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CAS No.: | 104632-25-9 |
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Name: | Pramipexole dihydrochloride |
Article Data: | 24 |
Molecular Structure: | |
Formula: | C10H17N3S.2(HCl) |
Molecular Weight: | 284.253 |
Synonyms: | 2,6-Benzothiazolediamine,4,5,6,7-tetrahydro-N6-propyl-, dihydrochloride, (6S)- (9CI);2,6-Benzothiazolediamine, 4,5,6,7-tetrahydro-N6-propyl-, dihydrochloride, (S)-;SND 19; |
EINECS: | 629-842-2 |
Melting Point: | 288-290 °C |
Boiling Point: | 378 °C at 760 mmHg |
Flash Point: | 182.4 °C |
Appearance: | white crystalline powder |
PSA: | 79.18000 |
LogP: | 4.15830 |
(S)‑2‑amino‑6‑propionamido‑4,5,6,7‑tetrahydrobenzothiazole
pramipexole dihydrochloride
Conditions | Yield |
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Stage #1: (S)‑2‑amino‑6‑propionamido‑4,5,6,7‑tetrahydrobenzothiazole With potassium borohydride; triethylamine; lithium chloride In tetrahydrofuran at 20℃; for 7h; Inert atmosphere; Reflux; Stage #2: With hydrogenchloride at -5 - 20℃; for 5h; Reagent/catalyst; Solvent; Temperature; Reflux; | 78.2% |
Stage #1: (S)‑2‑amino‑6‑propionamido‑4,5,6,7‑tetrahydrobenzothiazole With chloro-trimethyl-silane In dichloromethane at 0 - 15℃; Inert atmosphere; Stage #2: With lithium aluminium tetrahydride In tetrahydrofuran; dichloromethane at -10 - 0℃; Inert atmosphere; | 72% |
Multi-step reaction with 2 steps 1.1: sodium tetrahydroborate; boron trifluoride diethyl etherate / tetrahydrofuran / 4 h / 0 - 50 °C 1.2: 0.17 h / 10 °C 2.1: hydrogenchloride / water; methanol / 0.75 h / 25 - 30 °C View Scheme | |
Stage #1: (S)‑2‑amino‑6‑propionamido‑4,5,6,7‑tetrahydrobenzothiazole With sodium bis(2-methoxyethoxy)aluminium dihydride In toluene at 80℃; for 6h; Stage #2: With hydrogenchloride In water; isopropyl alcohol at 20℃; under 75.0075 Torr; for 1h; Temperature; Pressure; |
2-amino-6-propylamino-4,5,6,7-tetrahydrobenzothiazole p-toluenesulfonic acid
pramipexole dihydrochloride
Conditions | Yield |
---|---|
With acetyl chloride In isopropyl alcohol at 5 - 20℃; for 12.5h; | 86% |
Stage #1: 2-amino-6-propylamino-4,5,6,7-tetrahydrobenzothiazole p-toluenesulfonic acid With hydrogenchloride In water at 0℃; for 0.25h; Stage #2: With sodium hydroxide In water at 0℃; for 3h; | 78% |
(S)-t-butyl-2-amino-4,5,6,7-tetrahydrobenzo[d]thiazol-6-yl(propyl)carbamate
pramipexole dihydrochloride
Conditions | Yield |
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With hydrogenchloride In tetrahydrofuran at 20 - 25℃; for 12h; | 85% |
pramipexole
pramipexole dihydrochloride
Conditions | Yield |
---|---|
With hydrogenchloride In water; acetone at 0 - 3℃; for 2h; pH=1.5; Product distribution / selectivity; | 98% |
With hydrogenchloride In water; isopropyl alcohol at 20℃; for 2h; | 95.8% |
With hydrogenchloride In water; acetone at 20℃; for 3h; Large scale; | 90.9% |
pramipexole (HCl)
pramipexole dihydrochloride
Conditions | Yield |
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With hydrogenchloride; water In methanol at 3 - 8℃; for 2h; | 36% |
(6S,7S)-2-amino-7-hydroxy-6-(propylamino)-4,5,6,7-tetrahydrobenzothiazole
pramipexole dihydrochloride
Conditions | Yield |
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Stage #1: (6S,7S)-2-amino-7-hydroxy-6-(propylamino)-4,5,6,7-tetrahydrobenzothiazole With hydrogenchloride; formic acid In water Stage #2: With hydrogen; palladium on activated carbon In water Product distribution / selectivity; | 87% |
propionaldehyde
(S)-4,5,6,7-tetrahydrobenzo[d]thiazol-2,6-diamine
pramipexole dihydrochloride
Conditions | Yield |
