Details

Autor(en) / Beteiligte

• Wang, Tao
• Huang, Bo
• Wang, You‐Qing

Titel

Enantioselective Synthesis of Spiro Chroman‐Isoindolinones via Formal (4+2) Cycloaddition of In Situ‐Generated ortho‐Quinone Methides with 3‐Methylene Isoindolinones

Ist Teil von

• Advanced synthesis & catalysis, 2022-08, Vol.364 (15), p.2596-2605

Ort / Verlag

Heidelberg: Wiley Subscription Services, Inc

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Using chiral phosphoric acids as organocatalysts, a formal asymmetric (4+2) cycloaddition of 3‐methylene isoindolinone and in situ‐generated ortho‐quinone methide substrates is disclosed. This reaction exhibited a broad substrate scope with various substituted cyclic enamides and ortho‐hydroxybenzyl alcohol derivatives to construct a series of spiro chroman‐isoindolinones containing spiro‐N,O‐heterocycles with 56 to 93% ee. This strategy demonstrates significant potential towards establishing a chiral spiro‐N,O‐aminal systems bearing two chiral carbon centers, including a tetrasubstituted carbon stereocenter.