摘要:
The addition of germatrane, HGe(OCH2-CH2)(3)N (1), to terminal acetylenes is catalyzed by [Cp*RhCl2](2) and yields styrylgermatranes The stereochemistry of the double bond can be controlled by the choice of solvent. In methylene chloride, (E)-beta-styrylgermatranes are the major products, whereas in toluene (Z)-styrylgermatranes are the major products. The addition is also catalyzed by Pd(PPh3)(4), giving (E)-beta-styrylgermatranes regardless of solvent.