UNUSUAL ACTIVATION OF 1,1-DIPHENYL-2-PROPYN-1-OL MEDIATED BY THE OS(ETA(5)-C5H5) UNIT

Authors
CROCHET P ESTERUELAS MA GUTIERREZPUEBLA E
Citation
P. Crochet et al., UNUSUAL ACTIVATION OF 1,1-DIPHENYL-2-PROPYN-1-OL MEDIATED BY THE OS(ETA(5)-C5H5) UNIT, Organometallics, 17(15), 1998, pp. 3141-3142
Citations number
25
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Organometallics → ACNP
ISSN journal
02767333
Volume
17
Issue
15
Year of publication
1998
Pages
3141 - 3142
Database
ISI
SICI code
0276-7333(1998)17:15<3141:UAO1MB>2.0.ZU;2-3
Abstract
Os(eta(5)-C5H5)Cl((PPr3)-Pr-i)(2) (2) reacts with thallium acetate in CH2Cl2 to give Os(eta(5)-C5H5){kappa(1)-OC(O)CH3}((PPr3)-Pr-i)(2) (3). Reaction of the latter with 1,1-diphenyl-2-propyn-1-ol affords the pi -alkyne derivative Os(eta(5)-C5H5){kappa(1)-OC(O)CH3}{eta(2)-HC drop C C(OH)Ph-2}(P-i- Pr-3) (4). In solution, complex 4 is unstable above -4 0 degrees C and rapidly changes into the -{(Z)-3-acetoxy-1-hydroxy-1-p henyl-2-propenyl}aryl complex Os(eta(5)-C5H5){C6H4[C(OH)(Ph)CH drop CH OC(C(O)CH3]}((PPr3)-Pr-i) (5) whose structure was determined by X-ray diffraction. analysis.