Dabco → HCID 20610368, compound

Participants

Reaction Conditions

Reaction Steps

o a solution of 5-hydroxy-isophthalic acid dimethyl ester (D42) (21 g, 100 mmol, 1 equiv) in DMF (300 ml) at room temperature was added DABCO (14.6 g, 130 mmol, 1.3 equiv) followed by dimethylthiocarbamoyl chloride (14.8 g, 120 mmol, 1.2 equiv). The resulting mixture was stirred at room temperature for 16 h and at 60° C. for 2 h, then cooled to room temperature and concentrated in vacuo. The residue was partitioned between AcOEt and H2O and the aqueous phase re-extracted with AcOEt. The combined organic solution was washed sequentially with 5% aqueous citric acid solution, 2N aqueous NaOH solution and brine, then dried over MgSO4 and concentrated in vacuo to give 5-dimethylthiocarbamoyloxy-isophthalic acid dimethyl ester (D55) (23.5 g, 79%) as a pale yellow oil. [M+H]+=298.0, RT=3.06 min

Provenance & Evidence