[EN] METHODS AND INTERMEDIATES FOR PREPARING MACROLACTAMS<br/>[FR] PROCÉDÉS ET INTERMÉDIAIRES POUR PRÉPARER DES MACROLACTAMES
申请人:MERCK SHARP & DOHME
公开号:WO2015057611A1
公开(公告)日:2015-04-23
The present invention includes compounds useful as intermediates in the preparation of macrolactams, methods for preparing the intermediates, and methods for preparing macrolactams. One use of the methods and intermediates described herein is in the production of macrolactam compounds able to inhibit HCV NS3 protease activity. HCV NS3 inhibitory compounds have therapeutic and research applications.
[EN] METHODS AND INTERMEDIATES FOR THE PREPARATION OF MACROLACTAMS<br/>[FR] PROCÉDÉS ET INTERMÉDIAIRES POUR LA PRÉPARATION DE MACROLACTAMES
申请人:MERCK SHARP & DOHME
公开号:WO2015095430A1
公开(公告)日:2015-06-25
The present invention relates to synthetic processes useful in the preparation of macrolactams that inhibit hepatitis C virus (HCV), specifically macrolactam compounds that inhibit the HCV NS3 protease activity and have application in the treatment of conditions caused by HCV. The present invention also encompasses intermediates useful in the disclosed synthetic processes and the methods of their preparation.
Synthesis of Surfactants Based on Pentaerythritol. I. Cationic and Zwitterionic Gemini Surfactants
作者:Nusrat Jahan、Nawal Paul、Christian J. Petropolis、D. Gerrard Marangoni、T. Bruce Grindley
DOI:10.1021/jo9018107
日期:2009.10.16
benzylidene acetals gave diols which were converted into three different series of trimethylammonium derivatives. The diiodides derived from the diols could be displaced by dimethylamine, even though they are adjacent to a quaternary carbon atom. Alkylation with methyl iodide gave the first series. The iodides were easily displaced by cyanide ion and the resulting dinitriles were hydrolyzed, converted to N,N-dimethylamides
Catalytic Synthesis of 8‐Membered Ring Compounds via Cobalt(III)‐Carbene Radicals
作者:Minghui Zhou、Marianne Lankelma、Jarl Ivar Vlugt、Bas Bruin
DOI:10.1002/anie.202002674
日期:2020.6.26
The metalloradical activation of o ‐aryl aldehydes with tosylhydrazide and a cobalt(II) porphyrincatalyst produces cobalt(III)‐carbene radical intermediates, providing a new and powerful strategy for the synthesis of medium‐sized ring structures. Herein we make use of the intrinsic radical‐type reactivity of cobalt(III)‐carbene radical intermediates in the [CoII(TPP)]‐catalyzed (TPP=tetraphenylporphyrin)
用甲苯磺酰肼和钴(II)卟啉催化剂对邻芳基醛进行金属自由基活化,产生钴(III)卡宾自由基中间体,为合成中等大小的环结构提供了一种新的强大策略。在此,我们利用钴(III)-卡宾自由基中间体的固有自由基型反应活性,在[Co II (TPP)]催化(TPP=四苯基卟啉)合成两种类型的8元环化合物;新型二苯并环辛烯和前所未有的单苯并环辛二烯。该方法已成功应用,以良好的收率和优异的取代基耐受性提供了多种八元环化合物。密度泛函理论(DFT)计算和实验结果表明,反应通过氢原子从双烯丙基/苯甲基烯丙基CH键转移到卡宾自由基进行,然后通过两个不同的过程进行闭环,形成两种不同类型的碳烯。 8元环产物。虽然二苯并环辛烯很可能是由邻醌二甲烷 ( o -QDM) 解离形成的,经过非催化 8π 环化,DFT 计算表明单苯并环辛二烯的闭环涉及钴配位层中的自由基反弹步骤。后一种机制意味着手性单苯并环辛二烯前所未有的对映
Phosphonates α-lithies agents de transfert fonctionnel. Preparation de phosphonates α-amides et d'amides α, β-insatures, α-substitues
strategy), or by condensation of an amide enolate with diethylchlorophosphate (second strategy). Acidic hydrolysis of () or () gives α-amidophosphonate () alkylated or not in the α -position. () and () react with aromatic or aliphatic aldehydes to produce α,β-unsatured secondary or tertiary amides ().