MDL number MFCD00145842
Popular Documents: Specification Sheet (PDF) | RAMAN FTIR (PDF)
带烷基胺官能团的弱碱性、大网格树脂。
1 kg in poly bottle
5, 250 g in poly bottle
Amberlyst® A21 free base was used in catalyst preparation.
Amberlyst A21 is a neutral ion-exchange resin and a solid base which catalyses three-component reaction of aldehyde and malononitrile with various active methylene compounds to synthesize a range of pyran annulated heterocycles. Use of the solid base is to generate a highly green protocol by eliminating chromatographic purification involving hazardous organic solvents, and for easy recovery and reusability of the catalyst. Amberlyst A21 is used as a fluid bed resin. Fluid bed reactor allows gel-type beads, of polymer-supported (PS) organic reactions, to be used in a flow system. The Michael reaction between methyl 1-oxoindan-2-carboxylate and methyl vinyl ketone in toluene can be attained through a fluid bed of Amberlyst A21 at 50°C.
Amberlyst 为以下机构的注册商标: The Dow Chemical Company or an affiliated company of Dow
vapor density | <1 (vs air) |
vapor pressure | 17 mmHg ( 20 °C) |
autoignition temp. | 800 °F |
moisture | 56-62% |
matrix | styrene divinylbenzene (macroporous) |
particle size | 22-30 mesh |
490-690 μm | |
capacity | 1.3 meq/mL by wetted bed volume |
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