Method for preparing tetronic acid by cyclisation and enolization of propargyl alcohol and carbon dioxide

Abstract

The invention belongs to the field of biochemistry, and mainly relates to a method for preparing tetronic acid by cyclisation and enolization of propargyl alcohol and carbon dioxide. The invention provides the method for preparing tetronic acid by cyclisation and enolization of propargyl alcohol and carbon dioxide. According to the invention, alkali, a solvent, and normal pressure are simply usedfor a reaction of propargyl alcohol and carbon dioxide, and tetronic acid is obtained. The method can greatly increase the yield, realizes gram-level scale, and has possibility for realizing industrialization. The provided new method system and a new strategy have development prospect, and propargyl alcohol and carbon dioxide firstly realize synthesis of tetronic acid.

Description

technical field [0001] The invention belongs to the field of chemistry, and in particular relates to a method for preparing tetronic acid through cycloenolization of propargyl alcohol and carbon dioxide. Background technique [0002] The greenhouse effect caused by carbon dioxide has become a global problem. However, in the eyes of chemists, carbon dioxide is a source of C1 with huge reserves. If people can use carbon dioxide as raw material to produce various high value-added chemicals, it will not only effectively reduce the greenhouse effect caused by carbon dioxide, but also reduce the impact on Reliance on traditional fossil fuels. However, compared with the more active carbon monoxide, carbon dioxide molecules are very stable, and the activation conditions are usually harsh. How to activate carbon dioxide under mild conditions has always been a huge challenge for the resource utilization of carbon dioxide. [0003] Among the various strategies for resource utilizatio...

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Problems solved by technology

Although various catalysts for this reaction have developed rapidly in recent years, and there have been many examples of organic catalysts replacing metal catalysts, there is still no breakthrough in the field of reaction between aryl propargyl alcohol and carbon dioxide, which can only be carried out under pressure. And there are still catalyst stability and reaction selectivity problems (carbene instability and reaction selectivity need to be improved: Yoshihito Kayaki, Masafumi Yamamoto, and TakaoIkariya, Angew.Chem., Int.Ed.2009,48,4194.Yan -Bo Wang, Yi-Ming Wang, Wen-Zhen Zhang, and Xiao-Bing Lu, J.Am.Chem.Soc.2013, 135, 11996; Yan-Bo Wang, Dong-ShengSun, Hui Zhou, Wen-Zhen Zhang and Xiao-Bing Lu, Green Chem., 2014, 16, 2266; Alkyl azaene-carbon dioxide adduct catalyst: Hui Zhou, Guo-Xu Wang, and Xiao-Bing Lu, Asian Journal of Organic Chemistry, 2017, 6, 1264; Silver carbene complexes supported on styrene (0 yield with aryl propargyl alcohol as substrate): Xiaodong Tang, Chaorong Qi, Haitao He, Huanfeng Jiang, Yanwei Ren, and Gaoqing Yuan, Adv .Synth.Catal.2013,355,2019; Ionic liquids (high pressure and ionic liquids are easy to absorb water and difficult to store): Jikuan Qiu, Yuling Zhao, Zhiyong Li, Huiyong Wang, Maohong Fan, and Jianji Wang, ChemSusChem2016,9,1)

Although aryl propargyl alcohol can react under atmospheric pressure, available yield is only 35% product (K.Uemura, T.Kawaguchi, H.Takayama, A.Nakamura, Y.Inoue, Journal of Molecular Catalysis A:Chemical ,1999,139 1)

In 2017, the problem of pressurized reaction conditions and low reaction yield of aryl propargyl alcohol was effectively improved, and the yield of phenyl-substituted alkenyl cyclic carbonate product could reach 50%, but the ionic liquid conditions used in the reaction Not conducive to large-scale industrial production (Yunyan Wu, Yanfei Zhao, Ruipeng Li, Bo Yu, Yu Chen, Xinwei Liu, Cailing Wu, Xiaoying Luo, and Zhimin Liu, ACS Catal.2017, 7, 6251)

Although the system has made a breakthrough compared with the reaction conditions of previous work, it still needs the participation of silver (Ye Yuan, YuXie, Cheng Zeng, Dandan Song, Somboon, Chaemchuen, Cheng Chen, Francis Verpoort, Catal.Sci.Technol .,2017,7,2935)

[0006] In summary, the cyclization reaction of propargyl alcohol and carbon dioxide still has challenges such as strong catalyst dependence, harsh reaction conditions, and poor applicability of aryl substrates.

[0007] Because of its unique properties, tetronic acid is widely used in the fields of medicine, pesticides, polymer materials and dyes, so chemists have also developed many methods for synthesizing tetronic acid, but there are still cumbersome routes or active starting materials. , or harsh reaction conditions, such as: starting from corrosive aryl acetyl chloride, two-step synthesis of tetronic acid, and the second step needs to be carried out under reflux conditions (Jin-Hao Zhao, Zong-Cheng Wang, Ming-Hua Ji, Jing-Li Cheng, Guo-Nian Zhu and Chuan-Ming Yu, Pest Manag Sci 2012,68,1); Another example is the generation of 3-diazofuran-2,4-dione by C-H activation of aromatic hydrocarbons Cross-coupling to obtain tetronic acid requires the use of noble metal Rh; and if some reactions require and dangerous reagent butyllithium is the starting material (Liu Shaohua, Wang Zhenyu, Wang Jinjin, Wang Jinhua, Shi Hui, Guo Yayun, Fine and Specialty Chemicals, 2015 ,23,36)

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