T. Matsumoto et al., FIRST OXAZAGERMETE - SYNTHESIS, STRUCTURE AND THERMAL CYCLOREVERSION INTO A GERMANONE, Chemical communications, (16), 1997, pp. 1553-1554
A novel four-membered ring compound, 1,2,4-oxazagermete, is obtained b
y the reaction of diarylgermylene tbt(tip)Ge: with mesitonitrile oxide
; its thermolysis generates germanone tbt(tip)Ge=O as evidenced by tra
pping reactions with dimethylbutadiene and ethanol.