显示1-(2-羟苯基)吡咯与多种羰基化合物的缩合反应产生新的4-取代的-4 H -4-甲基吡咯并[2,1- c ] [1,4]苯并恶嗪。一些产品被进一步功能化。讨论了标题杂环系统的ir,uv和pmr光谱。1-(2-羟基苯基)吡咯与乙炔二羧酸二甲酯反应,生成3-(2-羟基苯胺基)邻苯二甲酸二甲酯。解释结果的机械原理涉及假想的Diels-Alder加合物的重排。
Palladium-catalyzed aerobic oxidative cyclizations of substituted 2-(1H-pyrrol-1-yl)phenols with isocyanides via an O–H/C–H insertion cascade have been developed. This strategy provides facile access to pyrrolo[2,1-c][1,4]benzoxazine derivatives in good to excellent yields under an O2 atmosphere. The notable features of this protocol include its mild reaction conditions, atom-economy, and broad functional
钯催化的取代 2-(1 H -pyrrol-1-yl) 苯酚与异氰化物通过O-H/C-H 插入级联反应进行了有氧氧化环化。该策略提供了在 O 2气氛下以良好至优异产率轻松获得吡咯并[2,1- c ][1,4]苯并恶嗪衍生物的途径。该协议的显着特点包括其温和的反应条件、原子经济性和广泛的官能团耐受性。
Recyclable Iridium Catalyst Supported on Porous Organic Polymer for Acceptorless Dehydrogenative Silylation: Synthesis of Ring‐Fused Oxasilacycles
alkanes or aromatics viacatalytic methods has attracted growing research interest. Herein, we report the preparation of a new iridium catalyst supported on a naphthyridine‐based porous organic polymer and its successful application in the dehydrogenative silylation of 2‐arylphenols or alcohol and hydrosilanes to access ring‐fused oxasilacycles. The synthetic method exhibits broad substrate scope and good
Brønsted Acid-Promoted Friedel–Crafts Alkylation/Cyclization of (7-Hydroxynaphthalenyl)pyrrole or (2-Hydroxyphenyl)pyrroles with Isatins for the Construction of Pyrrolospirooxindole Derivatives
An efficient trifluoroacetic acid-catalyzed cascade Friedel-Crafts alkylation/cyclization of 1-(7-hydroxynaphthalenyl)pyrrole or 1-(2-hydroxyphenyl)pyrroles with isatins has been developed, providing practical access to a variety of biologically important pyrrole-containing spirooxindoles.
Design and synthesis of multifunctional microtubule targeting agents endowed with dual pro-apoptotic and anti-autophagic efficacy