PMID- 32270678 OWN - NLM STAT- MEDLINE DCOM- 20220530 LR - 20220530 IS - 1520-6904 (Electronic) IS - 0022-3263 (Linking) VI - 85 IP - 9 DP - 2020 May 1 TI - Construction of 1,3-Oxazolidines through a Three-Component [3+2] Cycloaddition of Tetrahydroisoquinolines, Aldehydes, and Ethyl Ketomalonate. PG - 6216-6224 LID - 10.1021/acs.joc.0c00616 [doi] AB - A chemoselective and diastereoselective synthesis of fused oxazolidines was achieved by a three-component cascade reaction of tetrahydroisoquinolines (THIQs), alpha,beta-unsaturated aldehydes, and diethyl 2-oxomalonate. Probably due to the reactivity difference between the aldehyde and the ketone, the reaction proceeded through the condensation of THIQs with alpha,beta-unsaturated aldehydes and 1,3-dipolar cycloaddition of the generated azomethine ylide intermediate with 2-oxomalonate. The key features are easily available starting materials, mild reaction conditions, broad substrate scope, and high chemo- and diastereoselectivity. FAU - Wu, Xiang AU - Wu X AUID- ORCID: 0000-0001-5428-9063 AD - Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China. FAU - Zhu, Zheng-Hao AU - Zhu ZH AD - Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China. FAU - He, Hao AU - He H AD - Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China. FAU - Ren, Lei AU - Ren L AD - College of Materials and Chemical Engineering, Bengbu University, Bengbu 233030, China. FAU - Zhu, Cheng-Feng AU - Zhu CF AUID- ORCID: 0000-0002-9676-6750 AD - Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China. FAU - Li, You-Gui AU - Li YG AD - Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200415 PL - United States TA - J Org Chem JT - The Journal of organic chemistry JID - 2985193R RN - 0 (Aldehydes) RN - 0 (Amines) RN - 0 (Malonates) RN - 0 (Oxazoles) RN - 0 (Tetrahydroisoquinolines) RN - 13F52UF6MR (oxazolidine) RN - 62R514HE48 (mesoxalic acid) SB - IM MH - *Aldehydes MH - Amines MH - Cyclization MH - Cycloaddition Reaction MH - Malonates MH - Oxazoles MH - Stereoisomerism MH - *Tetrahydroisoquinolines EDAT- 2020/04/10 06:00 MHDA- 2022/05/31 06:00 CRDT- 2020/04/10 06:00 PHST- 2020/04/10 06:00 [pubmed] PHST- 2022/05/31 06:00 [medline] PHST- 2020/04/10 06:00 [entrez] AID - 10.1021/acs.joc.0c00616 [doi] PST - ppublish SO - J Org Chem. 2020 May 1;85(9):6216-6224. doi: 10.1021/acs.joc.0c00616. Epub 2020 Apr 15.