Organoelement Compounds
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ChemInform Abstract: Et3B-Induced Stereoselective Radical Addition of Ph3GeH to Acetylenes and Its Application to Isomerization of Olefins.
First published: January 12, 1988
Abstract
The acetylenes (I) are coupled with triphenylgermane (II) in the presence of triethylboron to give the alkenylgermanes (III).
ChemInform Abstract
The acetylenes (I) are coupled with triphenylgermane (II) in the presence of triethylboron to give the alkenylgermanes (III). In general, the Z-isomers predominate. However, at higher temperatures, isomerization of Z-(III), yielding E-(III) is observed. The Z-olefins (IV) are converted to the corresponding E-isomers upon heating with (II) and triethylboron due to an addition-elimination sequence.
