Journal of organometallic chemistry

Stereoselective addition reactions of diphenylphosphine to pyridyl and pyrimidylalkynes: chiral 1, 2-diheteroaryl-1, 2-bis (diphenylphosphino) ethanes and their Group …

JL Bookham, DM Smithies

Index: Bookham, Jonathan L.; Smithies, Darren M. Journal of Organometallic Chemistry, 1999 , vol. 577, # 2 p. 305 - 315

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Citation Number: 17

Abstract

The base-catalysed addition of diphenylphosphine to the diarylethynes RC CR′(R= R′= 2-pyridyl 1; R= R′= 3-pyridyl 2; R= 2-pyridyl, R′= 3-pyridyl 3; R= phenyl, R′= 2-pyridyl 4, 3-pyridyl 5, 2-pyrimidyl 6) yield diphosphines of general formula Ph2PCH (R) CH (R′) PPh2 together with alkene by-products Ph2PC (R) CHR′ and HC (R) C (R′) PPh2 in all cases except 1. Selected P, P′-coordinated M (CO) 4 complexes (M= Mo, W) of the ...

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