反应详情

To a solution of the compound 38 (8.05 g) in toluene (98 mL) were added tetrabutylammonium bromide (1.62 g) and 2N sodium hydroxide (98 mL) at 0° C. and was added dropwise a suspension of tosyl chloride (10.5 g) in toluene (40 mL). The solution temperature was risen to room temperature and the solution was stirred for 1 hour. A solution of 1-phenyl-1H-tetrazole-5-thiol (10.74 g) in toluene was added thereto and the solution was stirred at 60° C. for 3.5 hours. The reaction solution was extracted with tert-butoxymethyl. The organic layer was washed with brine, dried over anhydrous magnesium sulfate and concentrated. The obtained residue was purified by Yamazen Parallel Prep (Brand name; column: 3 L, inject column: 2 L, n-hexane:ethyl acetate=81:19) to give the title compound (14.15 g) having the following physical data.

1. additionwas added dropwise
2. customwas risen to room temperature
3. stirringthe solution was stirred at 60° C. for 3.5 hours
4. extractionThe reaction solution was extracted with tert-butoxymethyl
5. washThe organic layer was washed with brine
6. dry with materialdried over anhydrous magnesium sulfate
7. concentrationconcentrated
8. customThe obtained residue was purified by Yamazen Parallel Prep (Brand name; column: 3 L, inject column: 2 L, n-hexane:ethyl acetate=81:19)