Journal of Organometallic Chemistry p. 267 - 283 (1989)
Update date:2022-09-26
Topics:
Deacon
Gatehouse
Nelson-Reed
The complexes, PtCl(diene)R (diene = hexa-1,5-diene (hex) or norbornadiene (nbd), R C6F5, p-HC6F4, or p-MeOC6F4; diene = diene = dicyclopentadiene (dcy), R = C6F5) have been prepared by reaction between equimolar amounts of PtCl2(diene) and Me3SnR in dichloromethane. Most reactions also gave some of the corresponding PtR2(diene) complex, which was readily separated by chromatography, and Pt(p-MeOC6F4)2(nbd) was obtained in high yield from PtCl2(nbd) and Me3Sn(p-MeOC6F4) when a 1 2 mole ratio was used. Attempts to prepare PtCl(dcy)R (R p-HC6F4 or p-MeOC6F4) from Me3SnR gave only PtR2(dcy) in boiling CH2Cl2 despite the use of 1 1 reactant stoichiometry, and Pt(p-MeOC6F4)2(dcy) or no reaction (R p-HC6F4) at room temperature. Alternative reagents, R′3 SnR (R′ Bu or Et, R C6F5 or p-MeOC6F4) had a variable effect on the selectivity of monoarylation. Thus, Bu3SnC6F5 was more selective and Et3SnC6F5 less selective in formation of PtCl(hex)C6F5 than Me3SnC6F5. With Et3SnR (R C6F5 or p-MeOC6F4) and an equimolar amount of PtCl2(dcy), PtCl(dcy)R was the major product. The crystal structure of ptCl(dcy)C6F5 shows near square planar stereochemistry for platinum and steric congestion. The double bond from the six-membered ring of dcy is unsymmetrically coordinated to platinum trans to C6F5 and is further from the metal than the other double bond, which is symmetrically bonded trans to chlorine. The pentafluorophenyl group is approximately normal to the coordination plane, and gives two ortho-fluorine resonances in the 19F NMR spectrum.
View MoreContact:13120882795;+86-21-34621078;+86-021-31122318
Address:Suite 2,No.2715 Longwu Road
SuZhou Bichal Biological Technology CO.,LTD
Contact:+86-512-68051130
Address:NO.32 huoju road HI-TECH Industrial development zone SuZhou China
Jinan Decheng Hemu Medical Technology Co.,Ltd.
Contact:+86-531-68650525
Address:NO.554 Zhengfeng Road High-new Technology Development Zone
Shanghai Sunway Pharmaceutical Technology Co.,Ltd.
Contact:+86-21-5161 3915
Address:Shanghai YangPu
Shenzhen ZheYi Chemicals Co.,LTD(Shanghai Branch)
Contact:+86-21-54159691
Address:Room1002,Building No.2, Lane 98 Bixiu Road,Minhang District, Shanghai,China 201100
Doi:10.1021/ol101865e
(2010)Doi:10.1039/b925837j
(2010)Doi:10.1021/ja00158a056
(1990)Doi:10.1055/s-1989-27189
(1989)Doi:10.1016/S0040-4039(00)99554-6
(1989)Doi:10.1016/j.tet.2010.03.062
(2010)