反应详情

温度

0 °C

Into a 500-mL 3 neck round-bottom flask purged and maintained with an inert atmosphere of nitrogen, was placed a solution of benzyl 3-(1-hydroxy-3,6,9,12-tetraoxapentadec-14-yn-15-yl)benzoate (25.2 g, 56.88 mmol, 1.00 equiv) in dichloromethane (300 mL), triethylamine (17.2 g, 170.30 mmol, 3.00 equiv). This was followed by the addition of a solution of 4-methylbenzene-1-sulfonyl chloride (16.3 g, 85.34 mmol, 1.50 equiv) in dichloromethane (100 mL) dropwise with stirring at 0° C. The resulting solution was stirred overnight at room temperature. The resulting mixture was concentrated under vacuum. The residue was applied onto a silica gel column with petroleum ether/ethyl acetate (5:1-1:1). This resulted in 31 g (91%) of benzyl 3-(1-(tosyloxy)-3,6,9,12-tetraoxapentadec-14-yn-15-yl)benzoate as a brown oil.

1. customInto a 500-mL 3 neck round-bottom flask purged
2. temperaturemaintained with an inert atmosphere of nitrogen
3. stirringThe resulting solution was stirred overnight at room temperature
4. concentrationThe resulting mixture was concentrated under vacuum
5. customThis resulted in 31 g (91%) of benzyl 3-(1-(tosyloxy)-3,6,9,12-tetraoxapentadec-14-yn-15-yl)benzoate as a brown oil