Selective functionalization of hindered meta-C–H bond of o-alkylaryl ketones promoted by automation and deep learning
|Corresponding Author||Yang，Yuedong; Liao，Kuangbiao|
Selective functionalization of the sterically hindered aromatic meta-C–H bond is unprecedented and remains to be a major challenge. Promoted by automation-based high-throughput experimentation (HTE) and deep learning (DL), a novel strategy to functionalize the hindered meta-C–H bond is disclosed. With carbon dioxide as a traceless director, a one-pot three-step protocol was developed to achieve selective arylation of o-alkylaryl ketones at the hindered meta position. This novel strategy involved photo-induced C–H carboxylation, carboxyl group-directed Pd-catalyzed C–H functionalization, and microwave-assisted decarboxylation. With HTE and DL, a broad scope of substrates was explored (1,032 reactions) and a DL-based model (CMPRY) for reaction yield prediction was established. Two independent tests with unseen o-alkylaryl ketones and/or potassium aryltrifluoroborates were used to evaluate the model. The model gave excellent performances in predicting unseen reactions; mean absolute errors in yield were only 6.6% and 8.4%, suggesting its potential in synthetic application.
National Natural Science Foundation of China;
|WOS Accession No|
Cited Times [WOS]:5
|Document Type||Journal Article|
|Department||Department of Chemistry|
3.School of Computer Science and Engineering,Sun Yat-sen University,Guangzhou,510006,China
4.Department of Chemistry,Southern University of Science and Technology,Shenzhen,518055,China
Qiu，Jia,Xie，Jiancong,Su，Shimin,等. Selective functionalization of hindered meta-C–H bond of o-alkylaryl ketones promoted by automation and deep learning[J]. Chem,2022,8(12):3275-3287.
Qiu，Jia.,Xie，Jiancong.,Su，Shimin.,Gao，Yadong.,Meng，Han.,...&Liao，Kuangbiao.(2022).Selective functionalization of hindered meta-C–H bond of o-alkylaryl ketones promoted by automation and deep learning.Chem,8(12),3275-3287.
Qiu，Jia,et al."Selective functionalization of hindered meta-C–H bond of o-alkylaryl ketones promoted by automation and deep learning".Chem 8.12(2022):3275-3287.
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