8.02954

N,N′-Dicyclohexylcarbodiimide

for synthesis

• Synonym(s): N,N′-Dicyclohexylcarbodiimide, DCC
• Linear Formula: C(NC₆H₁₁)₂
• CAS Number: 538-75-0
• Molecular Weight: 206.33
• UNSPSC Code: 12352111
• EC Index Number: 208-704-1

Properties

• Quality Level: 200
• form: solid
• potency: 1110 mg/kg LD₅₀, oral (Rat); 71 mg/kg LD₅₀, skin (Rat)
• reaction suitability: reaction type: Coupling Reactions
• bp: 148-152 °C/15 hPa
• mp: 35-36 °C
• transition temp: flash point 113 °C
• density: 0.95 g/cm³ at 40 °C
• bulk density: 920 kg/m³
• application(s): peptide synthesis
• storage temp.: 2-30°C
• InChI: 1S/C13H22N2/c1-3-7-12(8-4-1)14-11-15-13-9-5-2-6-10-13/h12-13H,1-10H2
• InChI key: QOSSAOTZNIDXMA-UHFFFAOYSA-N

Description

General description

N,N′-Dicyclohexylcarbodiimide (DCC) is a highly versatile dehydrating reagent with varied applications in organic chemistry. It is most frequently used as a coupling agent for the synthesis of amides, esters and thioesters from carboxylic acids and amines, alcohol and thiols, respectively. In peptide synthesis applications, DCC is used in conjunction with auxiliary nucleophiles such as Oxyma Pure and HOBt, to minimize side reactions such as racemization, N-acylurea or oxazolone formation. It is used as a dehydration reagent in the Moffatt oxidation of primary alcohols to aldehydes and in the conversion of amides to nitriles. The by-product of the dehydration reaction, dicyclohexylurea, is sparingly soluble in most reaction solvents and can be removed by filtration.

Application

Recent applications of N,N′-Dicyclohexylcarbodiimide include:

• The synthesis of optically pure N-acyl-N,N′-dicyclohexylureas.
• The activation of the carboxylic acid groups in aromatic carboxylic acids to facilitates their reaction with (N-isocyanimino)trifluoroacetamide to form the corresponding 1,3,4-oxadiazole derivatives.
• The synthesis of poly (vinyl alcohol-co-vinyl levulinate) copolymers for use in biomedical applications.

Safety Information

• Pictograms: GHS05,GHS06
• Signal Word: Danger
• Hazard Statements: H302 - H311 - H317 - H318
• Precautionary Statements: P261 - P264 - P280 - P301 + P312 - P302 + P352 + P312 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 3 Dermal - Acute Tox. 4 Oral - Eye Dam. 1 - Skin Sens. 1
• Storage Class Code: 6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
• WGK: WGK 3
• Flash Point(F): 235.4 °F - closed cup
• Flash Point(C): 113 °C - closed cup