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139177-62-1 - Dysprosium(III) trifluoromethanesulfonate, 98% - Dysprosium(III) triflate - L20252 - Alfa Aesar

L20252 Dysprosium(III) trifluoromethanesulfonate, 98%

CAS-Nummer
139177-62-1
Synonyme
Dysprosium(III) triflate

Größe Preis ($) Menge Verfügbarkeit
5g 51,91
25g 140,40
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Dysprosium(III) trifluoromethanesulfonate, 98%

MDL
MFCD00209583

Chemische Eigenschaften

Formel
C3DyF9O9S3
Molmasse
609.69
Sensitivität
Hygroscopic
Löslichkeit
Soluble in water.

Anwendungen

Dysprosium(III) trifluoromethanesulfonate is a water-tolerant Lewis acid used in the Aldol reaction of silyl enol ethers with aldehydes. This is an effective catalyst for electrophilic substitution reactions of indoles with imines. Also used as catalyst for Aza-Piancatelli rearrangement, Friedel-Crafts alkylation, ring-opening polymerization reactions, microwave-assisted Kabachnik-Fields condensation, cycloaddition reactions (Lewis-acid catalyst), fries rearrangement and enantioselective glyoxalate-ene reactions.

Bemerkungen

Hygroscopic. store away from water/moisture. Store in cool. Keep container tightly closed in a dry and well-ventilated place. Store away from oxidizing agent.

Literaturverweise

Leoni I Palmer; Javier Read de Alaniz. Direct and highly diastereoselective synthesis of azaspirocycles by a dysprosium(III) triflate catalyzed aza-Piancatelli rearrangement. Angewandte Chemie. International edition in English. 2011, 50 (31), 7167-7170.

Patrick D Pohlhaus; Shanina D Sanders; Andrew T Parsons; Wei Li, Jeffrey S Johnson. Scope and mechanism for lewis acid-catalyzed cycloadditions of aldehydes and donor-acceptor cyclopropanes: evidence for a stereospecific intimate ion pair pathway. Journal of the American Chemical Society. 2008, 130 (27), 8642-8650.

The uses of rare-earth metal triflates in organic synthesis have been reviewed by S. Kobayashi: Synlett, 689 (1994); Chem. Rev., 102, 2227 (2002).

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Sicherheitshinweise: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

Harmonized Tariff Code
2846.90
TSCA
No

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