Transalkynylation and catalytic demercuration of bis(alkynyl)mercurials: Two alternative mechanisms

RB Bedford; AF Hill; AR Thompsett; AJP White; DJ Williams

doi:10.1039/cc9960001059

Transalkynylation and catalytic demercuration of bis(alkynyl)mercurials: Two alternative mechanisms

RB Bedford, AF Hill, AR Thompsett, AJP White, DJ Williams

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44 Citations (Scopus)

Abstract

The complexes [RhCl(CO)(PPh₃)₂] and [MHCl(CO)(PPh₃)₃] (M = Ru, Os) catalyse the demercuration of [Hg(C≡CR)₂] (R = Ph, C₆H₄Me-4, Buⁿ) to provide buta-1,3-diynes, however the reactions proceed by quite different mechanisms as indicated by (i) the isolation of [Ru{C(C≡CR)= CHR}Cl(CO)(PPh₃)₂] and its reintroduction into the catalytic cycle and (ii) the isolation of the iridium complex [IrCl(C≡CR)(HgC≡CR)-(CO)(PPh₃)₂].

Original language	English
Pages (from-to)	1059-1060
Number of pages	2
Journal	Chemical Communications
Issue number	9
DOIs	https://doi.org/10.1039/cc9960001059
Publication status	Published - 1996
Externally published	Yes

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title = "Transalkynylation and catalytic demercuration of bis(alkynyl)mercurials: Two alternative mechanisms",

abstract = "The complexes [RhCl(CO)(PPh3)2] and [MHCl(CO)(PPh3)3] (M = Ru, Os) catalyse the demercuration of [Hg(C≡CR)2] (R = Ph, C6H4Me-4, Bun) to provide buta-1,3-diynes, however the reactions proceed by quite different mechanisms as indicated by (i) the isolation of [Ru\{C(C≡CR)= CHR\}Cl(CO)(PPh3)2] and its reintroduction into the catalytic cycle and (ii) the isolation of the iridium complex [IrCl(C≡CR)(HgC≡CR)-(CO)(PPh3)2].",

keywords = "Diyne coordination chemistry, Ruclh(co)(pph3)3",

author = "RB Bedford and AF Hill and AR Thompsett and AJP White and DJ Williams",

year = "1996",

doi = "10.1039/cc9960001059",

language = "English",

pages = "1059--1060",

journal = "Chemical Communications",

issn = "1359-7345",

publisher = "Royal Society of Chemistry",

number = "9",

}

TY - JOUR

T1 - Transalkynylation and catalytic demercuration of bis(alkynyl)mercurials

T2 - Two alternative mechanisms

AU - Bedford, RB

AU - Hill, AF

AU - Thompsett, AR

AU - White, AJP

AU - Williams, DJ

PY - 1996

Y1 - 1996

N2 - The complexes [RhCl(CO)(PPh3)2] and [MHCl(CO)(PPh3)3] (M = Ru, Os) catalyse the demercuration of [Hg(C≡CR)2] (R = Ph, C6H4Me-4, Bun) to provide buta-1,3-diynes, however the reactions proceed by quite different mechanisms as indicated by (i) the isolation of [Ru{C(C≡CR)= CHR}Cl(CO)(PPh3)2] and its reintroduction into the catalytic cycle and (ii) the isolation of the iridium complex [IrCl(C≡CR)(HgC≡CR)-(CO)(PPh3)2].

AB - The complexes [RhCl(CO)(PPh3)2] and [MHCl(CO)(PPh3)3] (M = Ru, Os) catalyse the demercuration of [Hg(C≡CR)2] (R = Ph, C6H4Me-4, Bun) to provide buta-1,3-diynes, however the reactions proceed by quite different mechanisms as indicated by (i) the isolation of [Ru{C(C≡CR)= CHR}Cl(CO)(PPh3)2] and its reintroduction into the catalytic cycle and (ii) the isolation of the iridium complex [IrCl(C≡CR)(HgC≡CR)-(CO)(PPh3)2].

KW - Diyne coordination chemistry

KW - Ruclh(co)(pph3)3

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U2 - 10.1039/cc9960001059

DO - 10.1039/cc9960001059

M3 - Article

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SN - 1359-7345

SP - 1059

EP - 1060

JO - Chemical Communications

JF - Chemical Communications

IS - 9

ER -

Transalkynylation and catalytic demercuration of bis(alkynyl)mercurials: Two alternative mechanisms

Abstract

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