16672-12-1Relevant academic research and scientific papers
Oxadiazolone-Enabled Synthesis of Primary Azaaromatic Amines
Yu, Xiaolong,Chen, Kehao,Yang, Fan,Zha, Shanke,Zhu, Jin
, p. 5412 - 5415 (2016)
Despite their tremendous synthetic and pharmaceutical utility, primary azaaromatic amines remain elusive for access based on a generally applicable C-H functionalization strategy. An oxadiazolone-enabled approach is reported for convenient entry into N-unsubstituted 1-aminoisoquinolines through Co(III)-catalyzed redox-neutral, step-, atom-, and purification-economic C-H functionalization with alkynes. A 15N labeling experiment reveals the effectiveness of both oxadiazolone N atoms as directing sites. The installed primary amine can be harnessed as a synthetically useful handle for attachment of divergent appendages.
Cobalt-Catalyzed, Directed Intermolecular C-H Bond Functionalization for Multiheteroatom Heterocycle Synthesis: The Case of Benzotriazine
Wu, Weiping,Fan, Shuaixin,Li, Tielei,Fang, Lili,Chu, Benfa,Zhu, Jin
supporting information, p. 5652 - 5657 (2021/08/01)
Transition-metal-catalyzed, directed intermolecular C-H bond functionalization is synthetically useful but heavily underexplored in multiheteroatom heterocycle synthesis. Herein we report a cobalt catalytic method for the formation of a three-nitrogen-bearing benzotriazine scaffold via the coupling of arylhydrazine and oxadiazolone. This synthetic protocol features a low-cost base metal catalyst, a maximum number of heteroatoms built into a heterocycle, a distinct synthetic logic for benzotriazines, a superior step economy, and a broad substrate scope.
5-MEMBERED RING HETEROAROMATIC DERIVATIVES HAVING NPY Y5 RECEPTOR ANTAGONISTIC ACTIVITY
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Paragraph 0230-0231, (2014/03/24)
This invention provides new compounds having NPY Y5 antagonistic activity. The present inventors found that a compound of the formula (I): wherein R1 is substituted or unsubstituted alkyl or the like; p, q and r are each independently 0 or 1; r
