2024
DOI: 10.1002/adsc.202400993
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Solvent‐ and Temperature‐Switched Chemoselectivity: Controlled Synthesis of Diverse Pyrazolo[5,1‐a]isoquinolines

Chunmei Li,
Meng Xu,
Chen Wang
et al.

Abstract: Abstract. Divergent synthesis of two types of functionalized pyrazolo[5,1‐a]isoquinolines was established via a one‐pot two‐step protocol involving a tunable dehydrogenation process and deacylative oxidation accompanied by elimination of the HNO2 pathway. Key attributes of the procedure included the initial formation of C,N‐cyclic‐N’‐acyl azomethine imines and subsequent switchable chemoseletivity that either led to aroyl‐ and nitro‐substituted pyrazolo[5,1‐a]isoquinolines or proceeded via deacylative oxidatio… Show more

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