Russian Chemical Bulletin p. 635 - 640 (1994)
Update date:2022-08-31
Topics:
Kostitsyn, A. B.
Ruzek, H.
Heydt, H.
Regitz, M.
Nefedov, O. M.
Cyclopropanecarboxylic acid chlorides 5a-d react with tris(trimethylsilyl)phosphane 6 in benzene at -2 deg C to form cyclopropylcarbonyl-bis(trimethylsilyl)phosphanes 7.These products undergo silylic rearrangement at 25 deg C to yield phosphoalkenes 8.Compounds 8a,b,d are formed as mixtures of Z- and E-isomers where the latter predominante.In the case of 8c, the Z-isomer is formed exclusively. - Key words: phosphaalkenes, cyclopropyl-substituted, E/Z-isomerism.
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