Base-catalyzed cleavage and homologation of polyhedral oligosilsesquioxanes

被引：52

作者：

Feher, FJ ^{[1
]}

Terroba, R ^{[1
]}

Ziller, JW ^{[1
]}

机构：

[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA

来源：

CHEMICAL COMMUNICATIONS | 1999年 / 21期

关键词：

D O I：

10.1039/a906397h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Readily available Cy6Si6O9 2 (Cy = c-C6H11) reacts with aqueous NEt4OH in THF to afford endo-C-2h-Cy6Si6O7(OH)(4) 3a, which upon further hydrolysis produces CySi(OH)(3) fragments capable of reacting with 3a to produce endo-C-3-Cy7Si7O9(OH)(3) 1b; the reaction of 2 with aqueous NEt4OH in the presence of (vinyl)Si(OMe)(3) affords endo-C-s-Cy-6(vinyl)Si7O9(OH)(3) 1c via trapping of 3a with monosilanes derived from (vinyl)Si(OMe)(3).

引用

收藏

页码：2153 / 2154

页数：2

相关论文

共 41 条

[1] Modelling the active sites of heterogeneous titanium epoxidation catalysts using titanium silasequioxanes: Insight into specific factors that determine leaching in liquid-phase processes [J].

Abbenhuis, HCL ;

Krijnen, S ;

vanSanten, RA .

CHEMICAL COMMUNICATIONS, 1997, (03) :331-332

[2] FACILE, HIGH-YIELD SYNTHESIS OF FUNCTIONALIZED SPHEROSILICATES - PRECURSORS OF NOVEL ORGANOLITHIC MACROMOLECULAR MATERIALS [J].

AGASKAR, PA .

INORGANIC CHEMISTRY, 1990, 29 (09) :1603-1603

[3] SILSESQUIOXANES [J].

BANEY, RH ;

ITOH, M ;

SAKAKIBARA, A ;

SUZUKI, T .

CHEMICAL REVIEWS, 1995, 95 (05) :1409-1430

[4]

BASSINDALE AR, 1999, 12 INT S ORGA CHEM S

[5] THE STRUCTURE OF HEXA(CYCLOHEXYLSESQUISILOXANE), (C6H11)6SI6O9 [J].

BEHBEHANI, H ;

BRISDON, BJ ;

MAHON, MF ;

MOLLOY, KC .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1994, 469 (01) :19-23

[6] POLYCONDENSATION OF CYCLOHEXYLSILANETRIOL [J].

BROWN, JF ;

VOGT, LH .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1965, 87 (19) :4313-&

[7]

Crivello JV, 1997, J POLYM SCI POL CHEM, V35, P407

[8] Synthesis and structural characterisation of tripodal titanium silsesquioxane complexes: a new class of highly active catalysts for liquid phase alkene epoxidation [J].

Crocker, M ;

Herold, RHM ;

Orpen, AG .

CHEMICAL COMMUNICATIONS, 1997, (24) :2411-2412

[9] FUNCTIONALIZED OCTA-(PROPYLSILSESQUIOXANES) (3-XC(3)H(6))(8)(SI8O12) - MODEL COMPOUNDS FOR SURFACE-MODIFIED SILICA-GELS [J].

DITTMAR, U ;

HENDAN, BJ ;

FLORKE, U ;

MARSMANN, HC .

JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1995, 489 (1-2) :185-194

[10] FACILE SYNTHESES OF NEW INCOMPLETELY CONDENSED POLYHEDRAL OLIGOSILSESQUIOXANES - [(CCYCLO-C5H9)7SI7O9(OH)3], [(CYCLO-C7H13)7SI7O9(OH)3], AND [(CYCLO-C7H13)6SI6O7(OH)4] [J].

FEHER, FJ ;

BUDZICHOWSKI, TA ;

BLANSKI, RL ;

WELLER, KJ ;

ZILLER, JW .

ORGANOMETALLICS, 1991, 10 (07) :2526-2528

← 1 2 3 4 5 →