Molecular Oxygen-Mediated Minisci-Type Radical Alkylation of Heteroarenes with Boronic Acids
作者:Lizhi Zhang、Zhong-Quan Liu
DOI:10.1021/acs.orglett.7b03297
日期:2017.12.15
The carbon–carbonbondformation via autoxidation of organoboronic acid using 1 atm of O2 is achieved in a simple, clean, and green fashion. The approach allows a technically facile and environmentally benign access to structurally diverse heteroaromatics with medicinally privileged scaffolds. The strategy also displays its practicality and sustainability in the resynthesis of marketed drugs Crestor
Minisci‐Type Alkylation of
<i>N</i>
‐Heteroarenes by
<i>N</i>
‐(Acyloxy)phthalimide Esters Mediated by a Hantzsch Ester And Blue LED Light
作者:Jiacheng Li、Suan Siang Tan、Sara Helen Kyne、Philip Wai Hong Chan
DOI:10.1002/adsc.202101195
日期:2022.2.15
A synthetic method that enables the Hantzsch ester-mediated Minisci-type C2-alkylation of quinolines, isoquinolines and pyridines by N-(acyloxy)phthalimide esters (NHPI) under blue LED (light emitting diode) light (456 nm) is described. Achieved under mild reaction conditions at room temperature, the metal-free synthetic protocol was shown to be applicable to primary, secondary and tertiary NHPIs to
The Alkylation and Reduction of Heteroarenes with Alcohols Using Photoredox Catalyzed Hydrogen Atom Transfer via Chlorine Atom Generation
作者:Montserrat Zidan、Avery O. Morris、Terry McCallum、Louis Barriault
DOI:10.1002/ejoc.201900786
日期:2020.3.15
The alkylation of N‐heteroarenes using primary alcohols and ethers as radical precursors. The corresponding alkyl radical is formed via hydrogen atom transfer (HAT) process with a photoredox catalyzed chlorineatomgeneration as HAT agent. Furthermore, we explore the reduction of the heteroarenes when secondary alcohols are employed, giving moderate to high yields.
Chroman compounds and derivatives of Formula I are useful inhibitors of TRPM8. Such compounds are useful in treating a number of TRPM8 mediated disorders and conditions and may be used to prepare medicaments and pharmaceutical compositions useful for treating such disorders and conditions. Examples of such disorders include, but are not limited to, migraines and neuropathic pain. Compounds of Formula I have the following structure:
where the definitions of the variables are provided herein.
Formula I的Chroman化合物和衍生物是TRPM8的有用抑制剂。这些化合物在治疗多种由TRPM8介导的疾病和症状方面具有用途,并可用于制备治疗这些疾病和症状的药物和药物组合物。这些疾病的例子包括,但不限于,偏头痛和神经病性疼痛。Formula I的化合物具有以下结构:变量的定义在此提供。