Organometallic nitrosyl chemistry. 41. Regiospecific condensation of methyl propiolate with 2,3-dimethyl-2-butene mediated by the electrophilic .eta.5-cyclopentadienyl dinitrosyl tetrafluoroborate salts of the Group 6 metals

Peter Legzdins; George B. Richter-Addo; Frederick W. B. Einstein; Richard H. Jones

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Organometallics

Article . 1990 . Peer-reviewed

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https://dx.doi.org/10.1021/om0...

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Organometallic nitrosyl chemistry. 41. Regiospecific condensation of methyl propiolate with 2,3-dimethyl-2-butene mediated by the electrophilic .eta.5-cyclopentadienyl dinitrosyl tetrafluoroborate salts of the Group 6 metals

descriptionPublicationkeyboard_double_arrow_right Article 01 Feb 1990 English Publisher:American Chemical Society (ACS)Journal:Organometallics, volume 9, pages 431-439 (issn: 0276-7333, eissn: 1520-6041,

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Authors: Peter Legzdins; George B. Richter-Addo; Frederick W. B. Einstein; Richard H. Jones;

doi: 10.1021/om00116a020

Organometallic nitrosyl chemistry. 41. Regiospecific condensation of methyl propiolate with 2,3-dimethyl-2-butene mediated by the electrophilic .eta.5-cyclopentadienyl dinitrosyl tetrafluoroborate salts of the Group 6 metals

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Abstract

Chloride abstraction from Cp'M(NO) 2 Cl (Cp'=Cp(η 5 -C 5 H 5 ), Cp * (η 5 -C 5 Me 5 ); M=Cr, Mo, W) with an equimolar amount of AgBF 4 in CH 2 Cl 2 generates reactive solutions of Cp'M(NO) 2 BF 4 . During their reactions with various nucleophiles, the Cp'M(NO) 2 BF 4 compounds behave as though they are the formally 16-electron cations Cp'M(NO) 2 + . Thus, all the CpM(NO) 2 BF 4 complexes abstract a phenyl group from the BPh 4 − anion to form the known CpM(NO) 2 Ph compounds, and CpW(NO) 2 BF 4 catalyzes the oligomerization of 2-methylpropene

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