A New method for separating the and isomers of C

Han, A. H.*; Wakahara, Takatsugu*; Maeda, Yutaka*; Akasaka, Takeshi*; Fujitsuka, Mamoru*; Ito, Osamu*; Yamamoto, Kazunori; Kako, Masahiro*; Kobayashi, Kaoru*; Nagase, Shigeru*

New Journal of Chemistry, 33(3), p.497 - 500, 2009/03

https://doi.org/10.1039/B808119K

A new chemical method can be applied to isolate the isomers of C. The photochemical cycloaddition of a mixture of C() and C() with disilirane affords only the mono-adduct of the isomer of C. The counter part (C()) does not give the mono-adduct with disilirane. The isomer itself and the adduct of the isomer of C with disilirane was easily separated by a HPLC procedure. A facile oxidative desilylation of the adduct took place, resulting in the formation of pristine C(). In this context, the separation and the isolation of two isomers of C() and C() were successfully accomplished by using a silylation-oxidative desilylation process.