Sodium Hydroxide → HCID 12412923, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 570 g of 6-[2-hydroxy-4-(4-methyl-5-phenyl-1,2,3-triazol-2-yl)-phenyl]-2,4-dioxo-1,3,5-trimethyl-hexahydro-s-triazine, 2,940 ml of water and 560 g of sodium hydroxide is heated for 22 hours at 102° C. It is then cooled to 15° C. and the sodium salt which has separated out is filtered off and introduced into a mixture of 700 g of ice, 700 ml of water and 237 ml of 37% strength hydrochloric acid. After stirring for four hours, the salicylaldehyde produced is filtered off, washed with ice water and dried at 80° C. This gives 353 g of product of melting point 121°-123° C., the product being 98.6% pure, according to analysis. The yield is 89% of theory.

Provenance & Evidence