Di-tert-butyl acetylenedicarboxylate , 98% , 66086-33-7

Synonym(s):
2-Butynedioic acid di-tert-butyl ester;Di-tert-butyl 2-butynedioate

CAS NO.：66086-33-7

Empirical Formula: C12H18O4

Molecular Weight: 226.27

MDL number: MFCD00008808

EINECS: 266-135-4

PRODUCT Properties

• Melting point: 33-37 °C(lit.)
• Boiling point: 80-82 °C0.05 mm Hg(lit.)
• Density: 1.0238 (rough estimate)
• refractive index: 1.4560 (estimate)
• Flash point: >230 °F
• storage temp.: 2-8°C
• form: solid
• Appearance: Colorless to off-white Solid
• BRN: 1957547
• InChI: 1S/C12H18O4/c1-11(2,3)15-9(13)7-8-10(14)16-12(4,5)6/h1-6H3
• InChIKey: FBCRUXRGQFLOMC-UHFFFAOYSA-N
• SMILES: CC(C)(C)OC(=O)C#CC(=O)OC(C)(C)C

Description and Uses

The cross-cyclotrimerization of di-tert-butyl acetylenedicarboxylate, silylacetylenes and acrylamides was studied with cationic rhodium(I)/(R)-tol-binap complex as catalyst. Glycosyl azides were subjected to 1,3-dipolar cycloaddition with di-tert-butyl acetylenedicarboxylate.

Safety

• Symbol(GHS): GHS05,GHS07
• Signal word: Danger
• Hazard statements: H314-H335
• Precautionary statements: P260-P271-P280-P301+P330+P331-P303+P361+P353-P305+P351+P338
• target organs: Respiratory system
• PPE: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
• Hazard Codes: C
• Risk Statements: 34-36/37
• Safety Statements: 26-27-28-36/37/39-45
• RIDADR: UN 3261 8/PG 3
• WGK Germany: 3
• F: 8
• HazardClass: 8
• PackingGroup: III
• Storage Class: 8A - Combustible corrosive hazardous materials
• Hazard Classifications: Eye Dam. 1; Skin Corr. 1B; STOT SE 3