Selective <i>N</i>
-Monoalkylation of 6-Aminouracils with Alcohols: An Environmentally Benign Protocol for the Synthesis of 6-Alkylaminouracils
作者:Anggi Eka Putra、Yohei Oe、Tetsuo Ohta
DOI:10.1002/ejoc.201701445
日期:2018.1.23
A highly selective N‐monoalkylation of 6‐aminouracils with alcohols was achieved through the borrowing hydrogen approach using iridium catalysis. This reaction provides an efficient and green approach to the synthesis of 6‐alkylaminouracils, which are useful intermediates in organic synthesis.
KI-VO(acac)<sub>2</sub>-H<sub>2</sub>O<sub>2</sub>-AcOH, A New Iodinating System for Selective Iodination at C-5 Position of Activated Pyrimidinediones: A Combined Experimental and Density Functional Study
作者:Lakhinath Saikia、Dhrubajyoti Talukdar、Ramesh C. Deka、Ashim J. Thakur
DOI:10.1002/jhet.1575
日期:2013.7
KI‐VO(acac)2‐H2O2 in aqueous ethanolic medium with acetic acid as additive has been found to iodinatepyrimidinediones and aromatic amines. The methodology is mild, efficient, and environmentally benign. Densityfunctional theory‐based reactivity parameters support the experimentally observed reactivity of pyrimidinedione derivatives.
已发现在含水乙醇介质中以乙酸为添加剂的KI-VO(acac)2 -H 2 O 2可碘化嘧啶二酮和芳族胺。该方法是温和的,有效的且对环境无害的。基于密度泛函理论的反应性参数支持嘧啶二酮衍生物的实验观察到的反应性。
Iridium supported on porous polypyridine-oxadiazole as high-activity and recyclable catalyst for the borrowing hydrogen reaction
作者:Jiahao Li、Anruo Mao、Wei Yao、Haiyan Zhu、Dawei Wang
DOI:10.1039/d2gc00190j
日期:——
HRTEM, SEM, and XPS, and revealed high catalytic activity for the reaction of dimethyl-6-aminouracil with benzylalcohols, 1,3-dimethylbarbituric acid with benzylalcohols and 2-aminobenzylamine and benzylalcohols through dehydrogenation and the borrowinghydrogenstrategy with alcohol or water as the solvent. In addition, this PPO-Ir catalyst could be recycled and reused without a manifest loss of