Synthesis and reactivity of the first stable chromium(VI) alkylidene complexes

被引：60

作者：

Coles, MP

Gibson, VC

Clegg, W

Elsegood, MRJ

Porrelli, PA

机构：

[1] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,DEPT CHEM,LONDON SW7 2AY,ENGLAND

[2] UNIV NEWCASTLE UPON TYNE,DEPT CHEM,NEWCASTLE TYNE NE1 7RU,TYNE & WEAR,ENGLAND

来源：

CHEMICAL COMMUNICATIONS | 1996年 / 16期

关键词：

D O I：

10.1039/cc9960001963

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The chromium(VI) dialkyl complex [Cr(NC6H3Pr2i-2,6)(2)(CH(2)CMe(3))(2)] readily eliminates CMe(4) in room-temperature hydrocarbon and ether solutions to generate the hexavalent alkylidene species [Cr(NC6H3Pr2i-2,6)(2)(=CMe(3))] which can be trapped in the presence of strong donor molecules to give the first stable hexavalent chromium alkylidene complexes [Cr(NC6H3Pr2i-2.6)(2)(=CHCMe(3))(L)] (L = thf, PMe(3)); in aromatic hydrocarbon solutions, the products obtained are those arising from C-H activation across the chromium-carbon double bond.

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收藏

页码：1963 / 1964

页数：2

相关论文

共 15 条

[1] ETA-2-BENZYNE AND ETA-1-BENZYLIDENE COMPLEXES OF NIOBIUM WITH ANCILLARY IMIDO LIGANDS [J].

COCKCROFT, JK ;

GIBSON, VC ;

HOWARD, JAK ;

POOLE, AD ;

SIEMELING, U ;

WILSON, C .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1992, (22) :1668-1670

[2] BIS(ARYLIMIDO) COMPLEXES OF CHROMIUM(VI) [J].

COLES, MP ;

DALBY, CI ;

GIBSON, VC ;

CLEGG, W ;

ELSEGOOD, MRJ .

POLYHEDRON, 1995, 14 (17-18) :2455-2459

[3] WELL-DEFINED ETHYLENE POLYMERIZATION CATALYSTS DERIVED FROM BIS(IMIDO) CHROMIUM(VI) PRECURSORS [J].

COLES, MP ;

DALBY, CI ;

GIBSON, VC ;

CLEGG, W ;

ELSEGOOD, MRJ .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1995, (16) :1709-1711

[4] POLYMER SYNTHESIS AND ORGANOTRANSITION METAL CHEMISTRY [J].

GRUBBS, RH ;

TUMAS, W .

SCIENCE, 1989, 243 (4893) :907-915

[5] SYNTHESIS AND X-RAY CRYSTAL-STRUCTURE OF AN ARYLCHROMIUM(VI) DERIVATIVE (BUTN)2CR(2,4,6-ME3C6H2)2 [J].

HURSTHOUSE, MB ;

MOTEVALLI, M ;

SULLIVAN, AC ;

WILKINSON, G .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1986, (18) :1398-1399

[6]

Ivin K. J., 1983, OLEFIN METATHESIS

[7] REACTIONS OF TERT-BUTYL ISOCYANATE AND TRIMETHYLSILYL AZIDE WITH IMIDOAMIDO COMPOUNDS OF CHROMIUM, MOLYBDENUM AND TUNGSTEN [J].

LAM, HW ;

WILKINSON, G ;

HUSSAINBATES, B ;

HURSTHOUSE, MB .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1993, (05) :781-788

[8] TERT-BUTYLIMIDO COMPLEXES OF CHROMIUM AND VANADIUM - X-RAY CRYSTAL-STRUCTURES OF CR(NBUT)CL-3(MEOCH2CH2OME), CR[C6H4(NH)2-ORTHO]CL2(PME2PH)2, CR(NBUT)2(OSIPH3)2, CR(NBUT)-CL(OC9H6N)2 AND [(PPH3)2][CR(NBUT)(S2C2(CN)2)2] [J].

LEUNG, WH ;

DANOPOULOS, AA ;

WILKINSON, G ;

HUSSAINBATES, B ;

HURSTHOUSE, MB .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1991, (08) :2051-2061

[9] ORGANOMETALLIC CHEMISTRY OF CHROMIUM(VI) - SYNTHESIS OF CHROMIUM(VI) ALKYLS AND THEIR PRECURSORS - X-RAY CRYSTAL-STRUCTURE OF THE METALLACYCLE CR(N-TERT-BU)2(O-(CHSIME3)2C6H4) [J].

MEIJBOOM, N ;

SCHAVERIEN, CJ ;

ORPEN, AG .

ORGANOMETALLICS, 1990, 9 (03) :774-782

[10] LIVING RING-OPENING METATHESIS POLYMERIZATION CATALYZED BY WELL-CHARACTERIZED TRANSITION-METAL ALKYLIDENE COMPLEXES [J].

SCHROCK, RR .

ACCOUNTS OF CHEMICAL RESEARCH, 1990, 23 (05) :158-165