Formation of manganese enediyne complexes from manganese alkynylcarbene complexes

被引:12
作者
Casey, CP [1 ]
Dzwiniel, TL [1 ]
Kraft, S [1 ]
Kozee, MA [1 ]
Powell, DR [1 ]
机构
[1] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA
关键词
manganese alkynylcarbene complexes; enediyne; manganese alkyne complexes;
D O I
10.1016/S0020-1693(02)01273-2
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Dimerization of the alkynylcarbene complex (C5H4Me)(CO)(2)Mn=C(Tol)C=CTol (10) occurred at 65 degreesC to give a mixture of E- and Z-enediyne complexes [(C5H4Me)(OC)(2)Mn](2)[eta(2), eta(2)-TolC=C(Tol)C=C(Tol)C=CTol] (13). Thermolysis of alkynye complexes 10 at higher (100 degreesC) temperature led to the formation of manganese-free E- and Z-enediynes TolC=C(Tol)C=C(Tol)C=CTol (14-E and 14-Z). Attempted synthesis of the tethered bis-(alkynylcarbene) Complex Cp(OC)(2)Mn=C(Ph)C=CCH2CH2CH2C=CC(Ph)= Mn(CO)(2)CP led instead to the cyclic enediyne complex [Cp(OC)(2)Mn](2)[eta(2), eta(2)-PhC=CC(CH2CH2CH2)=CC=CPh] (19), from which the metal-free enediyne 1,2-bis(phenylethynyl)cyclopentene (20) was released by thermolysis at 90 degreesC. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
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页码:320 / 326
页数:7
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