| Identification | Back Directory | [Name]
N-(TERT-BUTOXYCARBONYL)-1 H-PYRAZOLE-1-CARBOXAMIDINE | [CAS]
152120-61-1 | [Synonyms]
N-Boc-pyrazoL
1-(N-Boc-carb
e-1-carboxamidine
N-Boc-1-guanylpyrazole
1-(N-Boc-amidino)pyrazole
N-Boc-pyrazole-1-carboxaMidine
H-pyrazole-1-carboxamidine HCl
Boc-1H-pyrazole-1-carboxamidine
N-BOC-1H-PYRAZOLE-1-CARBOXAMIDINE
N-Boc-1H-pyrazole-1-carboximidamide
N-tert-Butoxycarbonyl-1-amidinopyrazole
N-Boc-1H-pyrazole-1-carboxaMidine, 98+%
1-[N-(tert-Butoxycarbonyl)amidino]pyrazole
N-Boc-1H-pyrazole-1-carboximidamide≥ 99%(HPLC)
N-(T-BUTOXYCARBONYL)-1H-PYRAZOLE-1-CARBOXAMIDINE
1-[N-(tert-Butoxycarbonyl)carbamimidoyl]pyrazole
N-(tert-butoxycarbonyl)-1H-pyrazole-1-carboxamidi
tert-butyl [amino(1H-pyrazol-1-yl)methyl]carbamate
tert-Butyl N-(1H-pyrazole-1-carboximidoyl)carbamate
N-(TERT-BUTOXYCARBONYL)-1 H-PYRAZOLE-1-CARBOXAMIDINE
tert-butyl N-(amino-pyrazol-1-yl-methylene)carbamate
tert-butyl N-(amino-pyrazol-1-ylmethylidene)carbamate
tert-Butyl (amino(1H-pyrazol-1-yl)methylene)carbamate
(NE)-N-[amino-(1-pyrazolyl)methylene]carbamic acid te
N-(tert-Butoxycarbonyl)-1H-pyrazole-1-carboximidamide
N-(tert-Butoxycarbonyl)-1H-pyrazole-1-carboxamidine >
tert-butyl (NZ)-N-(amino-pyrazol-1-yl-methylene)carbamate
tert-butyl (NE)-N-(amino-pyrazol-1-yl-methylene)carbamate
tert-butyl (NE)-N-(amino-pyrazol-1-ylmethylidene)carbamate
tert-butyl (NZ)-N-(amino-pyrazol-1-ylmethylidene)carbamate
tert-Butyl [(1E)-amino(1H-pyrazol-1-yl)methylene]carbamate
N-[amino-(1-pyrazolyl)methylene]carbamic acid tert-butyl ester
2-Methyl-2-propanyl [aMino(1H-pyrazol-1-yl)Methylene]carbaMate
(NZ)-N-[amino-(1-pyrazolyl)methylene]carbamic acid tert-butyl ester
CarbaMic acid, N-(iMino-1H-pyrazol-1-ylMethyl)-, 1,1-diMethylethyl ester
N-(tert-Butoxycarbonyl)-1H-pyrazole-1-carboxamidine
Carbamic acid, (imino-1H-pyrazol-1-ylmethyl)-, 1,1-dimethylethyl ester (9CI) | [Molecular Formula]
C9H14N4O2 | [MDL Number]
MFCD00216663 | [MOL File]
152120-61-1.mol | [Molecular Weight]
210.23 |
| Chemical Properties | Back Directory | [Melting point ]
97-101 °C(lit.)
| [density ]
1.21 | [storage temp. ]
2-8°C | [form ]
powder to crystal | [pka]
9.15±0.46(Predicted) | [color ]
White to Almost white | [BRN ]
6141956 | [InChIKey]
IGSFMHYSWZUENI-UHFFFAOYSA-N | [CAS DataBase Reference]
152120-61-1 |
| Hazard Information | Back Directory | [Chemical Properties]
White to off-white crystalline powder | [Uses]
peptide synthesis | [Synthesis]
GENERAL STEPS: 1H-pyrazole-1-carboxamidine hydrochloride (9.0 g, 61.5 mmol, 1.0 eq.) and 9.0 mL of water were added to a solution of di-tert-butyl dicarbonate (13.4 g, 61.5 mmol) in acetone (45 mL) at room temperature. Subsequently, a solution of K2CO3 (4.24 g, 30.6 mmol, 0.5 eq.) in water (12.0 mL) was added slowly dropwise for 30 minutes. After 2 hours of reaction, di-tert-butyl dicarbonate (1.35 g, 6 mmol, 0.1 equiv) was added supplementally and the reaction mixture was stirred overnight. After completion of the reaction, the acetone was removed by distillation under reduced pressure. The resulting white solid was dissolved in 30.0 mL of water and stirred at 0 °C for 30 min. The precipitated tert-butyl (imino(1H-pyrazol-1-yl)methyl)carbamate was collected by filtration, washed sequentially with water and hexanes, and finally dried under vacuum to afford N-Boc-1H-pyrazole-1-carboxamidine as a colorless solid (11.37 g, 88% yield). The product was characterized by 1H NMR (CDCl3, 400MHz): δ 9.06 (brs, 1H), 8.45 (d, J = 3.2Hz, 1H), 7.67 (d, J = 0.8Hz, 1H), 7.59 (brs, 1H), 6.39 (dd, J = 2.8, 1.6Hz, 1H), 1.54 (s, 9H). | [References]
[1] Tetrahedron Letters, 2007, vol. 48, # 13, p. 2357 - 2359
[2] Organic and Biomolecular Chemistry, 2013, vol. 11, # 24, p. 3943 - 3948
[3] Patent: WO2015/147950, 2015, A2. Location in patent: Page/Page column 38
[4] Patent: US2013/79324, 2013, A1. Location in patent: Paragraph 0827; 0828
[5] Tetrahedron Letters, 1993, vol. 34, # 21, p. 3389 - 3392 |
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