Hydrochloric Acid → HCID 21889494, compound

Participants

Reaction Steps

The bis(4-acetyloxyphenylsulfonyl)methane in Synthesis Example 3, 4.5 g (0.011 mol), was dispersed in 49 g of dichloromethane. To the dispersion was added 2.5 g (0.016 mol) of p-toluenesulfonylazide which had been separately prepared. With stirring at room temperature, 3.0 g (0.015 mol) of 1,8-diazabicyclo[5.4.0]-7-undecene (DBU) was added to the dispersion, and after 5 minutes, 50 g of a 0.2N aqueous hydrochloric acid was added to stop reaction. The organic layer was separated and washed with 50 g of water. The organic layer was concentrated and 8 g of the residue was purified by silica gel column chromatography using dichloromethane as an elute. The thus obtained oily product was combined with 10 g of hexane for crystallization, followed by filtration and vacuum drying. There was obtained 1.5 g (yield 31%) of fine yellow crystals.

Provenance & Evidence