Alfa Aesar™ 15-Crown-5, 98%
Brand: Alfa Aesar™ A12265.06
UNSPSC : 12352005
Code : NEW
Additional Details : CAS Number : 33100-27-5 Weight : 0.00500kg
15-Crown-5 is used as an efficient phase transfer catalyst and as a complexing agent. It is used to isolate oxonium ion (H7O3)+ salts especially from a solution of tetrchloroauric acid. It catalyzes the O-alkylation of the sodium salts of carboxylic acids in the penicillin and cephalosporin series, thereby facilitating esterification reaction without usage of acid. It is also used to facilitate the Williamson synthesis of ethers with hindered alcohols and sodium hydride. It is used with lithium aluminum hydride, for performing reduction reactions in hydrocarbon solvents. Further, it is involved in the Horner-Wadsworth-Emmons reaction to prepare stilbenes from aldehydes.
Miscible with organic solvents.
Hygroscopic. Moisture sensitive. Incompatible with strong oxidizing agents and strong acids.
|150° to 155°C (0.5mmHg)|