ReactionSeek:在有机合成中采用LLM的文献数据挖掘和知识发现
Jiawei Li1,2, Minzhou Li1,2, Qi Yang3,4
1Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing, China.
Nature communications
|March 2, 2026
概括
ReactionSeek使用大语言模型 (LLM) 和化学信息学自动化从科学文献中挖掘数据. 这个框架通过解锁非结构化数据,加速化学发现中的人工智能 (AI).
科学领域:
- 计算化学是一种计算化学.
- 化学信息学 化学信息学
- 科学领域的人工智能
背景情况:
- 科学文献中含有大量的化学数据,但它在很大程度上是无结构的,AI无法访问.
- 手动数据提取是耗时的,有限的,需要定制软件,阻碍了人工智能驱动的化学发现.
- 现有的方法无法有效地利用人工智能从各种来源提取复杂的化学信息.
研究的目的:
- 从有机合成文献中开发一个用于多模式数据挖掘的自动化框架.
- 为了克服人工智能驱动的化学发现中的数据策划瓶.
- 为人工智能应用实现化学信息的高效提取和标准化.
主要方法:
- 开发了ReactionSeek,这是一个结合大型语言模型 (LLM) 和化学信息学工具的框架.
- 利用复杂的提示引擎工程,使用最小的定制代码来提取数据.
- 验证了有机合成集合的框架,提取文本,图形和语义数据.
主要成果:
- 从有机合成系列中获得了超过95%的精度和回忆关键反应参数.
- 创建了一个大型,AI-ready数据集用于化学发现.
- 创建了一个交互式合成聊天机器人 (SynChat),用于对化学数据进行自然语言查询.
- 通过自主分析揭示了催化几十年的趋势.
结论:
- ReactionSeek提供了一种用于自动化从科学文献中整理数据的通用解决方案.
- 该框架显著推进了人工智能驱动的档案挖掘和化学科学的知识发现.
- 能够有效和可扩展地将人工智能应用于化学发现挑战.
相关概念视频
02:14SN2 Reaction: Kinetics
Kinetic Studies and Significance
In a chemical reaction, a relationship exists between the concentration of reactants and the rate at which the reaction proceeds. The study to measure this relationship is known as the kinetics of a chemical reaction. Kinetic studies are used to deduce the rate law of a chemical reaction, which provides information about the species involved during the transition state of the rate-determining step. Thus, kinetic studies help to derive the mechanism of a reaction.
In a chemical reaction, a relationship exists between the concentration of reactants and the rate at which the reaction proceeds. The study to measure this relationship is known as the kinetics of a chemical reaction. Kinetic studies are used to deduce the rate law of a chemical reaction, which provides information about the species involved during the transition state of the rate-determining step. Thus, kinetic studies help to derive the mechanism of a reaction.
02:45E2 Reaction: Kinetics and Mechanism
SN2 substitutions and E2 eliminations of alkyl halides proceed via a concerted pathway. While the nucleophile attacks the alpha carbon in SN2 reactions, it functions as a strong base and abstracts a beta hydrogen in the E2 mechanism. The rate-limiting transition state in E2 elimination reactions is characterized by partially broken carbon–hydrogen and carbon–halogen bonds and a partially formed pi bond between the alpha and beta carbons. The beta hydrogen and halide are eliminated...
02:43E2 Reaction: Stereochemistry and Regiochemistry
Elimination reactions of alkyl halides can yield one or more alkenes depending on the specific regiochemical and stereochemical considerations. While the regiochemistry of the reaction governs the location of the double bond in the product, the stereochemical requirements often influence the geometry.
When a substrate with two different β hydrogens undergoes an E2 elimination, the presence of a strong base can yield two regioisomeric alkenes. The more-substituted alkene is the major product and...
When a substrate with two different β hydrogens undergoes an E2 elimination, the presence of a strong base can yield two regioisomeric alkenes. The more-substituted alkene is the major product and...
02:46E1 Reaction: Kinetics and Mechanism
Here, in contrast to the E2 reaction mechanism, we delve into the aspects of the E1 reaction mechanism, which has two steps: rate-limiting loss of the leaving group and abstraction of the beta hydrogen by a weak base. Typically, the experimental proof for the E1 mechanism is via kinetic studies or isotope studies. While the former demonstrates the first-order kinetics—the dependence of the reaction solely on substrate concentration—the latter proves the abstraction of hydrogen only in the...
02:43E1 Reaction: Stereochemistry and Regiochemistry
One of the critical aspects of the E1 reaction mechanism, as also observed in E2, is the regiochemistry, with multiple regioisomers obtained as products. In the example discussed, the presence of water as a weak base favors elimination over substitution to generate two alkenes. Given that alkenes’ stability increases with the number of alkyl groups across the double bond, typically, E1 reactions lead to the Zaitsev product, for this is more substituted and stable than the Hofmann product.
01:10Radical Chain-Growth Polymerization: Overview
Chain-growth or addition polymerization is successive addition reactions of monomers with a polymer chain. In radical chain-growth polymerization, the reaction proceeds via a free-radical intermediate. The free radical is formed from radical initiators, which spontaneously generate free radicals by homolytic fission. Organic peroxides (such as dibenzoyl peroxide, as shown in Figure 1) or azo compounds are popular radical initiators. A low concentration ratio of radical initiator to monomer is...