{"title":"双室规整反应器中不饱和乙烯基醚的选择性氢化反应","authors":"","doi":"10.1002/ajoc.202400147","DOIUrl":null,"url":null,"abstract":"<div><p>A pressure gauge was incorporated into a two‐chamber glass H‐tube to continuously monitor the pressure inside a reactor when working with gases. The <em>ex situ</em> generated H<sub>2</sub>, D<sub>2</sub>, acetylene and CO<sub>2</sub> were tested in pressure gauge reactors, and calibration curves were plotted. A series of unsaturated compounds with two or more double C=C bonds accessible for hydrogenation were synthesized for hydrogenation. The hydrogenation proceeded well due to constant pressure control, and the desired products were isolated in good yields. The same hydrogenation procedures were then carried out using steel autoclaves to verify the results and compare them. Surprisingly, almost the same results were obtained, confirming the effectiveness of self‐made glass reactors. The hydrogenation mechanism was further investigated using D‐labeled reagents. The kinetics of hydrogenation was studied both in manometric glass reactors and in steel autoclaves, which showed a similar nature of the main process in both reaction units. Thus, the created reactors can be effectively used in barometric transformations instead of steel autoclaves in appropriate cases.</p></div>","PeriodicalId":130,"journal":{"name":"Asian Journal of Organic Chemistry","volume":"13 7","pages":"Article e202400147"},"PeriodicalIF":2.8000,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Selective Hydrogenation of Unsaturated Vinyl Ethers in Two‐Chamber Gauge‐Reactor\",\"authors\":\"\",\"doi\":\"10.1002/ajoc.202400147\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A pressure gauge was incorporated into a two‐chamber glass H‐tube to continuously monitor the pressure inside a reactor when working with gases. The <em>ex situ</em> generated H<sub>2</sub>, D<sub>2</sub>, acetylene and CO<sub>2</sub> were tested in pressure gauge reactors, and calibration curves were plotted. A series of unsaturated compounds with two or more double C=C bonds accessible for hydrogenation were synthesized for hydrogenation. The hydrogenation proceeded well due to constant pressure control, and the desired products were isolated in good yields. The same hydrogenation procedures were then carried out using steel autoclaves to verify the results and compare them. Surprisingly, almost the same results were obtained, confirming the effectiveness of self‐made glass reactors. The hydrogenation mechanism was further investigated using D‐labeled reagents. The kinetics of hydrogenation was studied both in manometric glass reactors and in steel autoclaves, which showed a similar nature of the main process in both reaction units. Thus, the created reactors can be effectively used in barometric transformations instead of steel autoclaves in appropriate cases.</p></div>\",\"PeriodicalId\":130,\"journal\":{\"name\":\"Asian Journal of Organic Chemistry\",\"volume\":\"13 7\",\"pages\":\"Article e202400147\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2024-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Asian Journal of Organic Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/org/science/article/pii/S2193580724001351\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, ORGANIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Asian Journal of Organic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/org/science/article/pii/S2193580724001351","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ORGANIC","Score":null,"Total":0}
引用次数: 0
摘要
在双室玻璃 H 型管中安装了压力表,以便在使用气体时持续监测反应器内的压力。在压力表反应器中测试了原位生成的 H2、D2、乙炔和 CO2,并绘制了校准曲线。合成了一系列具有两个或两个以上可用于氢化的双 C=C 键的不饱和化合物用于氢化。由于采用了恒压控制,氢化过程进展顺利,并以良好的产率分离出了所需的产物。然后使用钢高压锅进行了相同的氢化过程,以验证和比较结果。令人惊讶的是,结果几乎相同,这证实了自制玻璃反应器的有效性。使用 D 标记试剂进一步研究了氢化机理。在人压玻璃反应器和钢高压釜中都对氢化动力学进行了研究,结果表明两个反应单元的主要过程性质相似。因此,在适当的情况下,所制造的反应器可以有效地用于气压转化,而不是钢制高压釜。
Selective Hydrogenation of Unsaturated Vinyl Ethers in Two‐Chamber Gauge‐Reactor
A pressure gauge was incorporated into a two‐chamber glass H‐tube to continuously monitor the pressure inside a reactor when working with gases. The ex situ generated H2, D2, acetylene and CO2 were tested in pressure gauge reactors, and calibration curves were plotted. A series of unsaturated compounds with two or more double C=C bonds accessible for hydrogenation were synthesized for hydrogenation. The hydrogenation proceeded well due to constant pressure control, and the desired products were isolated in good yields. The same hydrogenation procedures were then carried out using steel autoclaves to verify the results and compare them. Surprisingly, almost the same results were obtained, confirming the effectiveness of self‐made glass reactors. The hydrogenation mechanism was further investigated using D‐labeled reagents. The kinetics of hydrogenation was studied both in manometric glass reactors and in steel autoclaves, which showed a similar nature of the main process in both reaction units. Thus, the created reactors can be effectively used in barometric transformations instead of steel autoclaves in appropriate cases.
期刊介绍:
Organic chemistry is the fundamental science that stands at the heart of chemistry, biology, and materials science. Research in these areas is vigorous and truly international, with three major regions making almost equal contributions: America, Europe and Asia. Asia now has its own top international organic chemistry journal—the Asian Journal of Organic Chemistry (AsianJOC)
The AsianJOC is designed to be a top-ranked international research journal and publishes primary research as well as critical secondary information from authors across the world. The journal covers organic chemistry in its entirety. Authors and readers come from academia, the chemical industry, and government laboratories.