Electron donor-acceptor complex enabled photocascade strategy for the synthesis of trans-dihydrofuro[3,2-c]chromen-4-one scaffolds via radical conjugate addition of pyridinium ylide

被引：0

作者：

Dey, Sovan ^{[1
]}

Das, Arindam ^{[1
]}

Yadav, Ram Naresh ^{[2
]}

Boruah, Palash Jyoti ^{[3
]}

Sarkar, Koushik ^{[4
]}

Paul, Amit Kumar ^{[5
]}

Hossain, Md. Firoj ^{[1
]}

机构：

[1] Univ North Bengal, Dept Chem, Darjeeling 734013, India

[2] Veer Bahadur Singh Purvanchal Univ, Fac Engn & Technol, Dept Chem, Jaunpur 222003, UP, India

[3] NIT, Dept Chem, Shillong 793003, Meghalaya, India

[4] IISER Kolkata, Dept Chem Sci, Nadia 741246, WB, India

[5] Bose Inst, Unified Acad Campus, EN 80,Sect 5, Kolkata 700091, India

来源：

CHEMICAL COMMUNICATIONS | 2024年 / 60卷 / 97期

关键词：

CATALYSIS;

D O I：

10.1039/d4cc04720f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A visible-light-induced photocascade strategy is disclosed for the synthesis of trans-dihydrofuro[3,2-c]chromen-4-one scaffolds. The photocascade consists of electron donor-acceptor (EDA) complex enabled formation of arylidene coumarinone, followed by 1,4-radical conjugate addition (1,4-RCA) of an in situ generated pyridinium ylide radical (PyYR) towards diastereoselective formation of the trans-dihydrofuro[3,2-c]chromen-4-one scaffold in good to excellent yield. Thorough mechanistic investigations comprising photophysical, spectroscopic, electrochemical and DFT studies provide further insights into the reaction mechanism.

引用

页数：5