| Identification | More | [Name]
4,5,6,7-Tetrahydrothieno[3,2,c] pyridine hydrochloride | [CAS]
28783-41-7 | [Synonyms]
4,5,6,7-TETRAHYDROTHIENO[3,2,C] PYRIDINE HCL
4,5,6,7-TETRAHYDROTHIENO[3,2-C]PYRIDINE HYDROCHLORIDE
4,5,6,7-tetrahydrotieno[3,2-c]pyridinium chloride
4,5,6,7-TETRAHYDROTHIENO[3,2-C]PYRIDINE HCl(TTP)
4,5,6,7-tetrahydrothieno[3,2-c]pyridinium chloride
Tetrahydrothieno pyridine HCl
4,5,6,7-Tetrahydrothieon[3,2-C]pyridine,HCl
4,5,6,7-Tetrahydrothieon[3,2-C]pyridine,hydrochloride
6,7-Dihydro-4H-thieno[3,2-c]pyridine Hydrochloride
4,5,6,7-TET RAH YDROTHIENO[3,2-C]PYRIDE
4,5,6,7-Tetrahydrothiophene[3,2-c]pyridine hydrochloride
4,5,6,7-Tetrahydrothieno[3,2-c]pyridine hydrochloride ,98% | [EINECS(EC#)]
249-220-0 | [Molecular Formula]
C7H10ClNS | [MDL Number]
MFCD05861485 | [Molecular Weight]
175.68 | [MOL File]
28783-41-7.mol |
| Chemical Properties | Back Directory | [Appearance]
Off-White Solid | [Melting point ]
212-215°C | [storage temp. ]
Keep in dark place,Inert atmosphere,Room temperature | [solubility ]
DMSO, Methanol, Water | [form ]
Solid | [color ]
White to Off-White | [Detection Methods]
HPLC | [Major Application]
pharmaceutical | [InChI]
InChI=1S/C7H9NS/c1-3-8-5-6-2-4-9-7(1)6/h2,4,8H,1,3,5H2 | [InChIKey]
OGUWOLDNYOTRBO-UHFFFAOYSA-N | [SMILES]
C12CNCCC=1SC=C2 | [CAS DataBase Reference]
28783-41-7(CAS DataBase Reference) |
| Safety Data | Back Directory | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . | [RIDADR ]
UN2811 | [WGK Germany ]
WGK 3 | [HazardClass ]
IRRITANT | [HS Code ]
29333990 | [Storage Class]
6.1C - Combustible acute toxic Cat.3
toxic compounds or compounds which causing chronic effects | [Hazard Classifications]
Acute Tox. 3 Oral |
| Hazard Information | Back Directory | [Chemical Properties]
Off-White Solid | [Uses]
An intemediate of Clopidogrel and Prasugrel. | [Uses]
An intemediate of Clopidogrel and Prasugrel. | [Synthesis]
Example 5: Preparation of 4,5,6,7-tetrahydrothieno[3,2-c]pyridine hydrochloride
In a 2-liter four-necked flask equipped with a thermometer and a mechanical stirrer, 2-thiophene ethylamine (100 g, 0.79 mol) was added. The reaction was dissolved in dichloromethane (600 ml) at 25°C (±5°C) and stirred for 5 to 10 minutes. Subsequently, paraformaldehyde (26.4 g, 0.88 mole) was added to the reaction system and the reaction was subjected to azeotropic reflux at 40 to 45°C for 4 to 6 hours. Upon completion of the reaction, the system was cooled to room temperature and a N,N-dimethylformamide solution (200 ml) of 7% hydrochloric acid was slowly added at 25 °C (±5 °C). The reaction mixture was continued to be stirred at 70°C (±5°C) for 4 to 6 hours. Afterwards, the reaction solution was cooled to 15 °C (±2 °C) and stirred for 8 to 10 hours to promote crystallization. The solid product was collected by filtration and washed with pre-cooled dichloromethane. Finally, the product was dried under vacuum at 30 to 40 °C to afford 4,5,6,7-tetrahydrothieno[3,2-c]pyridine hydrochloride (120 g, 99% yield). | [References]
[1] Patent: WO2012/1486, 2012, A1. Location in patent: Page/Page column 18
[2] Journal of Organic Chemistry, 2015, vol. 80, # 14, p. 7019 - 7032
[3] Patent: EP1772455, 2007, A2. Location in patent: Page/Page column 9
[4] Journal of Organometallic Chemistry, 2009, vol. 694, # 13, p. 2092 - 2095
[5] Patent: US2004/24011, 2004, A1. Location in patent: Page 7 |
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