Ethanol → HCID 23047249, compound

Participants

Reaction Steps

2.9 g (10 mmol) 1,3-dihydro-5(3,6-dihydro-6-methyl-2-oxo-2H-1,3,4 thiadiazin-5-yl)-3,3 dimethyl-2H-indol-2-one (Example 3), 0.4 g (10 mmol) sodium hydroxyde and 100 ml ethanol were refluxed 30mn. After evaporation of the solvent, the residue was dissolved in 50 ml DMF and 1.86 g (10 mmol) p-nitrobenzoyl chloride were added while keeping the temperature under 30° C. The mixture was stirred 2 hrs at room temperature, diluted with 100 ml water, extracted with ethyl acetate. The organic layers were washed with brine and dried over magnesium sulfate. The residue was purified by column chfomatography on silica (eluent:ethylacetate/hexane:1/1) and the major fraction was triturated in isopropyl ether and dried under vacuum.

Provenance & Evidence