反应详情

To a 0° C. solution of 5-[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]-1,3,4-thiadiazole-2(3H)-thione (5.16 g, 0.0159 mole) in methanol (50 ml), is added aqueous 1.00M NaOH (15.9 ml, 0.0159 mole) dropwise. After the addition is complete the solution is stirred one hour at room temperature before concentrating in vacuo. The residue is slurried in toluene and concentrated. The product is transferred from the flask to a crystallizing dish and dried in vacuo at 80° C. for 48 hours to provide 5.5 g (5.5 g theor., 100%) of 5-[3,4-bis(1,1-dimethylethyl)-4-hydroxyphenyl]-1,3,4-thiadiazole-2(3H)-thione, mono-sodium salt.

1. additionAfter the addition
2. concentrationbefore concentrating in vacuo
3. concentrationconcentrated
4. customdried in vacuo at 80° C. for 48 hours