3-Hydroperoxyphthalic acid 、 、
7,8-dihydro-2-ethyl-4-[(2'-(2-triphenylmethyl-2H-tetrazol-5-yl)biphenyl-4-yl)methoxy]-5H-thiopyrano[4,3-b]pyridine 、
水 在
苄基三乙基氯化铵 magnesium sulfate 、
methanol-dichloromethane 、 7,8-dihydro-2-ethyl-4-[(2'-triphenylmethyl-2H-tetrazol-5-yl)biphenyl-4yl)methoxy 作用下,
以
二氯甲烷 为溶剂,
反应 5.0h,
以to give 7,8-dihydro-2-ethyl-4-[(2'-triphenylmethyl-2H-tetrazol-5-yl)biphenyl-4yl)methoxy]-5H-thiopyrano[4,3b]pyridine S,S-dioxide (A) (320 mg)的产率得到7,8-dihydro-2-ethyl-4-[(2'-(2-triphenylmethyl-2H-tetrazol-5-yl)biphenyl-4-yl)methoxy]-5H-thiopyrano[4,3-b]pyridine S,S-dioxide