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Abstract
Synthesis of cyclic germanium derivatives of salicylic and thiosalicylic acid are described by two different ways. These derivatives are characterized by NMR and mass spectrometry. Their thermal decomposition is studied.
Exchange reactions between these derivatives and GeCl4 and GeCl2 lead to spirogermanium compounds and new stable germylenes characterized by cycloaddition with dimethyl butadiene and di-t-butyl o-quinone.
Cyclic germanium derivatives of α-hydroxyacids also lead to spirogermanium compound and cyclic germylene by reaction respectively with GeCl4 and GeCl2.