Method for synthesizing (RS)-Warfarin

A method for synthesizing (RS)-Warfarin, comprising:

• preparing a liquid mixture comprising:
• trihexyltetradecylphosphonium bromide with a concentration between 50.5% (w/w) and 53% (w/w);
• methyl salicylate with a concentration between 17.5% (w/w) and 19.5% (w/w);
• acetyl chloride with a concentration between 8.5% (w/w) and 10.5% (w/w);
• benzaldehyde with a concentration between 11.5% (w/w) and 14% (w/w);
• and
• acetone with a concentration between 6.5% (w/w) and 7.5% (w/w);
• incubating the liquid mixture at a temperature between 20° C. and 30° C. for a time duration between 26 and 34 minutes;
• and
• forming the (RS)-Warfarin by adding water to the incubated liquid mixture with a volume ratio (water:incubated liquid mixture) between 1:1 and 1.5:1.