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• W2067647218 endingPage "4477" @default.
• W2067647218 startingPage "4462" @default.
• W2067647218 abstract "The synthesis of monodentate and bidentate phosphinite ligands, possessing the unusual bicyclo[3.2.0]heptane framework, are reported. A convenient, tin-free synthesis of a key intermediate, namely 3-endo-6-endo-dihydroxybicyclo[3.2.0]heptane, is described. The air-sensitive phosphinite ligand 1 was either protected as the borane adduct, which is air-stable, or reacted directly with bis(acetonitrile)palladium(II)chloride to give the novel air and moisture stable palladium(II) complex 11. A platinum(II) relative 12 has also been synthesised by reaction of phosphinite 1 with bis(benzonitrile)platinum(II)chloride. Each complex has been thoroughly characterised and their molecular structures confirmed by X-ray diffraction studies. In catalytic applications, such as cross-coupling reactions of organometallic reagents with organohalides, an unexpectedly poor activity has been established for 11. For example, Suzuki–Miyaura cross-coupling of activated and deactivated aryl bromides with aryl boronic acids, in the presence of catalytic quantities of 11, proceed in low yield, accompanied by substantial homocoupling. Palladium agglomeration, to produce catalytically inactive Pd black, is rapid in these reactions, under both aqueous and non-aqueous conditions. The poor reactivity is proposed to arise through an unfavourable near tetrahedral ‘(PP′)Pd(0)’ geometry, which slows the oxidative addition step in the catalytic cycle with either activated or deactivated aryl halides. The steric bulk of the ligand and the associated large P–M–P′ bite angle, particularly at the palladium zero oxidation state, is proposed to account for the poor reactivity. However, we have established that cationic derivatives of 11 promote the cycloisomerisation of diallylmalonate in a regioselective fashion." @default.
• W2067647218 created "2016-06-24" @default.
• W2067647218 creator A5005939815 @default.
• W2067647218 creator A5017883024 @default.
• W2067647218 creator A5044177311 @default.
• W2067647218 creator A5045165283 @default.
• W2067647218 creator A5072671518 @default.
• W2067647218 creator A5080429069 @default.
• W2067647218 date "2005-10-01" @default.
• W2067647218 modified "2023-09-26" @default.
• W2067647218 title "Synthesis of Pd(II) and Pt(II) complexes possessing bicyclo[3.2.0]heptanyl phosphinite ligands: Identification of a novel Pd(II) precatalyst for 1,6-diene cycloisomerisation" @default.
• W2067647218 cites W1948768778 @default.
• W2067647218 cites W1966137197 @default.
• W2067647218 cites W1968663877 @default.
• W2067647218 cites W1973051136 @default.
• W2067647218 cites W1975398423 @default.
• W2067647218 cites W1977188644 @default.
• W2067647218 cites W1977820905 @default.
• W2067647218 cites W1978890358 @default.
• W2067647218 cites W1979835336 @default.
• W2067647218 cites W1980382994 @default.
• W2067647218 cites W1980501701 @default.
• W2067647218 cites W1980648290 @default.
• W2067647218 cites W1981389626 @default.
• W2067647218 cites W1981886062 @default.
• W2067647218 cites W1985467568 @default.
• W2067647218 cites W1993908374 @default.
• W2067647218 cites W1994080929 @default.
• W2067647218 cites W1995125797 @default.
• W2067647218 cites W1996899052 @default.
• W2067647218 cites W1997159316 @default.
• W2067647218 cites W1998658192 @default.
• W2067647218 cites W1999027139 @default.
• W2067647218 cites W1999537176 @default.
• W2067647218 cites W2000928844 @default.
• W2067647218 cites W2006438452 @default.
• W2067647218 cites W2011701048 @default.
• W2067647218 cites W2012984179 @default.
• W2067647218 cites W2013005162 @default.
• W2067647218 cites W2013305684 @default.
• W2067647218 cites W2013951947 @default.
• W2067647218 cites W2014060285 @default.
• W2067647218 cites W2016257288 @default.
• W2067647218 cites W2020931127 @default.
• W2067647218 cites W2023354395 @default.
• W2067647218 cites W2025335451 @default.
• W2067647218 cites W2025392130 @default.
• W2067647218 cites W2034001271 @default.
• W2067647218 cites W2040949588 @default.
• W2067647218 cites W2044986525 @default.
• W2067647218 cites W2046548955 @default.
• W2067647218 cites W2050907760 @default.
• W2067647218 cites W2052436890 @default.
• W2067647218 cites W2054059411 @default.
• W2067647218 cites W2055753132 @default.
• W2067647218 cites W2061341156 @default.
• W2067647218 cites W2061776255 @default.
• W2067647218 cites W2073030388 @default.
• W2067647218 cites W2079174847 @default.
• W2067647218 cites W2083042257 @default.
• W2067647218 cites W2084049297 @default.
• W2067647218 cites W2088771058 @default.
• W2067647218 cites W2089621246 @default.
• W2067647218 cites W2092336917 @default.
• W2067647218 cites W2095731264 @default.
• W2067647218 cites W2100831848 @default.
• W2067647218 cites W2110264547 @default.
• W2067647218 cites W2111473115 @default.
• W2067647218 cites W2113730087 @default.
• W2067647218 cites W2114244386 @default.
• W2067647218 cites W2120080269 @default.
• W2067647218 cites W2121634514 @default.
• W2067647218 cites W2130803799 @default.
• W2067647218 cites W2134144045 @default.
• W2067647218 cites W2137710377 @default.
• W2067647218 cites W2138674119 @default.
• W2067647218 cites W2140230161 @default.
• W2067647218 cites W2143856302 @default.
• W2067647218 cites W2144292976 @default.
• W2067647218 cites W2144742318 @default.
• W2067647218 cites W2150268939 @default.
• W2067647218 cites W2151160531 @default.
• W2067647218 cites W2157116970 @default.
• W2067647218 cites W2163256558 @default.
• W2067647218 cites W2165412289 @default.
• W2067647218 cites W2173813006 @default.
• W2067647218 cites W2174789484 @default.
• W2067647218 cites W2176312596 @default.
• W2067647218 cites W230878830 @default.
• W2067647218 cites W2313554356 @default.
• W2067647218 cites W2319900189 @default.
• W2067647218 cites W2949235502 @default.
• W2067647218 cites W2949303735 @default.
• W2067647218 cites W2949484447 @default.
• W2067647218 cites W2949911682 @default.
• W2067647218 cites W2950833715 @default.
• W2067647218 cites W2950929204 @default.
• W2067647218 cites W2951352164 @default.

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