期刊
TETRAHEDRON
卷 116, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2022.132810
关键词
Dearomative annulation; Hexa fluoroisopropanol; Intramolecular annulation; Heterocycles; 4-Dihydroquinolizin-2-ones
资金
- National Natural Science Foundation of China [22171029, 21901024, 21871252, 21801024, 21801026]
- Sichuan Science and Technology Program [2021YFS0315]
- Talent Program of Chengdu University [2081919035, 2081921038]
A HFIP-promoted transition metal-free intramolecular dearomative annulation reaction has been developed for the synthesis of structurally diverse substituted 3,4-dihydroquinolizin-2-ones under mild conditions, affording moderate to good yields of the desired products.
HFIP-promoted transition metal-free intramolecular dearomative annulation reaction of 2-pyridylacetate derivatives has been successfully developed under mild conditions, affording structurally diverse substituted 3,4-dihydroquinolizin-2-ones decorated with a range of functional groups in moderate to good yields. The key to the success of this reaction is the existence of the substrates 2-pyridylacetate derivatives in complete enol forms as well as the utilization of HFIP as the solvent. (c) 2022 Elsevier Ltd. All rights reserved.
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