyhept-1-yl) cyclopentene with dichloroketene. The resulting reaction products are reacted with acetic acid and zinc to produce 4-(5-ethoxyhept-1-yl)bicyclo[3.2.0]heptan-6-one and 4-(5-ethoxyhept-1-yl)bicyclo [3.2.0]heptan-7-one, which are reacted with trimethylsulfonium iodide to produce 2-(5-ethoxyhept-1-yl)spiro[bicyclo[3.2.0]heptane-6,2′-oxirane] and 4-(5-ethoxyhept-1-yl)spiro-[bicyclo-[3.2.0]heptane-6,2′-oxirane]. Lithium iodide is reacted with 2-(5-ethoxyhept-1-yl)spiro[bicyclo[3.2.0]heptane-6,2′-oxirane] and 4-(5-ethoxyhept-1-yl)spiro-[bicyclo-[ 3.2.0]heptane-6,2′-oxirane] to produce 6-(5-ethoxyhept-1-yl)bicyclo[3.3.0]octan-3-one. A method of synthesizing 6-(5-methoxyhept-1-yl)bicyclo[3.3.0]octan-3-one is also described.
描述了一种通过 3-(5-乙氧基庚-1-基)
环戊烯与
二氯甲烷反应合成 6-(5-乙氧基庚-1-基)双环[3.3.0]
辛烷-3-酮的方法。反应生成物与
乙酸和
锌反应生成 4-(5-乙氧基庚-1-基)双环[3.2.0]庚-6-酮和 4-(5-乙氧基庚-1-基)双环[3.2.0]
庚烷-7-酮,与
三甲基碘化锍反应生成 2-(5-乙氧基庚-1-基)螺[双环[3.2.0]
庚烷-6,2′-
环氧乙烷]和 4-(5-乙氧基庚-1-基)螺[双环[3.2.0]
庚烷-6,2′-
环氧乙烷]。
碘化
锂与 2-(5-乙氧基庚-1-基)螺[双环[3.2.0]
庚烷-6,2′-
环氧乙烷]和 4-(5-乙氧基庚-1-基)螺[双环[3.2.0]
庚烷-6,2′-
环氧乙烷]反应,生成 6-(5-乙氧基庚-1-基)双环[3.3.0]
辛烷-3-酮。还描述了合成 6-(5-甲氧基庚-1-基)双环[3.3.0]辛-3-酮的方法。