p-Toluenesulfonic acid → HCID 56619410, compound

Participants

Reaction Steps

1-p-Chlorophenacyl-2-hydroxy-3,3,3-trichloropropane (450 mg) was dissolved in benzene and p-toluene sulphonic acid monohydrate (40 mg) added. The solution was refluxed with a Dean and Stark apparatus and any reaction followed by tlc. After 5 hours refluxing tlc revealed that only starting material was present. The solution was treated with a second portion of p-toluene sulphonic acid (100 mg) and further refluxed for 5 hours. The solution was allowed to stand over 60 hours and evaporated to dryness. tlc Analysis (10% Et.AC./petrol) revealed a new product (Rf 0.8) with no starting material remaining. The solution was taken up in ethyl acetate and passed down a short alumina column (to remove pTSA). Elution with 25% Et.Ac./petrol yielded the product. Yield 200 mg.

Provenance & Evidence