申请人:BCS BUSINESS CONSULTING SERVICES PTE LTD.
公开号:US20160016874A1
公开(公告)日:2016-01-21
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-ethoxy-hept-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.
本文描述了一种通过将3-(5-乙氧已基)环戊烯与二氯酮烯反应合成6-(5-乙氧已基)bicyclo[3.3.0]辛-3-酮的方法。然后将反应产物与乙酸和锌反应,得到4-(5-乙氧已基)bicyclo[3.2.0]庚-6-酮和4-(5-乙氧已基)bicyclo[3.2.0]庚-7-酮,再与三甲基硫铵碘反应,得到2-(5-乙氧已基)螺[双环[3.2.0]庚烷-6,2'-环氧]和4-(5-乙氧已基)螺[双环[3.2.0]庚烷-6,2'-环氧]。最后,将锂碘与2-(5-乙氧已基)螺[双环[3.2.0]庚烷-6,2'-环氧]和4-(5-乙氧已基)螺[双环[3.2.0]庚烷-6,2'-环氧]反应,得到6-(5-乙氧已基)bicyclo[3.3.0]辛-3-酮。文章还描述了一种合成6-(5-甲氧已基)bicyclo[3.3.0]辛-3-酮的方法。