Hantzsch Ester-Mediated Synthesis of Phenanthridines under Visible-Light Irradiation

被引：7
|
作者：
Nagode, Savita B. [1 ,2 ]
Kant, Ruchir [3 ]
Rastogi, Namrata [1 ,2 ]
机构：
[1] CSIR Cent Drug Res Inst, Med & Proc Chem Div, Sec 10,Sitapur Rd,POB 173, Lucknow 226031, Uttar Pradesh, India
[2] Acad Sci & Innovat Res AcSIR, Ghaziabad 201002, India
[3] CSIR Cent Drug Res Inst, Mol & Struct Biol Div, Sec 10,Sitapur Rd,POB 173, Lucknow 226031, Uttar Pradesh, India
来源：
CHEMISTRY-AN ASIAN JOURNAL | 2020年 / 15卷 / 21期
关键词：
visible-light; benzotriazolyl chalcones; phenanthridines; Hantzsch ester; denitrogenation; IMINYL-RADICAL FORMATION; ONE-POT SYNTHESIS; METAL-FREE; CASCADE REACTION; REGIOSELECTIVE SYNTHESIS; MOLECULAR-OXYGEN; FACILE SYNTHESIS; TRIPLET-STATES; C-P; DERIVATIVES;
D O I：
10.1002/asia.202000888
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An efficient photocatalytic synthesis of phenanthridines mediated by an organo-photoredox initiator Hantzsch ester has been developed via denitrogenative intramolecular annulation of benzotriazolyl chalcones. The highly reducing photoactivated Hantzsch ester facilitates the transformation of benzotriazolyl chalcones into phenanthridinyl chalcones through photoinduced electron transfer (PET) and hydrogen atom transfer (HAT) processes. The mild reaction conditions utilizing inexpensive Hantzsch ester as photosensitizer, wide reaction scope and excellent functional group tolerance are notable attributes of the methodology.
引用
收藏
页码：3513 / 3518
页数：6
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