Carbamic acid, 5-hexynyl-, 1,1-dimethylethyl ester (9CI)
- Product Name
- Carbamic acid, 5-hexynyl-, 1,1-dimethylethyl ester (9CI)
- CAS No.
- 151978-58-4
- Chemical Name
- Carbamic acid, 5-hexynyl-, 1,1-dimethylethyl ester (9CI)
- Synonyms
- N-Boc-hex-5-ynylamine;1-(Boc-amino)-5-hexyne;N-Boc-hex-5-yn-1-amine;tert-butyl hex-5-ynylcarbamate;tert-butyl N-hex-5-ynylcarbamate;tert-Butyl hex-5-yn-1-ylcarbamate;Carbamic acid, N-5-hexyn-1-yl-, 1,1-dimethylethyl ester;Carbamic acid, 5-hexynyl-, 1,1-dimethylethyl ester (9CI)
- CBNumber
- CB51064147
- Molecular Formula
- C11H19NO2
- Formula Weight
- 197.27
- MOL File
- 151978-58-4.mol
Carbamic acid, 5-hexynyl-, 1,1-dimethylethyl ester (9CI) Property
- Boiling point:
- 291.0±23.0 °C(Predicted)
- Density
- 0.956±0.06 g/cm3(Predicted)
- storage temp.
- 2-8°C
- pka
- 12.81±0.46(Predicted)
- Appearance
- Colorless to light yellow Liquid
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
- Precautionary statements
-
P280Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- B704000
- Product name
- tert-Butylhex-5-yn-1-ylcarbamate
- Packaging
- 10mg
- Price
- $45
- Updated
- 2021/12/16
- Product number
- B704000
- Product name
- tert-Butylhex-5-yn-1-ylcarbamate
- Packaging
- 100mg
- Price
- $265
- Updated
- 2021/12/16
- Product number
- AS74679
- Product name
- N-Boc-hex-5-ynylamine
- Purity
- 95%
- Packaging
- 1g
- Price
- $598
- Updated
- 2021/12/16
- Product number
- AS74679
- Product name
- N-Boc-hex-5-ynylamine
- Purity
- 95%
- Packaging
- 250mg
- Price
- $256
- Updated
- 2021/12/16
- Product number
- AS74679
- Product name
- N-Boc-hex-5-ynylamine
- Purity
- 95%
- Packaging
- 5G
- Price
- $1368
- Updated
- 2021/12/16
Carbamic acid, 5-hexynyl-, 1,1-dimethylethyl ester (9CI) Chemical Properties,Usage,Production
Synthesis
15252-45-6
24424-99-5
151978-58-4
General procedure for the synthesis of tert-butyl 5-hexyn-1-ylcarbamate from hex-5-yn-1-amine and di-tert-butyl dicarbonate: N-(5-hexynyl)phthalimide (4.66 g, 20.5 mmol) was dissolved in tetrahydrofuran (THF, 250 mL) and hydrazine hydrate (410 mmol, 19.8 mL) was added. The reaction mixture was refluxed for 3 h. White precipitate formation was observed after 1 h of reaction. Upon completion of the reaction, the mixture was cooled to 8 °C and filtered. The filtrate was concentrated by evaporation to give the crude product hex-5-yn-1-amine (8) as a yellow liquid. The crude amine was dissolved in THF (14 mL), water (14 mL) was added followed by sodium bicarbonate (NaHCO3, 2.27 g, 27.0 mmol). The solution was cooled to 0 °C and di-tert-butyl dicarbonate (Boc2O, 2 M in THF solution, 8.09 mL; 16.2 mmol) was added slowly via syringe. The reaction temperature was maintained for 15 min before removing the ice bath. After the reaction was continued at room temperature for 2 h, the reaction mixture was diluted with ethyl acetate (EtOAc). The organic layer was washed sequentially with water, saturated aqueous sodium bicarbonate solution and brine. The organic phase was dried and evaporated to give a crude oily product. The crude product was purified by silica gel column chromatography using cyclohexane/ethyl acetate (92/8) as eluent to give tert-butyl 5-hexyne-1-ylcarbamate (9) 1.831 g in 45% yield as a light yellow oil.
References
[1] Bioconjugate Chemistry, 2013, vol. 24, # 9, p. 1624 - 1633
[2] Journal of the American Chemical Society, 2010, vol. 132, # 40, p. 14070 - 14072
[3] Bioorganic and Medicinal Chemistry, 2012, vol. 20, # 21, p. 6523 - 6532,10
[4] Bioorganic and Medicinal Chemistry, 2012, vol. 20, # 21, p. 6523 - 6532
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