Silver-Catalyzed Synthesis of 5-Amino-4-sulfonyl Pyrazoles from 1,2-Diaza-1,3-dienes

被引:0
|
作者
Jaiswal, Arvind Kumar [1 ]
Kushawaha, Ajay Kishor [1 ]
Katiyar, Sarita [1 ,2 ]
Ansari, Alisha [1 ,2 ]
Bhatt, Hemlata [1 ,2 ]
Kant, Ruchir [3 ]
Sashidhara, Koneni V. [1 ,2 ,4 ]
机构
[1] CSIR Cent Drug Res Inst, Med & Proc Chem Div, Lucknow 226031, Uttar Pradesh, India
[2] Acad Sci & Innovat Res, Ghaziabad 201002, Uttar Pradesh, India
[3] CSIR Cent Drug Res Inst, Mol & Struct Biol, Lucknow 226031, India
[4] CSIR Cent Drug Res Inst, Sophisticated Analyt Instrument Facil & Res, Lucknow 226031, Uttar Pradesh, India
关键词
SULFONYL; ALKYNES; IODINE; DESIGN; METAL;
D O I
10.1021/acs.joc.4c01936
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A facile and dependable synthetic route for 5-amino-4-sulfonyl pyrazoles, which are substantially important in pharmaceuticals, is highly desirable. This work presents a novel cascade reaction for their efficient synthesis. The approach utilizes silver as a catalyst for C(sp2)-H sulfonylation of readily available starting materials 1,2-diaza-1,3-dienes with sulfinate salts, followed by intramolecular cascade cyclization annulation to afford the desired 5-amino-4-sulfonyl pyrazoles in good to excellent yields under mild conditions.
引用
收藏
页码:16033 / 16037
页数:5
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