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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%

Codice CAS
2892-62-8
Sinonimi
Di-n-butyl squarate
Squaric acid di-n-butyl ester

Dimensioni Prezzo ($) Quantità Disponibilità
1g 24,80
5g 65,90
25g 210,00
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3,4-Di-n-butoxy-3-cyclobutene-1,2-dione, 98%

MDL
MFCD00037150

Proprietà chimiche

Formula
C12H18O4
Peso formula
226.27
Punto di ebollizione
155-158°/3mm
Punto di infiammabilità
>110°(230°F)
Densità
1.047
Indice di rifrazione
1.4950
Solubilità
Insoluble in water.

Applicazioni

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.

Note

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

Letteratura

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).

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H315-H319

Causes skin irritation. Causes serious eye irritation.

Dichiarazioni precauzionali: 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.

Altri riferimenti

Beilstein
1968189
Codice tariffe armonizzato
2914.50
TSCA
No
RTECS
GU1772066

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