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SiliCycle - Microwave Assisted Scavenging
 

This rapidly growing field is highly compatible with silica bound scavengers and reagents. Below (table1) are the results using Si - Amine (Figure 1) to scavenge a variety of nucleophiles. The scavenging was carried out using 4 equiv under mircowave conditions: 4 min, 150°C, 300W. No leaching of the reactive groups was obeserved by GC-MS. The integrity of the functionalized silica gel under microwave conditions (700W, 30 min) is not affected.

Nucleophile   % Scavenged

Benzaldehyde   97

Benzoyl chloride   100

Acetic Anhydride   99

1,1,3,3-Tetramethylbutylisocyanate   100

Tert-butylphenylisocyanate   100

Table 1: Nucleophile scavenging with Si- Amine under microwave conditions. Reactions were run by CEM corporation on a Discover™ synthesizer 4min, 150°C, 300W
 
 
  Si - Amine  
  Figure 1: Si - Amine  
     
 

 
 
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