Hydrochloric Acid → HCID 54562540, compound

Participants

Reaction Steps

300 ml of deionized water and 50 g of potassium hydroxide are placed into a 3 l flask. The mixture is stirred until dissolution, then 150 ml of ethanol and 100 g of 2,3-dimethoxybenzaldehyde are added. After that, 60.0 g of pyruvic acid are dropped therein (in about 30 minutes) and the mixture is stirred for about 15 minutes at a temperature from 35° to 40° C., then it is poured into 6500 ml of water and brought to markedly acid pH with about 140 ml of concentrated HCl. The mixture is cooled with stirring for about 30 minutes, then filtered washing with water and dried under Vacuum at 60° C. to obtain an orange solid. Yield: 115 g, 81% (moles), 115% (weight); TLC: methylene chloride/methanol/acetic acid 80/20/2; Rf=0,5; M.P.: 136°-138° C.

Provenance & Evidence