One-Pot Reactions with Sol-Gel Entrapped Catalysts, Acids and Bases
✍ Scribed by Faina Gelman; Jochanan Blum; Herbert Schumann; David Avnir
- Book ID
- 110400292
- Publisher
- Springer
- Year
- 2003
- Tongue
- English
- Weight
- 80 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0928-0707
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📜 SIMILAR VOLUMES
## Abstract An efficient method for __Knoevenagel__ condensation of arenecarbaldehydes with active methylene compounds such as barbituric acid and __Meldrum__'s acid in the presence of gel‐entrapped base catalysts is reported. The method has been extended to the one‐pot synthesis of arylmethylene‐b
Sol-gel silicas were synthesized from the hydrolysis of tetraethoxysilane and N-beta-aminoethyl-gamma-aminopropyltrimethoxysilane in the presence of water and ethanol by using ammonium hydroxide or hydrochloric acid as base or acid catalysts, respectively. The influence of the type of the catalyst e
Chiral Ru-BINAP, Rh-DIOP and Rh-BPPM complexes have been physically entrapped in sol-gel matrices. The resulting materials are recyclable leach-proof catalysts for enantioselective hydrogenation of itaconic acid. Chiral methylsuccinic acid of o.p. up to 78% is obtained. The complexes, including the