Add time:08/02/2019         Source:sciencedirect.com

The sterically hindered organogermanium compounds (Me3Si)3CGeR2X (R = Me; X = Cl or I; R = Et, X = Br) have been prepared and their reactions examined. In contrast to the corresponding (Me3Si)3CSiR2X species, the germanium compounds undergo normal (though very slow) direct nucleophilic substitutions at germanium. Thus the iodide (Me3Si)3CGeMe2I reacts with boiling MeOH or, more rapidly, with AgNO3MeOH to give the methoxide (Me3Si)3CGeMe2OMe. The compounds (Me3Si)3CGeR2X with R = Me, X = Cl or R = Et, X = Br do not react at a significant rate with boiling MeOH, but do react with NaOMeMeOH or AgNO3MeOH to give the corresponding methoxides (Me3Si)3CGeR2OMe.

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