The reaction of Pt(η 2 -C 2 H 4 )(PPh 3 ) 2 (1) with HPh 2 Ge(SiMe 2 ) n GePh 2 H (2; n ) 0-3) initially forms the hydrido(germyl 3), followed by the generation of the cyclic bis(germyl)platinum complex Pt[GePh 2 -(SiMe 2 ) n GePh 2 ](PPh 3 ) 2 ( 4) and finally formation of a dinuclear platinum complex with bridging diphenylgermyl ligands containing a Pt-Pt bond, [Pt(µ-GePh 2 )-(PPh 3 )] 2 (5). The structures of 4 (n ) 2) and 5 were determined by X-ray crystallography.

No abstract

No abstract

Pd-Catalyzed Allylic Alkylation of Phenylvinylcarbinols with SomeNucleophiles.-The allylic alkylation reaction between phenylvinylcarbinols (I) and the CH-acidic compounds (II) is most effectively catalyzed by Pd(PPh3) 4. The methodology provides as well an efficient preparation of key intermediates (V) for the synthesis of estrogenic compounds.-(SAKAKIBARA, M.; OGAWA, A.; Tetrahedron Lett. 35 (1994) 43, 8013-8014;

No abstract