在这里,我们报告了伊红 Y 作为 Minisci 型酰化反应的双模块催化剂。发现在光激发的曙红 Y 和N-杂芳烃之间形成有机激发物是优化条件下光酸催化的稳定因素。采用光谱研究,例如稳态荧光猝灭和动态寿命猝灭实验,以更好地了解曙红 Y 作为光氧化还原催化剂和光酸的作用。原料醛被用作酰基自由基前体,用于与各种含氮杂环进行 C-C 键形成反应。
Dioxygen-Mediated Decarbonylative CH Alkylation of Heteroaromatic Bases with Aldehydes
作者:Subhasis Paul、Joyram Guin
DOI:10.1002/chem.201503809
日期:2015.12.1
An operationally simple and economical method for the direct alkylation of heteroaromaticbases employing readily available aldehydes as alkyl radical precursors and molecular oxygen as a reagent is presented. This simple transformation demonstrates a broad substrate scope with respect to aldehydes and nitrogen heterocycles, enabling the introduction of several medicinally important yet challenging
Transition metal-free acylation of isoquinoline, quinoline, and quinoxaline derivatives has been developed employing a cross dehydrogenative coupling (CDC) reaction with aldehydes using substoichiometric amount of TBAB (tetrabutylammonium bromide, 30 mol %) and K2S2O8 as an oxidant. This intermolecular acylation of electron-deficient heteroarenes provides an easy access and a novel acylation method of heterocyclic compounds. The application of this CDC strategy for acylation strategy has been illustrated in synthesizing isoquinoline-derived natural products.
Palladium-Catalyzed Minisci Reaction with Simple Alcohols
作者:Camille A. Correia、Luo Yang、Chao-Jun Li
DOI:10.1021/ol201774b
日期:2011.9.2
A palladium-catalyzed coupling of N-heterocycles with simple alcohols was achieved. The reaction is initiated by peroxide and does not require the use of stoichlometric acid for activation of the heterocycle.
Synthesis of 1-acylisoquinolines from isoquinoline, alcohols, and CCl4 catalyzed by iron complexes
作者:R. I. Khusnutdinov、A. R. Baiguzina、R. R. Mukminov
DOI:10.1134/s1070428010090228
日期:2010.9
Reactions of isoquinoline with normal alcohols (ethanol, 1-propanol, 1-butanol) and tetrachloromethane in the presence of iron-containing catalysts afforded 1-acylisoquinolines in 38-75% yield.