By Mary Elizabeth Salzmann
Explains in basic language the significance of following such uncomplicated safeguard precautions as donning a helmet while using a bicycle, utilizing an oven mitt while baking cookies, and not sharing own info on-line.
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Extra info for Wear a Helmet!. Healthy Safety Habits
Sample text
This Nafion-silica organocatalyst has shown good efficiency in acylation of anisole using acetic anhydride as the acylating agent [27]. Similarly, chloroferrate ionic liquid-grafted silica synthesized via post-grafting of 1-trimethoxysilylpropyl-3-methylimidazolium chlorideeFeCl3 onto siliceous MCM-41 has been reported as an efficient and recyclable heterogeneous support for FC benzylation of substituted benzene to form derivatives of diphenylmethane at a moderate temperature. Although this catalyst contains FeCl3 on its active site, it shows Figure 5 General scheme for the FC alkylation and acylation reactions.
Hydrotalcites as precursors for Mg,Al-mixed oxides used as catalysts on the aldol condensation of citral with acetone. Appl Catal A Gen 2004;272:229e40. [32] Zeidan RK, Hwang SJ, Davis ME. Multifunctional heterogeneous catalysts: SBA-15-containing primary amines and sulfonic acids. Angew Chem Int Ed 2006;45:6332e5. [33] Shanmuganathan S, Greiner L, Domı´nguez de Marı´a P. Silica-immobilized piperazine: a sustainable organocatalyst for aldol and Knoevenagel reactions. Tetrahedron Lett 2010;51:6670e2.
Phys Chem Chem Phys 2010;12:9389e94. [18] Mondal J, Sen T, Bhaumik A. Fe3O4@mesoporous SBA-15: a robust and magnetically recoverable catalyst for one-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones via the Biginelli reaction. Dalton Trans 2012;41:6173e81. [19] Saikia L, Srinivas D, Ratnasamy P. Comparative catalytic activity of Mn(Salen) complexes grafted on SBA-15 functionalized with amine, thiol and sulfonic acid groups for selective aerial oxidation of limonene. Micropor Mesopor Mater 2007;104:225e35.