p-Toluenesulfonic acid monohydrate → HCID 11198244, compound

Participants

Reaction Steps

Ketal 5 (0.44 g) from Example 1 was dissolved in acetone-water (30 ml, 8:2), and treated with toluene-p-sulfonic acid monohydrate (0.1 g). After the mixture had been stirred at room temperature for 16 hr it was concentrated to half of its volume and diluted with a cold half saturated sodium bicarbonate solution. The solution was cooled, filtered to give white solid compound (0.38 g, 98%), which was further crystallized from methanol. M.p. 185-87° C., purity 99% (LC-MS).

Provenance & Evidence