ISSN:
0009-2940
Keywords:
Molybdenum complexes
;
Rearrangements, metal-induced, base-catalyzed
;
Isomerizations, 2-propynyl-allenyl
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Metal-Induced and Base-Catalyzed 2-Propynyl-Allenyl Rearrangement in [(HC≡CCH2)(2,4,6-tBu3C6H2O)]P=MoCP(CO)2The synthesis and reactivity of [(HC≡CCH2)(2,4,6-tBu31-C6H2O)]P=MoCp(CO)2 (3) is described. [(HC≡CCH2)(R)]PCl (1) reacts with NaMoCp(CO)3 (2) to afford the s̰3,λ41-phosphanediyl compounds 3. With NEt3 a prototropic rearrangement of the 2-propynyl ligand of 3 to an allenyl group in [(H2C=C=CH)(R)]P=MoCp(CO)2 (5) is observed. However, with Cr(CO)5 · THF a metal-induced rearrangement of the 2-propynyl unit in 3 yields η3-{(2,4,6-tBu3C6H2O)[(CO)5Cr]PCHC=CH2}MoCp(CO)2 (7). Complex 7 contains a 1-phosphaallyl system, which is functionalized by an exocyclic CC double bond X-ray structure analyses of 3 and 7 are performed.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19931260503
