ORGANIC SYNTHESES VIA TRANSITION-METAL COMPLEXES .74. NOVEL PHOSPHONIUM ALLENIDE AND 2-PHOSPHANYLETHENYL CARBENE CHROMIUM AND TUNGSTEN COMPLEXES

被引：31

作者：

AUMANN, R ^{[1
]}

JASPER, B ^{[1
]}

LAGE, M ^{[1
]}

KREBS, B ^{[1
]}

机构：

[1] UNIV MUNSTER,INST ANORGAN CHEM,D-48149 MUNSTER,GERMANY

来源：

CHEMISCHE BERICHTE | 1994年 / 127卷 / 12期

关键词：

VINYLCARBENE COMPLEXES; CHROMIUM COMPLEXES; TUNGSTEN COMPLEXES; PHOSPHORUS YLIDE COMPLEXES; ALKYNYLCARBENE COMPLEXES; ALLENE COMPLEXES;

D O I：

10.1002/cber.19941271218

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Alkynylcarbene complexes (CO)(5)M=C(OEt)-C drop C-R 1 (M = Cr, W; R = Ph, tBu, SiMe(3)) readily add tertiary phosphanes PPhR(2)' 4 (R' = Ph, Me) to form stable zwitterionic phosphonium allenide complexes (CO)(5)M(-) -C(OEt) = C=C(R)-P(+)PhR(2)' 5. Complex 5a (M = Cr, R = R' = Ph) was characterized by X-ray diffraction. The addition of secondary phosphanes PHR(2) 6 to 1 affords red (2-phosphanyl ethenyl)-carbene complexes (CO)(5)M=C(OEt)-CH=C(R)-PR(2) (E)-8 (R = tBu, cC(6)H(11), Ph) in 34-89% isolated yields. Dinuclear complexes (CO)(5)M=C(OEt)-CH=C(R)-P(R(2))M(CO)(5) (E)-9 are obtained as byproducts. Compounds (E)-8b (M = Cr, R = cC(6)H(11)) and (E)-9i (M = Cr, R = Ph) were characterized by X-ray analyses.

引用

页码：2475 / 2482

页数：8

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