Fused Azolium Salts XVIII [1]. Synthesis and Reactivity of a Novel Fused Heteroaromatic System: [1,2,3]Triazolo[1,5-b]isoquinolinium Salts
摘要:
Oxidative cyclization of 3-isoquinolyl ketone hydrazones afforded the novel tricyclic heteroaromatic [1,2,3]triazolo[1,5-b]isoquinolinium salts. The reactivity of the ring system towards nucleophiles proved to be regioselective. Secondary amines induced ring opening of the pyridine moiety, forming a triazolyl substituted benzaldehyde derivative; sodium borohydride afforded partially reduced derivatives of the parent compound.
Transition-Metal-Free One-Pot Tandem Synthesis of 3-Ketoisoquinolines from Aldehydes and Phenacyl Azides
作者:Budaganaboyina Prasad、Mandalaparthi Phanindrudu、Dharmendra Kumar Tiwari、Ahmed Kamal
DOI:10.1021/acs.joc.9b01534
日期:2019.10.4
An efficient and transition-metal-free strategy for the synthesis of 3-keto-isoquinolines in one pot has been developed from the easily accessible 2-(formylphenyl)acrylates and phenacyl azides. Various substituted aldehydes and phenacyl azides were successfully employed in this transformation to furnish a variety 3-keto-isoquinolines in very good yields. A number of controlled experiments were conducted