551007

2,7-Di-tert-butyl-9-fluorenylmethyl chloroformate

97%

• Linear Formula: ClCOOCH₂CH(C₆H₃C(CH₃)₃)₂
• CAS Number: 287381-46-8
• Molecular Weight: 370.91
• MDL number: MFCD03701519
• UNSPSC Code: 12352100
• PubChem Substance ID: 24879152

Properties

• Assay: 97%
• mp: 66-70 °C (lit.)
• storage temp.: 2-8°C
• SMILES string: CC(C)(C)c1ccc-2c(c1)C(COC(Cl)=O)c3cc(ccc-23)C(C)(C)C
• InChI: 1S/C23H27ClO2/c1-22(2,3)14-7-9-16-17-10-8-15(23(4,5)6)12-19(17)20(18(16)11-14)13-26-21(24)25/h7-12,20H,13H2,1-6H3
• InChI key: PHUMWWRUIGKGNN-UHFFFAOYSA-N

Description

General description

2,7-Di-tert-butyl-9-fluorenylmethyl chloroformate contains 2,7-di-tert-butyl-Fmoc protecting group (Fmoc= fluorenylmethoxycarbonyl), which is more soluble in organic solvents when compared to its Fmoc analog. It can be prepared from fluorene in three steps, by di-tert-butylation, hydroxymethylation and phosgenation.

Application

2,7-Di-tert-butyl-9-fluorenylmethyl chloroformate may be used in the preparation of polymer-supported (2,7-di-tert-butyl-9-fluorenyl)methyl succinimidyl carbonate (Dtb-Fmoc-P-OSu), a polymeric reagent for protecting amino groups.

Safety Information

• Pictograms: GHS05
• Signal Word: Danger
• Hazard Statements: H314
• Precautionary Statements: P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• Hazard Classifications: Skin Corr. 1B
• Storage Class Code: 8A - Combustible corrosive hazardous materials
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves