Efficient preparation of stable microcrystalline silasesquioxane metal complex compounds

摘要

Silasesquioxane metal complexes of formula {(R<1>SiO1.5)n(R<2>aSiO1.5)m(B)q(O)r}u(M)v(Y)w (IA) are new; in which R<1> = 5-10 carbon (C) cycloalkyl, norbornyl or adamantyl; R<2> = hydroxyl (OH); B = hydrogen (H), OH, halogen, alkoxy or preferably SiR<3>y, SiMe2(CH2)sCH=CH2, SiMe2(CH2)sCH2CH2A or SiMe2(CH2)sCHACH3; R<3> = 1-4 C alkyl or aryl; A = OH, carboxyl (COOH), amino (NH2), sulphonate (SO3<->), carboxylate (COO<->); s = 1-20; y = 2 or 3; R<1>, R<3> may be functionalised with OH; n = 6 or 7; m = 0 or 1; q, r = 0-2; Ra = oxygen (O); u, v = 1-4; w = 0-12. Also claimed are: (i) a method of preparing silasesquioxane metal complexes (I), including (IA); (ii) supported catalysts of (I) on a normal oxidic support with an average pore size of 30-200 ?A; and (iii) a method of producing an epoxide compound.