Rearrangement of carbiminium carbonylmetalates by mutual exchange of alkoxy- and amino functionalities (M = W, Cr) -: Crystal structure analyses

被引:6
作者
Aumann, R [1 ]
Roths, K [1 ]
Fröhlich, R [1 ]
机构
[1] Univ Munster, Inst Organ Chem, D-48149 Munster, Germany
关键词
carbene complexes; metallahexatrienes; carbiminium carbonylmetalates; chromium and tungsten complexes; enamines;
D O I
10.1016/S0022-328X(00)00602-1
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Reaction of (1-alkynyl)carbene complexes (CO)(5)M=C(OEt)C=CPh (1a,b) (M = Cr, W) with enamines R'(R2N)C=CHR " (4a-d) (R2N = morpholine) yielded carbiminium carbonylmetalates (-)(OC)(5)M-C(OEt)=C[C(=N+R2)R']C(Ph)=CHR " (5) by metathesis of the (N)C=C at the C=C bond. Compounds 5 are stable in solid state, but in solution they undergo a mutual exchange of the ethoxy- and the amino functionality to give isomers (-)(OC)(5)M-C(=N+R2)]C[=C(OEt)R']C(Ph)=CHR " (6), (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:322 / 328
页数:7
相关论文
共 33 条
[1]  
AUMANN R, 1994, SYNLETT, P1041
[2]  
AUMANN R, 1993, SYNLETT, P669
[3]  
Aumann R, 2000, EUR J ORG CHEM, V2000, P17, DOI 10.1002/(SICI)1099-0690(200001)2000:1<17::AID-EJOC17>3.0.CO
[4]  
2-T
[5]  
Aumann R, 2000, EUR J ORG CHEM, V2000, P37
[6]   Dichotomy of enamines at the CC bond of a (1-alkynyl)carbene tungsten complex.: (1-azoniabutadien-4-yl)carbonylmetalates (-OC)5WC(OEt)=CR1C(=N+R2)Me, stable torsion isomers of (2-aminoethenyl)carbene complexes (OC)5W=C(OEt)CR1=C(NR2)Me [J].
Aumann, R ;
Roths, K ;
Frohlich, R .
ORGANOMETALLICS, 1997, 16 (26) :5893-5899
[7]  
AUMANN R, 1993, SYNLETT, P667
[8]   Organic syntheses via transition metal complexes .86. Regioselective [C-3+C-2] cyclopentadiene annulation to enamines with alkynylcarbene complexes of chromium and tungsten as novel C-3 building blocks [J].
Aumann, R ;
Meyer, AG ;
Frohlich, R .
ORGANOMETALLICS, 1996, 15 (23) :5018-5027
[9]  
Aumann R, 1999, EUR J ORG CHEM, V1999, P2545
[10]   (1-alkynyl)carbene complexes (equals 1-metalla-1-buten-3-ynes): Tools for synthesis [J].
Aumann, R ;
Nienaber, H .
ADVANCES IN ORGANOMETALLIC CHEMISTRY, VOL 41, 1997, 41 :163-242