ChemInform Abstract: Transition-Metal Substituted Acylphosphanes and Phosphaalkenes. Part 19. Synthesis and Structure Determination of Cyclic 1-Metallo-1,2- dihydrophosphetes (η5-C5Me5)(CO)2M-PCH(E)-C(E)=C-NMe2 (M: Fe, Ru; E: CO2Me, CN).
Abstract
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ChemInform Abstract
In order to test, whether metallo-phosphaalkenes (III) like metallo- diphosphenes react with electron-deficient alkenes in a (2 + 2) cycloaddition to give metallophosphetanes, the electron-rich compounds (III) are prepared and reacted with fumaric acid derivatives (IV). The results show that the title 1-metallo-1,2-dihydrophosphetes (V) are formed instead of the expected metallophosphetanes. The preparation of (V) from electron-deficient alkenes and phosphaalkenes followed by amine elimination has not been described so far.
