La liaison phosphazène dans quelques nouveaux iminophospholanes. Diversité de comportement réactionnel

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Abstract
Using the Staudinger reaction, 12 iminophospholanes with dioxa, oxaza and diaza ring systems were synthesized. No phosphazene bond dimerization was observed with diazaphospholane compounds, whatever the nature of the group on the imino atom. For the tetramethyl dioxaphospholane compounds, the thermal rearrangement occurs with the intracyclic O atom. The reactivity of the phosphazene bond with methanol differs according to the nature of the ring: addition leading to the pentacoordinated species in pinacolic compounds, intermolecular associations (H bonding) in diazaphospholane derivatives. Some of these compounds possess antimitotic activity.].

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