1239866-50-2Relevant academic research and scientific papers
Hydroalumination of dialkynylgermanes - Synthesis of alkenyl- alkynylgermanes with intramolecular aluminium-carbon interactions
Uhl, Werner,Rohling, Martina,K?sters, Jutta
, p. 1630 - 1636 (2010/10/04)
Reactions of dialkylaluminium hydrides, R2AlH [R = CH 2CMe3, CMe3, CH(SiMe3)2], with di(phenylethynyl)germanes, R2Ge(CC-C6H 5)2 [R = CH3 (1), C6H5 (2)], afforded mixed alkenyl-alkynylgermanes, R2Ge(CC-C 6H5)[C(AlR2)C(H)-C6H5] (3 to 7), by hydroalumination of one of the CC triple bonds. In all cases the cis-arrangement of the Al and H atoms across the resulting CC double bond was observed. Crystal structure determinations revealed relatively strong intramolecular bonding interactions between the coordinatively-unsaturated aluminium atoms and the α-carbon atoms of the intact triple bonds bearing a partial negative charge. This interaction is only prevented by application of the very bulky bis(trimethylsilyl)methyl substituent.
