Methanol → HCID 20388954, compound

Participants

Reaction Steps

A mixture of 31.7 g of the product of Step B, 3.2 ml of concentrated sulfuric acid and 300 ml of methanol was refluxed for 16 hours and was evaporated to dryness under reduced pressure. The residue was taken up in 100 ml of water and concentrated ammonium hydroxide was added thereto to adjust the pH to 12-13. The mixture was extracted with methylene chloride and the extracts were dried over magnesium sulfate and evaporated to dryness under reduced pressure to obtain 35 g of raw methyl 2-methyl-5-thiazole-propanoate. Reaction with hydrochloric acid resulted in the hydrochloride melting at 115° C.

Provenance & Evidence