Preparation of guanidine bases immobilized on SBA-15 mesoporous material and their catalytic activity in knoevenagel condensation

摘要

Guanidine was immobilized on SBA-15 mesoporous material by a consecutive addition reaction of precursors and a condensation reaction between presynthesized guanidine-containing silane and hydroxyl groups of supports. Immobilized guanidine was thermally stable and showed the high activity in the Knoevenagel condensation between cyclohexanone and benzylcyanide.