CAS No. : | 10243-15-9 | MDL No. : | MFCD01830303 |
Formula : | C9H7BrS | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | WFTBGTKQMKDPOQ-UHFFFAOYSA-N |
M.W : | 227.12 | Pubchem ID : | 821864 |
Synonyms : |
Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P280-P305+P351+P338 | UN#: | |
Hazard Statements: | H302-H315-H319-H332-H335 | Packing Group: | |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With hydrogenchloride; n-butyllithium; In diethyl ether; hexane; | A. Preparation of 2-methyl-3-bromobenzo[b]thiophene. To a solution of 15.88 g of <strong>[6287-82-7]2,3-dibromobenzo[b]thiophene</strong> in 150 ml of dry diethyl ether at 0 C. was added a solution of 20 ml of diethyl ether and 34 ml of a 1.6M solution of n-butyl lithium in hexane. After stirring for one hour at 0 C., a solution of 10.2 ml of dimethylsulfate in 20 ml of diethyl ether was added and the reaction was stirred at 0 C. for 4 hours. The mixture was allowed to warm to room temperature. After the addition of 125 ml of 1N hydrochloric acid, the reaction mixture was stirred for 15 minutes. The layers were separated and the aqueous layer was extracted with diethyl ether. The combined ether extracts were dried over magnesium sulfate and evaporated in vacuo giving an oil. The oil was cooled and it solidified. The resulting crystals were recovered by filtration providing 8.7 g of the desired subtitled intermediate, m.p. 39-40 C. Analysis for C9 H7 BrS; Calculated: C, 47.59; H, 3.11; Found: C, 48.77; H, 2.80. |
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