作者:Michael J Donaghy、Stephen P Stanforth
DOI:10.1016/s0040-4020(98)01116-8
日期:1999.1
The benzimidazoles 16a-f have been prepared from N-oxides 15a-d. Treatment of N-oxides 15c and 15d with a mixture of acetic anhydride and sodium acetate gave the corresponding acetoxy derivatives 26 and 27via a regiospecific nucleophilic substitution reaction. N-Oxides 15c and 15d were also deoxygenated by 2,3-dichloro-5,6-dicyanobenzoquinone (DDQ).
苯并咪唑16a-f已经由N-氧化物15a-d制备。用乙酸酐和乙酸钠的混合物处理N-氧化物15c和15d,通过区域特异性亲核取代反应得到相应的乙酰氧基衍生物26和27。N-氧化物15c和15d也通过2,3-二氯-5,6-二氰基苯并醌(DDQ)脱氧。