Patent ID: 8410314

Claim:
A method of synthesizing a compound, the method comprising: reacting 3-(5-ethoxyhept-1-yl)cyclopentene with dichloroketene to form a first mixture comprising 7,7-dichloro-4-(5-ethoxyhept-1-yl)bicyclo[3.2.0]heptan-6-one and 6,6-dichloro-4-(5-eth-oxyhept-1-yl)bicyclo[3.2.0]heptan-7-one; reacting the first mixture with acetic acid and zinc to form a second mixture comprising 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; reacting the second mixture with trimethylsulfonium iodide to form a third mixture comprising 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]; and reacting the third mixture with lithium iodide to form 6-(5-ethoxyhept-1-yl)bicyclo[3.3.0]octan-3-one.