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Stage #1: propionaldehyde; (S)-4,5,6,7-tetrahydrobenzo[d]thiazol-2,6-diamine With sulfuric acid In methanol at 0℃; Stage #2: With sodium tetrahydroborate In methanol at 0 - 20℃; Stage #3: With hydrogenchloride In ethanol at 0℃; for 8h; |
(S)-4,5,6,7-tetrahydrobenzo[d]thiazol-2,6-diamine
pramipexole dihydrochloride
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: triethylamine / methanol / 1.5 h / 10 - 20 °C 2.1: sodium tetrahydroborate; boron trifluoride diethyl etherate / tetrahydrofuran / 4 h / 0 - 50 °C 2.2: 0.17 h / 10 °C 3.1: hydrogenchloride / water; methanol / 0.75 h / 25 - 30 °C View Scheme | |
Multi-step reaction with 2 steps 1.1: N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide 2.1: hydrogenchloride / water / 0.25 h / 0 °C 2.2: 3 h / 0 °C View Scheme | |
Multi-step reaction with 3 steps 1: sulfuric acid; sodium tetrahydroborate / dichloromethane; methanol / 3 - 8 °C 2: hydrogenchloride / water 3: hydrogenchloride; water / methanol / 2 h / 3 - 8 °C View Scheme |
N-(4-oxocyclohexyl)acetamide
pramipexole dihydrochloride
Conditions | Yield |
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Multi-step reaction with 7 steps 1.1: bromine; acetic acid / 0.75 h / 25 - 35 °C 1.2: 3 h / Reflux 2.1: water; sulfuric acid / 10 h / Reflux 2.2: 1.5 h / 0 - 30 °C 3.1: water / 70 °C / Reflux; Resolution of racemate 4.1: hydrogenchloride / water / carbon treatment 4.2: 1.5 h / 25 - 30 °C 5.1: triethylamine / methanol / 1.5 h / 10 - 20 °C 6.1: sodium tetrahydroborate; boron trifluoride diethyl etherate / tetrahydrofuran / 4 h / 0 - 50 °C 6.2: 0.17 h / 10 °C 7.1: hydrogenchloride / water; methanol / 0.75 h / 25 - 30 °C View Scheme | |
Multi-step reaction with 3 steps 1.1: bromine / water / 2 h / 45 - 80 °C / Large scale 1.2: 3 h / Reflux; Large scale 2.1: ethanol / 5 h / 50 °C 3.1: sodium bis(2-methoxyethoxy)aluminium dihydride / toluene / 6 h / 80 °C 3.2: 1 h / 20 °C / 75.01 Torr View Scheme |
2,6-diamino-4,5,6,7-tetrahydro-benzthiazole
pramipexole dihydrochloride
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1.1: water / 70 °C / Reflux; Resolution of racemate 2.1: hydrogenchloride / water / carbon treatment 2.2: 1.5 h / 25 - 30 °C 3.1: triethylamine / methanol / 1.5 h / 10 - 20 °C 4.1: sodium tetrahydroborate; boron trifluoride diethyl etherate / tetrahydrofuran / 4 h / 0 - 50 °C 4.2: 0.17 h / 10 °C 5.1: hydrogenchloride / water; methanol / 0.75 h / 25 - 30 °C View Scheme |
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The CAS registry number of Pramipexole dihydrochloride is 104632-25-9. The IUPAC name is (6S)-6-N-propyl-4,5,6,7-tetrahydro-1,3-benzothiazole-2,6-diamine dihydrochloride. In addition, the molecular formula is C10H17N3S.2(HCl) and the molecular weight is 284.25. It is also called 2,6-benzothiazolediamine, 4,5,6,7-tetrahydro-N6-propyl-, dihydrochloride, (S)-. What's more, it is a kind of white crystalline powder and belongs to the classes of Antiparkinsonian; All Inhibitors; Intermediates & Fine Chemicals; Pharmaceuticals; APIs.
Physical properties about this chemical are: (1)ACD/LogP: 1.42; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -1.97; (4)ACD/LogD (pH 7.4): -0.53; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1.6; (9)#H bond acceptors: 3; (10)#H bond donors: 3; (11)#Freely Rotating Bonds: 3; (12)Polar Surface Area: 47.61 Å2; (13)Flash Point: 182.4 °C; (14)Enthalpy of Vaporization: 62.58 kJ/mol; (15)Boiling Point: 378 °C at 760 mmHg; (16)Vapour Pressure: 6.49E-06 mmHg at 25°C.
You can still convert the following datas into molecular structure:
(1)SMILES: Cl.Cl.n1c2c(sc1N)C[C@@H](NCCC)CC2
(2)InChI: InChI=1/C10H17N3S.2ClH/c1-2-5-12-7-3-4-8-9(6-7)14-10(11)13-8;;/h7,12H,2-6H2,1H3,(H2,11,13);2*1H/t7-;;/m0../s1
(3)InChIKey: QMNWXHSYPXQFSK-KLXURFKVBV