En Route to a Practical Primary Alcohol Deoxygenation
作者:Xi-Jie Dai、Chao-Jun Li
DOI:10.1021/jacs.6b02344
日期:2016.4.27
efficient mainly with activated alcohols, which dictates harsh reaction conditions and thus limits itssyntheticutility. Later, a significant advancement has been made on aliphaticprimaryalcohol deoxygenation by employing a ruthenium complex, with good functional group tolerance and exclusive selectivity under practical reaction conditions. Itssyntheticutility is further illustrated by excellent
醇脱氧领域的一个长期科学挑战是在存在其他官能团(如广泛存在于生物分子中的游离羟基和胺)的情况下,具有高选择性和高效率的直接催化 sp(3) CO 去官能化。以前,选择性问题只能通过使用化学计量试剂的经典多步脱氧策略来解决。在此,我们提出了一种基于脱氢/沃尔夫-基什纳 (WK) 还原的催化后过渡金属催化氧化还原设计,以同时解决步骤经济性和选择性方面的挑战。我们假设的早期发展侧重于主要使用活化醇有效的铱催化过程,这决定了苛刻的反应条件,从而限制了其合成效用。之后,采用钌配合物在脂肪族伯醇脱氧方面取得了重大进展,在实际反应条件下具有良好的官能团耐受性和专属选择性。在简单和复杂的分子设置中,其卓越的效率以及完全的化学和区域选择性进一步说明了其合成效用。实验支持还包括机械讨论。总体而言,我们目前的方法成功地解决了相关领域中的上述挑战,为脂肪族伯醇的直接 sp(3) CO 去官能化提供了一种实用的基于
LIGHT DRIVEN METAL PINCER PHOTOCATALYSTS FOR CARBON DIOXIDE REDUCTION TO CARBON MONOXIDE
申请人:The Board of Trustees of The University of Alabama
公开号:US20190083966A1
公开(公告)日:2019-03-21
Disclosed are N-heterocyclic carbene (NHC) and 4-pyridinol-derived pincer ligands and metal complexes containing these ligands. These compounds can be used to photocatalyticaly reduce CO
2
to CO.
[EN] PREPARATION OF AMINO ACIDS AND AMINO ACID DERIVATIVES<br/>[FR] PRÉPARATION D'ACIDES AMINÉS ET DE DÉRIVÉS D'ACIDES AMINÉS
申请人:MATERIA INC
公开号:WO2018057290A1
公开(公告)日:2018-03-29
The invention relates to a method for synthesizing amino acids or amino acid derivatives involving cross metathesis of functionalized olefins and a tandem amination-reduction process. Amino acids and amino acid derivatives present many interesting physical and chemical properties finding many uses in the automotive, fuel, electronic, and textile industries.
Re
<sup>I</sup>
Tricarbonyl Complexes as Coordinate Covalent Inhibitors for the SARS‐CoV‐2 Main Cysteine Protease
作者:Johannes Karges、Mark Kalaj、Milan Gembicky、Seth M. Cohen
DOI:10.1002/anie.202016768
日期:2021.5.3
syndrome—coronavirus 2 (SARS‐CoV‐2) has impacted the quality of life and cost hundreds‐of‐thousands of lives worldwide. Based on its global spread and mortality, there is an urgent need for novel treatments which can combat this disease. To date, the 3‐chymotrypsin‐like protease (3CLpro), which is also known as the mainprotease, is considered among the most important pharmacological targets. The vast majority
自爆发以来,严重急性呼吸系统综合症冠状病毒 2 (SARS-CoV-2) 影响了生活质量,并导致全世界数十万人丧生。鉴于其在全球的传播和死亡率,迫切需要能够对抗这种疾病的新疗法。迄今为止,3-胰凝乳蛋白酶样蛋白酶(3CL pro )也被称为主要蛋白酶,被认为是最重要的药理学靶点之一。绝大多数研究的 3CL前体抑制剂都是有机非共价结合剂。在此,建议使用无机配位共价结合剂来减弱蛋白酶的活性。 Re 三羰基复合物被鉴定为 3CL pro的协调共价酶抑制。初步研究表明 3CL pro对几种人类蛋白酶具有选择性抑制作用。这项研究首次展示了金属配合物作为 3CL半胱氨酸蛋白酶抑制剂的例子。
Dehydrogenative Oxidation of Alcohols in Aqueous Media Using Water-Soluble and Reusable Cp*Ir Catalysts Bearing a Functional Bipyridine Ligand
A new catalytic system for the dehydrogenative oxidation of alcohols using a water-soluble Cp*Ir complexbearing a bipyridine-based functionalligand as catalyst has been developed. With this catalytic system, a variety of primary and secondary alcohols have been efficiently converted to aldehydes and ketones, respectively, in aqueousmedia without using any oxidant. Reuse of the catalyst by a very