Stereoregular Polymerization of Phenylacetylenes Catalyzed by [Hydridotris(pyrazolyl)borato]rhodium(I) Complexes
β Scribed by Katayama, Hiroyuki; Yamamura, Kunihiro; Miyaki, Yoshiharu; Ozawa, Fumiyuki
- Book ID
- 120325354
- Publisher
- American Chemical Society
- Year
- 1997
- Tongue
- English
- Weight
- 183 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0276-7333
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π SIMILAR VOLUMES
## Organorhodium complexes, such as RhH(PPh 3 ) 4 , RhH(CO)(PPh 3 ) 3 , Rh( 3 -C 3 H 4 Ph)(CO)(PPh 3 ) 2 , and RhH(dppe) 2 [dppe = 1,2 -bis(diphenylphosphinoethane)], catalyze polymerization of phenylallene and of 4-methylphenylallene at 60 Β°C. High-molecular-weight polymers (M n > 4Ο« 10 5 ) are i
Chelate complexes of the type [ Rh( q2-0,Z) (PR,),] (Z = CCH,, CCF3, CtBu, S( 0) -p-C&I&H,; PR, = PiPr,, PPhiPr,, PPh,iPr) catalyze the hydrogenation of phenylacetylene in toluene solution at 60Β°C. Selectivities close to 100% are achieved for the hydrogenation of the alkyne to the alkene in the pre