鉴于 2-羟基联芳基化合物在有机化学、药物化学和材料化学中的重要作用,合成这种常见基序的简明方法非常有价值。在寻求扩展合成化学家在这方面的词典时,我们开发了一种使用现成的硼酸对苯酚和萘酚进行邻位芳基化的权宜之计和通用策略。我们的方法依赖于通过伸缩的 B 到 Bi 转金属和氧化从工作台稳定的 Bi(III) 前体原位生成独特的反应性 Bi(V) 芳基化剂。通过利用与传统金属催化歧管正交的反应性,多种芳基和杂芳基伙伴可以在温和条件下与苯酚和萘酚快速偶联。芳基化后,Bi(III)前体的高产率回收允许其在后续反应中有效地重复使用。对该方法的每个关键步骤的机械询问为其实际应用提供了信息,并提供了对有机铋化合物未充分利用的反应性的基本见解。
Regioselective and Chemoselective Reduction of Naphthols Using Hydrosilane in Methanol: Synthesis of the 5,6,7,8-Tetrahydronaphthol Core
作者:Yuan He、Jinghua Tang、Meiming Luo、Xiaoming Zeng
DOI:10.1021/acs.orglett.8b01273
日期:2018.7.20
A regioselective and chemoselective method for catalytic synthesis of biologically interesting 5,6,7,8-tetrahydronaphthols by reduction of naphthols was described. The side aromatic hydrocarbons in naphthols were site-selectively reduced, using hydrosilanes in methanol, allowing for retaining functional phenol scaffolds intact. It presents a rare example of using low-cost and air-stable hydrosilane
A general synthesis of resin-bound triaryl bismuthanes and resin-bound triaryl bismuth diacetates starting from commercially available chloromethyl polystyrene is reported. For the first time resin-bound bismuth has been utilized as part of a multidirectional linker system for solid-phase organic synthesis and as a resin-bound arylation reagent.
Dearomatizative azidation and peroxidation of [small beta]-naphthols have been explored using copper bromide as a catalyst. These reactions lead to highly valuable naphthalenone derivatives such as quaternary azide derivatives and quaternary...
Ru<sup>II</sup>-Catalyzed Vinylative Dearomatization of Naphthols via a C(sp<sup>2</sup>)–H Bond Activation Approach
作者:Jiang Nan、Zhijun Zuo、Lei Luo、Lu Bai、Huayu Zheng、Yini Yuan、Jingjing Liu、Xinjun Luan、Yaoyu Wang
DOI:10.1021/ja410060e
日期:2013.11.20
by sequential cleavage of the C(sp(2))-Hbond, migratory insertion of the alkyne, and dearomatization of the naphthyl ring. Various spirocyclic molecules bearing an all-carbon quaternary stereocenter could be obtained by this novel method with good yields and excellent regioselectivity, and the current process tolerates a variety of synthetically important functional groups.