Synthesis of Bridged 1,3,2λ3,4λ3-Diazadiphosphetidines

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Abstract

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The geometrical isomers of PN four-membered ring derivatives, e.g. (MeO—PN—tBu)2, are characterized by exceptionally large differences in their 31P-NMR shifts. In connection with attempts to establish the reason for these differences the novel heterocycles (1) and (2), n = 2 or 3, have now been synthesized.

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