Reactions de cycloaddition-1,4 de germylenes cycliques soufres et oxygenes sur divers hetero-1,3 butadienes silicies ou germanies et la 3,5-di t-butylorthoquinone

Article abstract of DOI:10.1016/0022-328X(93)83170-Z

Cycloaddition reactions of 1,2-dithiolane or 1,2-oxathiolanegermanediyls with 3,4-bis(methylene)sila- and germacycloalkanes are reported.Similarly, 3,5-di t-butylorthoquinone undergoes 1,4-cycloaddition with these heterocyclic germylenes.The reactivity of