反应详情

36 mg (E)-N-(3-chloro-4-oxonaphthalen-1(4H)-ylidene)-thiophene-2-sulfonamide (12a) was dissolved in 3 ml THF, to which was added 11.7 mg 1-methyl-tetrazole-5-thiol. The reaction mixture was stirred at r.t. for 2 hrs and concentrated via rotavap. The residue was dissolved in dichloromethylene and triturated with hexane. The precipitate was filtered and washed with dichloromethylene/hexane (1:1) affording the title compound 28.8 mg (68.9%) as an orange-red solid, m.p.: 172° C. (dec.).

1. concentrationconcentrated via rotavap
2. dissolutionThe residue was dissolved in dichloromethylene
3. customtriturated with hexane
4. filtrationThe precipitate was filtered
5. washwashed with dichloromethylene/hexane (1:1)