6380-08-1Relevant articles and documents
A Broad-Spectrum Catalytic Amidation of Sulfonyl Fluorides and Fluorosulfates**
Wei, Mingjie,Liang, Dacheng,Cao, Xiaohui,Luo, Wenjun,Ma, Guojian,Liu, Zeyuan,Li, Le
supporting information, p. 7397 - 7404 (2021/02/16)
A broad-spectrum, catalytic method has been developed for the synthesis of sulfonamides and sulfamates. With the activation by the combination of a catalytic amount of 1-hydroxybenzotriazole (HOBt) and silicon additives, amidations of sulfonyl fluorides and fluorosulfates proceeded smoothly and excellent yields were generally obtained (87–99 %). Noticeably, this protocol is particularly efficient for sterically hindered substrates. Catalyst loading is generally low and only 0.02 mol % of catalyst is required for the multidecagram-scale synthesis of an amantadine derivative. In addition, the potential of this method in medicinal chemistry has been demonstrated by the synthesis of the marketed drug Fedratinib via a key intermediate sulfonyl fluoride 13. Since a large number of amines are commercially available, this route provides a facile entry to access Fedratinib analogues for biological screening.
Method for preparing P-phenylenediamine from aniline
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Paragraph 0075-0126, (2020/07/21)
The invention provides a method for preparing p-phenylenediamine from aniline. The method comprises the following steps: protecting amino on aniline by using p-toluenesulfonyl, mixing the aniline withan amino donor, an oxidant and a catalyst Ru-Cu/TS-1 to carry out ammoniation reaction, and performing separation after deprotection to obtain p-phenylenediamine. According to the invention, a protecting group strategy is adopted to protect amino on aniline by p-toluenesulfonyl, meanwhile, a C-H bond of a benzene ring para-position is induced and activated, and a catalyst Ru-Cu/TS-1 is adopted for catalyzing an ammoniation reaction, so that the ammoniation efficiency and selectivity can be greatly improved, and the yield and purity of p-phenylenediamine are improved. Moreover, the reaction conditions are mild, the selectivity is good, and the method is a green and environment-friendly synthesis route.
Design and synthesis of sulfonamide-substituted diphenylpyrimidines (SFA-DPPYs) as potent Bruton's tyrosine kinase (BTK) inhibitors with improved activity toward B-cell lymphoblastic leukemia
Liu, He,Qu, Menghua,Xu, Lina,Han, Xu,Wang, Changyuan,Shu, Xiaohong,Yao, Jihong,Liu, Kexin,Peng, Jinyong,Li, Yanxia,Ma, Xiaodong
, p. 60 - 69 (2017/04/24)
A new series of diphenylpyrimidine derivatives (SFA-DPPYs) were synthesized by introducing a functional sulfonamide into the C-2 aniline moiety of pyrimidine template, and then were biologically evaluated as potent Bruton's tyrosine kinase (BTK) inhibitors. Among these molecules, inhibitors 10c, 10i, 10j and 10k displayed high potency against the BTK enzyme, with IC50 values of 1.18?nM, 0.92?nM, 0.42?nM and 1.05?nM, respectively. In particular, compound 10c could remarkably inhibit the proliferation of the B lymphoma cell lines at concentrations of 6.49?μM (Ramos cells) and 13.2?μM (Raji cells), and was stronger than the novel agent spebrutinib. In addition, the inhibitory potency toward the normal PBMC cells showed that inhibitor 10c possesses low cell cytotoxicity. All these explorations indicated that molecule 10c could serve as a valuable inhibitor for B-cell lymphoblastic leukemia treatment.
