Transformation reactions with cadmium derivatives

Stereospeclflc reactions leading to optically active sugar derivatives. The cadmium salt of the 2-allyloxybenzimidazole derivative reacts with various aldehydes to afford adduct in high regio- and stereoselectivity. Adducts lb are subsequently transformed into trans-vinyloxirane 17... 

Alkenes are well-established to be able to undergo [2+2] photodimerization reactions in the solid state if the double bonds are close enough together, and this can happen in coordination networks. Lang and coworkers showed that both silver and cadmium coordination polymers containing tra v-l,2-bis(4-pyridyl)ethylene (bpe) can undergo photodimerization, in the latter case in a SC-SC transformation. Vittal and coworkers showed that compounds such as [Zn(bpe)(bdc)] formed interpenetrated three-dimensional (3D) networks with the double bonds from the two networks <4 A apart. Following UV irradiation, the compounds were converted into the cyclobutane derivatives in SCSC transformations (equation 15). ... 

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