Organophosphorus compounds. LXXIII. Trapping reaction of in situ generated silene with tert-Bu-C.tplbond.P. Preparation of a diphosphatricyclobenzoheptane.
In: Journal of Organometallic Chemistry, Vol. 464 (1994), No. 1, pp. 41 - 45
Title:
Organophosphorus compounds. LXXIII. Trapping reaction of in situ generated silene with tert-Bu-C.tplbond.P. Preparation of a diphosphatricyclobenzoheptane.
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Year of publication:
1994
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Title in English (abbreviated):
J. Organomet. Chem.
Publisher:
Elsevier B.V.
in:
Vol. 464 (1994), No. 1, pp. 41 - 45
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Abstract:
Silene, R2Si:C(OR)Ph (R = SiMe3 through out this abstr.), can be generated thermally from the disilacyclobutane I by [2 + 2] cycloreversion and trapped by reaction with two equiv. of phosphaalkyne, Me3CC.tplbond.P under formation of the disphosphatricyclobenzoheptane II. Low-temp. x-ray crystal structure anal. of II confirms the result. A plausible reaction mechanism, based above all on cycloaddn. steps and an ene reaction, is presented.