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CAS No. : | 136350-66-8 | MDL No. : | MFCD00273344 |
Formula : | C8H5Br3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | WLRQSEXHEFWAJG-UHFFFAOYSA-N |
M.W : | 340.84 | Pubchem ID : | 11393665 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P280-P305+P351+P338-P304+P340 | UN#: | |
Hazard Statements: | H302 | 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 |
---|---|---|
49% | General procedure: A mixture of gem-dibromoalkene 1 (0.68 mmol), Cs2CO3 (2.4 mmol) and DMSO (2 ml) was stirred at 115oC for 15 h. After 1 was completely consumed, iodobenzene (0.4 mmol) and Pd/C (5 mol%) were addedand the reaction was deaerated with nitrogen gas and stirred at 80 oC for 25 h. After finished, the reactionwas cooled down to room temperature and diluted with ethyl acetate and water for extraction. Thecombined organic phase from three time extraction was dried over anhydrous MgSO4. After removal ofthe solvent, the residue was subjected to column chromatography on silica gel to obtain alkyne 3 in highpurity. |