3-(Trichlorogermyl)propanoic acid (1a) reacts with phenylmagnesium bromide in molar ratio 1:4 to give 3-(triphenylgermyl)propanoic acid (2a). In the compounds 1a and 2a the β-carboxylic functional group shows some unusual properties when they react with excess of phenylmagnesium bromide. The compound 1a reacts with phenylmagnesium bromide in molar ratio 1:5 to give phenyl 2-(triphenylgermyl)ethylketone (3a) and in molar ratio 1:6 to give 1,1-diphenyl-3–(triphenylgermyl)propanol (4a). The compound 2a reacts with phenylmagnesium bromide in molar ratio 1:2 to give 3a and in molar ratio 1:3 to give 4a also. Dehydration of the compound 4a with dilute hydrochloric acid seems especially easy. Moreover, the compound la reacted with phenylmagnesium bromide in molar ratio 1:6, then the mixture was treated with dilute hydrochloric acid to give 1,1-diphenyl-3 (triphenylgermyl)-1-propene (5a) in one pot reaction. Alkyl Ge–C bond in the compound 5a can be cleaved selectively by lithium aluminium hydride (LiAlH₄) in good yield.

中文翻译：

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3-（三氯锗烷基）丙酸和3-（三苯基锗烷基）丙酸的合成与反应性

3-（三氯锗烷基）丙酸（1a）与苯基溴化镁以1∶4的摩尔比反应，得到3-（三苯基锗烷基）丙酸（2a）。在化合物1a和2a中，β当羧基羧酸官能团与过量的苯基溴化镁反应时，它们显示出一些不同寻常的性质。化合物1a与苯基溴化镁以1：5的摩尔比反应，生成苯基2-（三苯基锗基）乙基酮（3a），以1：6的摩尔比生成1,1-二苯基-3–（三苯基锗基）丙醇（4a）。化合物2a与苯基溴化镁以摩尔比1∶2反应得到3a，并且以摩尔比1∶3反应也得到4a。用稀盐酸使化合物4a脱水似乎特别容易。此外，化合物1a与苯基溴化镁以1∶6的摩尔比反应，然后将混合物用稀盐酸处理，在一次反应中得到1，1-二苯基-3（三苯基锗烷基）-1-丙烯（5a）。化合物5a中的烷基Ge–C键可以被氢化铝锂（LiAlH₄）收率好。