655856

4,4,5,5-Tetramethyl-1,3,2-Dioxaborolan

97%

• Synonym(e): Pinakolboran
• Empirische Formel (Hill-System): C₆H₁₃BO₂
• CAS-Nummer: 25015-63-8
• Molekulargewicht: 127.98
• MDL-Nummer: MFCD00674030
• UNSPSC-Code: 12352103
• PubChem Substanz-ID: 24884127
• NACRES: NA.22

Eigenschaften

• Assay: 97%
• Brechungsindex: n20/D 1.396 (lit.)
• bp: 42-43 °C/50 mmHg (lit.)
• Dichte: 0.882 g/mL at 25 °C (lit.)
• Lagertemp.: 2-8°C
• SMILES String: CC1(C)OBOC1(C)C
• InChI: 1S/C6H13BO2/c1-5(2)6(3,4)9-7-8-5/h7H,1-4H3
• InChIKey: UCFSYHMCKWNKAH-UHFFFAOYSA-N

Beschreibung

Anwendung

4,4,5,5-Tetramethyl-1,3,2-dioxaborolane may be used for:

• Borylation at the benzylic C-H bond of alkylbenzenes in the presence of a palladium catalyst to form pinacol benzyl boronate.
• Hydroboration of alkyl or aryl alkynes and alkenes in the presence of transition metal catalysts.
• Coupling with aryl iodides in the presence of a copper catalyst to form aryl boronates.
• Asymmetric hydroboration of 1,3-enynes to form chiral allenyl boronates.

Sicherheitshinweise

• Piktogramme: GHS02
• Signalwort: Danger
• H-Sätze: H225,H261
• P-Sätze: P210 - P231 + P232 - P233 - P280 - P302 + P335 + P334 - P370 + P378
• Gefahreneinstufungen: Flam. Liq. 2 - Water-react 2
• Lagerklassenschlüssel: 4.3 - Hazardous materials which set free flammable gases upon contact with water
• WGK: WGK 3
• Flammpunkt (°F): 41.0 °F - closed cup
• Flammpunkt (°C): 5 °C - closed cup
• Persönliche Schutzausrüstung: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter