New orthopalladated complexes of phosphorus ylides: Crystal structure of [Pd{CH{P(C7H6)(p-tolyl)2}COCH3}Cl{P(p-tolyl)3}]

This work reports on the preparation of the complexes [PdCl2(Y1)2], [PdCl2(Y2)2] (Y1 = (p-tolyl)3PCHCOCH3 (1a); Y2 = Ph3PCHCO2CH2Ph (1b)), [Pd{CHP(C7H6)(p-tolyl)2COCH3}(μ-Cl)]2 (2a), [Pd{CHP(C6H4)Ph2CO2CH2Ph}(μ-Cl)]2 (2b), [Pd{CH{P(C7H6)(p-tolyl)2}COCH3}Cl(L)] (L = PPh3 (3a), P(p-tolyl)3 (4a)) and [Pd{CH{P(C6H4)Ph2}CO2CH2Ph}Cl(L)] (L = PPh3 (3b), P(p-tolyl)3 (4b)). Orthometallation and ylide C-coordination in complexes 2a–4b are demonstrated by an X-ray diffraction study of 4a.

Graphical abstractOrthopalladation and C-coordination of the phosphorus ylide (p-tolyl)3PCHCOCH3 is demonstrated by the X-ray crystal structure of [Pd{CH{P(C7H6)(p-tolyl)2}COCH3}ClP(p-tolyl)3].Figure optionsDownload full-size imageDownload as PowerPoint slide