【学术视频】全国二氧化碳资源化利用学术会议 | 日本庆应义塾大学Tohru Yamada教授

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图 | Tohru Yamada

题目：CO₂ Incorporation Reactions and CO₂ Mediated Reactions

报告人：Tohru Yamada

单位：Keio University, Japan

时间：2019-11-10

地点：南开大学

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报告摘要

A silver/base catalyst system was developed to effectively activate alkyne derivatives to capture CO₂. We reported that the combined use of a catalytic amount of silver acetate and DBU efficiently catalyzed the incorporation of CO₂ under mild reaction conditions for a wide range of propargyl alcohols to afford the corresponding cyclic carbonates in high-to-excellent yields. This procedure can be applied to various alkyne containing substrates to afford the corresponding heterocycles. In this reaction, the corresponding α, β-unsaturated carbonyl compounds generated via a decarboxylative Meyer-Schuster type reaction were realized in some polar solvents, such as form amides.

Recently, we reported the decarboxylative Nazarov type reaction to afford the highly substituted 2-cyclopentenones from the corresponding cyclic carbonate, prepared with the silver-catalyzed CO₂ incorporation into propargyl alcohol derivatives. When the carbonate was treated with a catalytic amount of BF₃•OEt₂ in 1, 2-dichloroethane at room temperature, the Nazarov cyclization proceeded to afford trans-2-cyclopentenones with high stereoselectivity and in high yield. 8 This procedure can be applied to the chirality transfer system to afford the corresponding 2-cyclopentenones in optically pure form.

个人简介

Prof. Tohru Yamada's research include new synthetic reactions catalyzed by metal complexes, e.g. catalytic enantioselective reduction, carbon dioxide fixation for organic synthesis, and microwave application to organic synthesis.

会议简介

由中国化学会主办，南开大学、中国化学会绿色化学专业委员会共同承办的两年一届的“中国化学会第一届全国二氧化碳资源化利用学术会议”于2019年11月8～10日在天津市南开大学举行。大会以二氧化碳化学领域的基础、应用和前沿问题为主题，主要围绕以下六个方面进行研讨：二氧化碳化学原理与应用（催化活化与催化剂设计）、二氧化碳定向转化的新反应/新途径/新方法、光化学催化反应、电催化方法、CO₂制备化学品/能源产品/聚合物、CO₂捕集与分离。