4,4'-Di-<i>tert</i>-butylbiphenyl , ≥98.0%(GC) , 1625-91-8

CAS NO.：1625-91-8

Empirical Formula: C20H26

Molecular Weight: 266.42

MDL number: MFCD00008834

EINECS: 216-615-4

PRODUCT Properties

• Melting point: 126-130 °C(lit.)
• Boiling point: 190-192 °C13 mm Hg(lit.)
• Density: 0.9463 (estimate)
• refractive index: 1.5928 (estimate)
• Flash point: 190-192°C/13mm
• storage temp.: Sealed in dry,Room Temperature
• solubility: dioxane: 0.1 g/mL, clear
• form: Crystalline Powder
• color: Light yellow to yellow-orange
• BRN: 2095855
• CAS DataBase Reference: 1625-91-8(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-Di-tert-butylbiphenyl(1625-91-8)

Description and Uses

It is used in the generation of 1,2-di(lithiomethyl)benzene. It is found to accept electrons from Li metal to give a radical anion which is highly effective in the conversion of alkyl halides to alkyllithiums. 4,4?-Di-tert-butylbiphenyl is used in production of homoallylic amine derivatives. It is also used in the preparation of lithium di-tert-butylbiphenylide, a radical anion, superior to sodium or lithium naphthalenides for metalation reactions. Along with lithium, 4,4?-Di-tert-butylbiphenyl catalyzes; reaction of chloromethyl ethyl ether and different carbonyl compounds to yield corresponding hydroxyethers and reductive opening of N-phenylazetidine.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H335-H315-H319
• Precautionary statements: P264-P280-P305+P351+P338-P337+P313P-P264-P280-P302+P352-P321-P332+P313-P362
• Safety Statements: 22-24/25
• WGK Germany: 3
• HS Code: 29029090