A Mo(VI) alkylidyne complex with polyhedral oligomeric silsesquioxane ligands: Homogeneous analogue of a silica-supported alkyne metathesis catalyst

被引:68
作者
Cho, Hyeon Mo [1 ]
Weissman, Haim [1 ]
Wilson, Scott R. [1 ]
Moore, Jeffrey S. [1 ]
机构
[1] Univ Illinois, Sch Chem Sci, Urbana, IL 61801 USA
关键词
D O I
10.1021/ja065101x
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A highly active alkyne metathesis catalyst is realized by replacing the amide ligands of a molybdenum(VI) trisamide alkylidyne complex with silanol groups from incompletely condensed POSS (polyhedral oligomeric silsesquioxane) ligands. This catalyst serves as an effective homogeneous mimic of an amorphous silica-supported catalyst. Reactivities of various catalytic mixtures are reported along with an X-ray structure of the aniline-coordinated amidodisiloxymolybdenum(VI) alkylidyne complex. Copyright © 2006 American Chemical Society.
引用
收藏
页码:14742 / 14743
页数:2
相关论文
共 26 条
[1]  
Abbenhuis HCL, 2000, CHEM-EUR J, V6, P25, DOI 10.1002/(SICI)1521-3765(20000103)6:1<25::AID-CHEM25>3.3.CO
[2]  
2-P
[3]  
Ballard D.G.H., 1973, ADV CATAL, P263
[4]   Increased activity of in situ catalysts for alkyne metathesis [J].
Brizius, G ;
Bunz, UHF .
ORGANIC LETTERS, 2002, 4 (17) :2829-2831
[5]   Perhydrocarbyl ReVII complexes:: Comparison of molecular and surface complexes [J].
Chabanas, M ;
Baudouin, A ;
Copéret, C ;
Basset, JM ;
Lukens, W ;
Lesage, A ;
Hediger, S ;
Emsley, L .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (02) :492-504
[6]   A highly active well-defined rhenium heterogeneous catalyst for olefin metathesis prepared via surface organometallic chemistry [J].
Chabanas, M ;
Baudouin, A ;
Copéret, C ;
Basset, JM .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (09) :2062-2063
[7]   Recent developments in the synthesis and structure of organosilanols [J].
Chandrasekhar, V ;
Boomishankar, R ;
Nagendran, S .
CHEMICAL REVIEWS, 2004, 104 (12) :5847-5910
[8]   Surface hydroxylation and silane grafting on fumed and thermal silica [J].
Dugas, V ;
Chevalier, Y .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2003, 264 (02) :354-361
[9]   SYNTHESIS OF A MOLYBDENUM-CONTAINING SILSESQUIOXANE WHICH RAPIDLY CATALYZES THE METATHESIS OF OLEFINS [J].
FEHER, FJ ;
TAJIMA, TL .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1994, 116 (05) :2145-2146
[10]  
Fürstner A, 2001, CHEM-EUR J, V7, P5299, DOI 10.1002/1521-3765(20011217)7:24<5299::AID-CHEM5299>3.0.CO