| Identification | Back Directory | [Name]
7-BROMO-BENZO[B]THIOPHENE | [CAS]
1423-61-6 | [Synonyms]
7-Bromobenzothiophene
7-bromo-1-benzothiophene
7-BROMO-BENZO[B]THIOPHENE
Benzo[b]thiophene, 7-broMo-
7-Bromobenzo[b]thiophene >
7-Bromobenzo[b]thiophene
Brexpiprazole Impurity 7-bromobenzo[b]thiophene | [Molecular Formula]
C8H5BrS | [MDL Number]
MFCD06657729 | [MOL File]
1423-61-6.mol | [Molecular Weight]
213.09 |
| Chemical Properties | Back Directory | [Boiling point ]
109°C/10mmHg(lit.) | [density ]
1.649±0.06 g/cm3(Predicted) | [refractive index ]
1.6600-1.6640 | [storage temp. ]
Keep in dark place,Sealed in dry,Room Temperature | [form ]
clear liquid | [color ]
Light yellow to Yellow to Orange | [InChI]
InChI=1S/C8H5BrS/c9-7-3-1-2-6-4-5-10-8(6)7/h1-5H | [InChIKey]
NOICDPBEDNMHQK-UHFFFAOYSA-N | [SMILES]
C12=C(Br)C=CC=C1C=CS2 |
| Hazard Information | Back Directory | [Uses]
7-Bromobenzo[b]thiophene is a useful research chemical used in the preparation of di(chloro)-N-[(benzo[b]thienyl)sulfonyl]benzamide. | [Synthesis]
Preparation of 7-bromobenzo[b]thiophene of Scheme I, Step B: Chlorobenzene (100 mL) and polyphosphoric acid (30.4 g, PPA) were mixed and heated to reflux. Within 20 min, 2-(2-bromophenylthio)acetaldehyde diethyl acetal (13.7 g, 44.88 mmol, Scheme I, Step A) was dissolved in chlorobenzene (20 mL) and slowly added dropwise to the refluxed mixture. The reaction mixture was kept at reflux for 4 hours and subsequently cooled. The solvent was removed by decantation and toluene (2 x 50 mL) was added to the residue, stirred thoroughly and decanted again. The toluene extract was concentrated under vacuum and the residue was dissolved in a mixture of ethyl acetate and water. The organic phase was washed with saturated sodium bicarbonate solution, dried over anhydrous sodium sulfate, filtered and concentrated to give 7-bromobenzo[b]thiophene (8.91 g, 93% yield). | [References]
[1] Patent: US6436964, 2002, B1
[2] Patent: US6465453, 2002, B1
[3] Patent: US6353008, 2002, B1. Location in patent: Page column 26
[4] Bioorganic and Medicinal Chemistry, 2015, vol. 23, # 14, p. 3933 - 3937
[5] Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999), 1982, p. 1489 - 1492 |
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