作者:Wayne M. Best、Marie-Anne M. Fam、Martin J. Gregory、Bruno Kasum、Philip L. Keep、Sam Lazzaro、Nicole Osner、Natasha Stewart、San H. Thang、Keith G. Watson
DOI:10.1055/s-1998-1999
日期:1998.1
The first general synthesis of 4,6-disubstituted 5-pyrimidinesulfonamides is described. Treatment of 4,6-dichloro-5-benzylthiopyrimidine (3) with ethoxide or trifluoroethoxide, oxidation of the benzylthio group to a sulfonyl chloride and reaction with ammonia gave 4,6-dialkoxy-5-pyrimidinesulfonamides 5 a, b. Stepwise displacement of the trifluoroethoxy groups in 5 a gave a variety of symmetrical and non-symmetrical 4,6-disubstituted 5-pyrimidinesulfonamides 5 b - h.
本文首次描述了 4,6-二取代 5-嘧啶磺酰胺的一般合成方法。用乙醇或三氟乙醇处理 4,6-二氯-5-苄硫基嘧啶 (3),将苄硫基氧化为磺酰氯,然后与氨反应,得到 4,6-二烷氧基-5-嘧啶磺酰胺 5 a、b。逐步置换 5 a 中的三氟乙氧基,可得到各种对称和非对称的 4,6-二取代 5-嘧啶磺酰胺 5 b-h。