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2892-62-8 - 3,4-Di-n-butoxy-3-cyclobutene-1,2-dione, 98% - Di-n-butyl squarate - Squaric acid di-n-butyl ester - A18960 - Alfa Aesar

A18960 3,4-Di-n-butoxy-3-cyclobutene-1,2-dione, 98%

CAS-Nummer
2892-62-8
Synonyme
Di-n-butyl squarate
Squaric acid di-n-butyl ester

Größe Preis ($) Menge Verfügbarkeit
1g 24,84
5g 68,60
25g 275,00
Zum Warenkorb hinzufügen Zur Angebotsanfrage hinzufügen Artikel anzeigen

3,4-Di-n-butoxy-3-cyclobutene-1,2-dione, 98%

MDL
MFCD00037150

Chemische Eigenschaften

Formel
C12H18O4
Molmasse
226.27
Siedepunkt
155-158°/3mm
Flammpunkt
>110°(230°F)
Dichte
1.047
Brechungsindex
1.4950
Löslichkeit
Insoluble in water.

Anwendungen

3,4-Dibutoxy-3-cyclobutene-1,2-dione was used in the synthesis of novel semisquarylium dye, useful for highly selective Hg2+ sensing in aqueous media. It was also employed in the synthesis of 3-butoxy-4-(1,3,3-trimethyl-2,3-dihydro-1H-2-indolylidenemethyl)-3-cyclobutene-1,2-dione, intermediate for the synthesis of squaryl dyes.

Bemerkungen

Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Store away from strong oxidizing agents.

Literaturverweise

Bae J-S, et al. A benzothiazole-based semisquarylium dye suitable for highly selective Hg2+ sensing in aqueous media.. Dyes and Pigments. 2009, 83(3), 324-27.

Shishkina SV, et al. Molecular and crystal structure of 3-butoxy-4-(1, 3, 3-trimethyl-2, 3-dihydro-1H-2-indolylidenemethyl)-3-cyclobutene-1, 2-dione and its thio analog. J. Struct. Chem. 2005, 46 (1), 154-58.

Reaction with alkyl- or aryllithium compounds results in ring opening to give the corresponding symmetrical 2,3-dibutoxy-1,4-diketones in high yield: Tetrahedron., 51, 12373 (1995).

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H315-H319

Causes skin irritation. Causes serious eye irritation.

Sicherheitshinweise: P280-P264-P305+P351+P338-P362-P321-P332+P313-P337+P313-P302+P352

Wear protective gloves/protective clothing/eye protection/face protection. Wash thoroughly after handling. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Take off contaminated clothing and wash before reuse. Specific treatment (see label). If skin irritation occurs: Get medical advice/attention. If eye irritation persists: IF ON SKIN: Wash with plenty of soap and water.

Weitere Referenzen

Beilstein
1968189
Harmonized Tariff Code
2914.50
TSCA
No
RTECS
GU1772066

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