申请人:Itoh Hisanori
公开号:US20110082308A1
公开(公告)日:2011-04-07
Provided is a process in which cyclization of a compound having, in a molecule, a formyl group and a double bond which allow carbonyl-ene cyclization, the compound existing as a mixture of optical isomers thereof, increases the ratio of a particular optical isomer not only in a cyclized compound, but also in an unreacted compound. The process comprises performing, in the presence of a specified aluminum complex represented by the general formula: [Al
2
(L
1
)
n
(L
2
)
3-m
]
m
, cyclization of a compound having, in a molecule, a formyl group and a double bond which allow carbonyl-ene cyclization, the compound existing as a mixture of optical isomers thereof, to increase the ratio of a particular optical isomer.
提供的是一种过程,在分子中具有甲酰基和双键的化合物进行环化反应,从而允许羰基-烯环化反应,该化合物存在其光学异构体的混合物中,不仅可以增加环化后化合物中特定光学异构体的比例,还可以增加未反应化合物中特定光学异构体的比例。该过程包括在指定的铝配合物存在下进行环化反应,该铝配合物由通式[Al2(L1)n(L2)3-m]m表示,化合物在分子中具有甲酰基和双键,允许羰基-烯环化反应,化合物存在其光学异构体的混合物中,以增加特定光学异构体的比例。