A number of 4-arylisothiazol-3-yl O-thioesters have been prepared utilising the S-thioester →O-thioester rearrangements of the 4-aryl-5-thioxo-3-isothiazolin-3-yl S-thioesters (1). Reactions of the isothiazolines with acylation reagents (e.g. acyl chloride or acid anhydride) in the presence of boron trifluoride afforded the 5-acylthio-4-arylisothiazol-3-yl O-thioesters (2), which were also prepared
基4- arylisothiazol-3 A号码的ö -thioesters已经制备利用小号-thioester → ø所述的重排-thioester 4-芳基-5-
硫代-3-
异噻唑啉-3-基小号-thioesters(1)。在
三氟化硼的存在下,
异噻唑啉与酰化试剂(例如酰
氯或酸酐)的反应得到了5-酰基
硫基-4-芳基
噻唑-2-基O-
硫代酯(2),该化合物也可以通过I(I)4-芳基-5-
硫代
异噻唑-3-基O-
硫酯(3)与酰
氯。
异噻唑啉与m的反应-
氯过
苯甲酸得到5,5'-二
硫代双(4-芳基
噻唑-3-基O-
硫代酸酯)(5)和4-芳基
噻唑-3-基O-
硫代酯(6)。
异噻唑啉与N-
溴代琥珀
酰亚胺的反应也可得到二
硫化物(5)。