442003

Crotonaldehyddiethylacetal

technical, 90%

• Lineare Formel: CH₃CH=CHCH(OC₂H₅)₂
• CAS-Nummer: 63511-92-2
• Molekulargewicht: 144.21
• NACRES: NA.22
• PubChem Substance ID: 24867717
• UNSPSC Code: 12352100
• MDL number: MFCD00239338
• Assay: 90%

Eigenschaften

• grade: technical
• assay: 90%
• refractive index: n20/D 1.412 (lit.)
• bp: 146-150 °C (lit.)
• density: 0.831 g/mL at 25 °C (lit.)
• SMILES string: [H]\C(C)=C(\[H])C(OCC)OCC
• InChI: 1S/C8H16O2/c1-4-7-8(9-5-2)10-6-3/h4,7-8H,5-6H2,1-3H3/b7-4+
• InChI key: ZUMISMXLQDKQDS-QPJJXVBHSA-N

Beschreibung

General description

trans-2-Butenal diethyl acetal is an acetal. Acetals are usually derived from the aldehydes. They have two single-bonded oxygen atoms attached to the same carbon atom. They are stable under basic conditions and they can be hydrolyzed back to the carbonyl compound. Acetals serves as a carbonyl protecting group and also are present as functional groups in glycosidic bonds. trans-2-Butenal diethyl acetal has been synthesized from trans-2-butenal with ethanol in the presence of methanesulfonic acid or methylsulfonate as catalysts.

Application

trans-2-Butenal diethyl acetal may be used in the preparation of 2S,3S-epoxybutan-1-ol, an intermediate in the synthesis of erythromycin antibiotic.

Sicherheitshinweise

• pictograms: GHS02,GHS07
• signalword: Warning
• hcodes: H226,H315,H319,H335
• pcodes: P210 - P233 - P240 - P241 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Lagerklasse: 3 - Flammable liquids
• wgk: WGK 3
• flash_point_f: 93.2 °F - closed cup
• flash_point_c: 34 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter