Carbamic acid, 3-butenyl-, 1,1-dimethylethyl ester (9CI) Chemical Properties

Boiling point:

237.9±19.0 °C(Predicted)

Density 

0.929 g/mL at 25 °C

refractive index 

n20/D1.443

Flash point:

101℃

storage temp. 

2-8°C

pka

12.80±0.46(Predicted)

form 

liquid

Appearance

Colorless to light yellow Liquid

Safety Information

Hazard Codes 

Xn,N

Risk Statements 

22-50

Safety Statements 

61

RIDADR 

UN 3082 9 / PGIII

WGK Germany 

3

HS Code 

2924190090

Carbamic acid, 3-butenyl-, 1,1-dimethylethyl ester (9CI) Usage And Synthesis

Synthesis

General procedure: synthesis of intermediate 62. tert-butyl but-3-en-1-yl carbamate. Triethylamine (1.80 mL, 12.98 mmol) was added to a solution of but-3-en-1-amine (700 mg, 9.84 mmol) in dichloromethane (10 mL). The mixture was cooled to 0 °C and di-tert-butyl dicarbonate (2.7 g, 12.37 mmol) was added batchwise under nitrogen protection. The reaction mixture was gradually warmed to room temperature and stirring was continued for 16 hours. Upon completion of the reaction, the solvent was removed by evaporation and the residue was redissolved in ether (20 mL). The organic phase was washed sequentially with saturated aqueous ammonium chloride solution (2 x 20 mL) and brine, dried over anhydrous sodium sulfate, filtered and concentrated to dryness to afford 1-(Boc-amino)-3-butene as a colorless oil (1.68 g, 100% yield).LRMS (m/z): 172 (M + 1)+.

References

[1] Patent: WO2016/46390, 2016, A1. Location in patent: Page/Page column 62
[2] Patent: WO2012/9309, 2012, A1. Location in patent: Page/Page column 56
[3] Patent: WO2010/42850, 2010, A1. Location in patent: Page/Page column 50-51; 59
[4] Patent: WO2011/44501, 2011, A2. Location in patent: Page/Page column 58; 68
[5] Patent: WO2011/44498, 2011, A1. Location in patent: Page/Page column 63-64, 72-73

Carbamic acid, 3-butenyl-, 1,1-dimethylethyl ester (9CI)(156731-40-7)Related Product Information

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