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9049-93-8 - Amberlyst® A-21, ion exchange resin - A17956 - Alfa Aesar

A17956 Amberlyst® A-21, ion exchange resin

CAS Number
9049-93-8
Synonyms

Size Price ($) Quantity Availability
250g 64.50
1000g 197.00
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Amberlyst® A-21, ion exchange resin

MDL
MFCD00145842

Chemical Properties

Solubility
Insoluble in water.

Applications

Amberlyst|r A-21, ion exchange resin is used as a heterogeneous catalyst for conversion of carbonyl compounds to oximes by reacting with hydroxylamine hydrochloride. It is an effective catalyst for the Michael addition of nitroalkanes to methyl acrylate.

Notes

Incompatible with strong oxidizing agents, strong bases and nitric acid.

Literature References

Macroreticular weakly basic anion-exchange resin, free base, suitable for non-aqueous applications.

Effective catalyst for the Michael addition of nitroalkanes to methyl acrylate: Synthesis, 711 (1987), and also for the cleavage of 2-nitrocycloalkanones: Synthesis, 355 (1992). Promotes the Henry (nitro-aldol) reaction of aldehydes with nitroalkanes giving superior results to conventional conditions: Liebigs Ann. Chem., 1235 (1994); J. Org, Chem., 59, 5466 (1994); Tetrahedron, 52, 1677 (1996).

Useful heterogeneous catalyst for conversion of carbonyl compounds to oximes with hydroxylamine hydrochloride: Chem. Lett., 475 (1997).

Lerin, L. A.; Catani, M.; Oliveira, D.; Massi, A.; Bortolini, O.; Cavazzini, A.; Giovannini, P. P. Continuous ion-exchange resin catalysed esterification of eugenol for the optimized production of eugenyl acetate using a packed bed microreactor. RSC Adv. 2015, 5 (94), 76898-76903.

Do?rr, A. A.; Lubell, W. D. gamma-Turn Mimicry with Benzodiazepinones and Pyrrolobenzodiazepinones Synthesized from a Common Amino Ketone Intermediate. Org. Lett. 2015, 17 (14), 3592-3595.

Other References

Harmonized Tariff Code
3914.00
TSCA
No

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