反应详情

At 0° C., 4-chlorobenzenethiol (5.45 g, 38.2 mmol), triphenylphosphine (11.1 g, 41.6 mmol) and diisopropyl azodicarboxylate (8.16 ml, 41.6 mmol) were sequentially added to a tetrahydrofuran (150 ml) solution of 2,5-difluorobenzyl alcohol (5.00 g, 34.7 mmol). The reaction mixture was stirred at room temperature for 4 days, followed by concentration. The residue thus obtained was purified by silica gel column chromatography (1% ethyl acetate-hexane) to give 2-[(4-chlorophenyl)thiomethyl]-1,4-difluorobenzene (2.68 g, 29%) as a colorless oil.

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2. customThe residue thus obtained
3. customwas purified by silica gel column chromatography (1% ethyl acetate-hexane)