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Enantiospecific 1,3-hydrogen transfer of alkenes and alkynes 烯和炔的对映体 1,3-氢转移
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-09-12 DOI: 10.1016/j.trechm.2024.08.004
Qi Liu, Wan-Yi Xu, Cen-Cen You, Rong-Gui Zhou, Ying He

1,3-Hydrogen (H) transfer of alkenes and alkynes has emerged as an atom-economic transformation in organic synthesis. The reaction usually takes place under mild conditions, avoids the need for external additives, and accommodates a broad range of functional groups. Although 1,3-H transfer was first realized a long time ago, only in recent times have there been more comprehensive and systematic studies on their enantiospecific transformations. This review summarizes the recent advances in enantiospecific 1,3-H transfer of alkenes and alkynes for the generation of centrally and axially chiral molecules. Examples where the enantiospecific 1,3-H transfer occurs inside a tandem reaction system are discussed. This review could inspire more studies on the development of enantiospecific 1,3-H transfer for asymmetric chemistry.

烯和炔的 1,3-氢（H）转移已成为有机合成中一种原子经济的转化方法。该反应通常在温和的条件下进行，无需外加添加剂，可容纳多种官能团。虽然 1,3-H-转移在很早以前就已实现，但直到最近才对其对映体特异性转化进行了更全面、更系统的研究。本综述总结了烯和炔对映体 1,3-H 转移生成中心和轴向手性分子的最新进展。文中讨论了在串联反应体系中发生对映体特异性 1,3-H 转移的实例。这篇综述可能会激发更多关于开发用于不对称化学的对映体特异性 1,3-H 转移的研究。
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引用次数: 0
Subscription and Copyright Information 订阅和版权信息
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-09-11 DOI: 10.1016/s2589-5974(24)00168-0
No Abstract
无摘要
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引用次数: 0
Advisory Board and Contents 咨询委员会和内容
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-09-11 DOI: 10.1016/s2589-5974(24)00165-5
No Abstract
无摘要
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引用次数: 0
Cholesterol-mediated functionalization of liposomes for artificial cell design 胆固醇介导的脂质体功能化用于人工细胞设计
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-09-10 DOI: 10.1016/j.trechm.2024.08.003
Xin Qiao, Xiaoliang Wang, Xin Huang

To achieve functionalized liposomes and their expanding applications in assembling artificial cells and solve problems of poor stability and single structure of liposomes, recent progress in state-of-the-art liposomes has employed cholesterol as an ‘anchor’ to enrich phospholipid membranes with modifications. Cholesterol is widely used because of its capacity for robust hydrophobic interactions with phospholipids. Introducing cholesterol into liposomes renders them more similar to cells. This review summarizes the various designs and applications of cholesterol-based anchors in liposomes, including surface macromolecular modification of liposomes to achieve improved properties and functionalization, cholesterol-mediated liposome membrane fusion, and cholesterol-mediated hierarchical construction of liposomes as artificial cell models. These studies guide artificial cells to reveal the behavior of life and wider applications.

为了实现功能化脂质体，扩大其在组装人工细胞方面的应用，并解决脂质体稳定性差和结构单一的问题，最近在最先进的脂质体方面取得的进展是采用胆固醇作为 "锚"，对磷脂膜进行富集和修饰。胆固醇之所以被广泛使用，是因为它能与磷脂产生强大的疏水相互作用。将胆固醇引入脂质体可使其更接近细胞。本综述总结了脂质体中以胆固醇为基础的锚的各种设计和应用，包括脂质体表面大分子修饰以获得更好的特性和功能化、胆固醇介导的脂质体膜融合以及胆固醇介导的脂质体作为人工细胞模型的分层构建。这些研究引导人工细胞揭示生命行为，并实现更广泛的应用。
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引用次数: 0
ChemCarnival: inspiring future STEM pioneers 化学嘉年华：激励未来的科学、技术和工程先锋
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-09-07 DOI: 10.1016/j.trechm.2024.08.001
Ahmad H. Akhdar, Farah B. Cheaib, Farah N. Al-Awar, Nabil M. Halabi, Areej Merhi, Bilal R. Kaafarani

Contemporary pedagogical research emphasizes the necessity of outreach events to promote and foster science, technology, engineering, and mathematics (STEM) education. This is vital, both in the Middle East and North Africa (MENA) region and worldwide. Here we describe the creation of ChemCarnival, an annual outreach event at the American University of Beirut (AUB) to encourage STEM enthusiasm in the Lebanese community.

当代教学研究强调，必须开展外联活动，促进和推动科学、技术、工程和数学 （STEM）教育。这在中东和北非地区以及全世界都至关重要。在此，我们介绍贝鲁特美国大学（AUB）为鼓励黎巴嫩社区对 STEM 的热情而举办的年度外联活动 ChemCarnival。
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引用次数: 0
Pendulum-like oscillatory adaptive catalysis 钟摆式振荡自适应催化作用
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-09-04 DOI: 10.1016/j.trechm.2024.08.002
Wuchao Zhao, Jianghua He, Yuetao Zhang, Eugene Y.-X. Chen
No Abstract
无摘要
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引用次数: 0
Single-bacterium modification strategies for photobiocatalytic CO2 reduction 光生物催化二氧化碳还原的单菌改造策略
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-08-15 DOI: 10.1016/j.trechm.2024.07.003
Yujing Jiang, Hanyu Li, Wenlei Zhu

Photosynthetic biohybrid systems (PBS) could efficiently harness solar energy through photosensitizers and facilitate CO2 fixation via biocatalysts. Enhancing electron generation, transfer, and utilization at the photosensitizer–biocatalyst interface is crucial for the improvement in PBS performance. This forum article evaluates PBS, incorporating diverse photosensitizers and biocatalysts, introducing innovative strategies for enhancing PBS performance.

光合生物杂交系统（PBS）可通过光敏剂有效利用太阳能，并通过生物催化剂促进二氧化碳固定。提高光敏剂-生物催化剂界面的电子生成、转移和利用率对于改善光合生物杂交系统的性能至关重要。本论坛文章评估了结合多种光敏剂和生物催化剂的 PBS，介绍了提高 PBS 性能的创新策略。
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引用次数: 0
Subscription and Copyright Information 订阅和版权信息
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-08-14 DOI: 10.1016/s2589-5974(24)00145-x
No Abstract
无摘要
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引用次数: 0
Advisory Board and Contents 咨询委员会和内容
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-08-14 DOI: 10.1016/s2589-5974(24)00142-4
No Abstract
无摘要
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引用次数: 0
An asymmetric propargylation of cyclopropanols 环丙醇的不对称丙炔化反应
IF 15.7 2区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Trends in Chemistry
Pub Date : 2024-08-10 DOI: 10.1016/j.trechm.2024.07.001
No Abstract
无摘要
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引用次数: 0
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