CYCLOADDITION OF PHOSPHAALKYNES TO HIGH-OXIDATION-STATE METAL ALKYLIDENES - SYNTHESIS AND CHARACTERIZATION OF A UNIQUE PHOSPHAMETALLACYCLOBUTENE VIA AN ALKOXIDE LIGAND SHIFT
Gm. Jamison et al., CYCLOADDITION OF PHOSPHAALKYNES TO HIGH-OXIDATION-STATE METAL ALKYLIDENES - SYNTHESIS AND CHARACTERIZATION OF A UNIQUE PHOSPHAMETALLACYCLOBUTENE VIA AN ALKOXIDE LIGAND SHIFT, Organometallics, 15(1), 1996, pp. 16-18
The phosphametallacycle 3, [ArN][RO]Mo=C-(t-Bu)P(OR)C(H)(t-Bu) (Ar = 2
,6-(i-Pr)(2)-C6H3, R = CMe-(CF3)(2)), is formed from the cycloaddition
of tert-butylphosphaacetylene to the high-oxidation-state molybdenum
alkylidene [ArN][RO]Mo-2=C(H)(t-Bu), accompanied by an alkoxide metal-
to-ligand shift. The 1-phospha-3-molybdacyclobut-2-ene has been charac
terized by multinuclear NMR spectroscopy and its molecular structure d
etermined by X-ray crystallographic analysis.