High diastereoselective [4 + 2] annulation of β,γ-unsaturated α-keto esters and p-quinone methides: Approach to polysubstituted 4-aryl chromans and tetrahydroquinolines
In: Tetrahedron Letters, Jg. 61 (2020-07-01), S. 152171-152171
Online
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Zugriff:
DBU-mediated [4 + 2] annulation of β,γ-unsaturated α-keto esters and p-quinone methides has been developed. Under mild conditions, the reaction afforded polysubstituted 4-aryl chromans and tetrahydroquinolines as single diastereoisomer in high yields (up to 91% yield) at room temperature.
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High diastereoselective [4 + 2] annulation of β,γ-unsaturated α-keto esters and p-quinone methides: Approach to polysubstituted 4-aryl chromans and tetrahydroquinolines
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Autor/in / Beteiligte Person: | Liu, Zhanxu ; Song, Ran ; Lv, Jian ; Si, Wen ; Xu, Fan |
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Zeitschrift: | Tetrahedron Letters, Jg. 61 (2020-07-01), S. 152171-152171 |
Veröffentlichung: | Elsevier BV, 2020 |
Medientyp: | unknown |
ISSN: | 0040-4039 (print) |
DOI: | 10.1016/j.tetlet.2020.152171 |
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