DIBUTYLCARBAMYL CHLORIDE Property

Boiling point:

257-260 °C(lit.)

Density 

0.985 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.456(lit.)

Flash point:

110 °C

pka

-1.85±0.70(Predicted)

Safety

Hazard Codes 

C

Risk Statements 

34

Safety Statements 

26-36/37/39-45

RIDADR 

UN 3265 8/PG 3

WGK Germany 

3

RTECS 

FD2230000

HazardClass 

IRRITANT

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P310Immediately call a POISON CENTER or doctor/physician.

P321Specific treatment (see … on this label).

P363Wash contaminated clothing before reuse.

P405Store locked up.

P501Dispose of contents/container to..…

DIBUTYLCARBAMYL CHLORIDE Chemical Properties,Usage,Production

Uses

It is reported that Dibutylcarbamoyl Chloride is used as a reagent for the preparation of 7-azaindole-1,3-dicarboxamide hydroxyethylamine which exhibited potent BACE-1 enzyme inhibition. Also it is used for the preparation of copper salicylaldehyde semicarbazone complex which showed cytotoxicity in human cancer cells.

Preparation

In a 100 mL roundbottomed flask were placed dibutylamine (6.45 g, 0.05 mol), pyridine (4.0 g, 0.05 mol), N-cyclohexyl-N0,N0,N00,N00-tetraethylguanidine (12.7 g, 0.05 mol), and toluene (40 mL). The resulting solution was cooled to 10 °C using an ice/salt bath and carbon dioxide was bubbled into the cooled solution for 30 min. After this period of time, the pre-formed carbamate solution was added in a single portion via a cannula to a cooled ( 10 °C) solution of thionyl chloride (6 g, 0.05 mol) in toluene (40 mL). The reaction mixture was stirred at 10 °C for 45 min. It was then poured into 0.1 m aq. HCl (100 mL), giving rise to two layers. The organic layer was separated, dried over anhydrous Mg2SO4, filtered, and the solvent was removed in vacuo. The residue was distilled in vacuo (1 mmHg) at 95–98 °C to give 7.62 g (79%) of N,N-dibutyl carbamoyl chloride.