p-Toluenesulfonic acid monohydrate → HCID 2772320, compound

Participants

Reaction Steps

To a solution of 0.399 g (0.001 mol) of compound I obtained according to Example 2, in 5 ml of iospropyl alcohol, there was added a solution of 0.38 g (0.002 mol) of p-toluenesulphonic acid monohydrate in 3 ml of the same solvent. The mixture was thoroughly mixed, and 40 ml of absolute ether was added thereto. The precipitated ditosylate was filtered off and dried in vacuum to yield 0.742 g (~100%) of the product. Mp. 137°-138° C.

Provenance & Evidence