Phosphine‐Catalyzed Substitution of Allenoates with Oxindoles: An Approach to 3‐Allenic or 3‐Dienoic Oxindoles

ChemistrySelect, Год журнала: 2021, Номер 6(36), С. 9709 - 9713

Опубликована: Сен. 23, 2021

Abstract A new method for substitution of allenoate using oxindoles as nucleophilic reagents has been disclosed in this paper upon phosphine catalysis under mild conditions to afford 3‐allenic or 3‐dienoic moderate good yields depending on the substituent at aromatic ring oxindole. According previous works, plausible reaction mechanisms have proposed.

Язык: Английский

Isothiourea-catalysed enantioselective annulation of 2-aminobenzothiophenes with α,β-unsaturated anhydrides

Organic Chemistry Frontiers, Год журнала: 2022, Номер 9(20), С. 5551 - 5556

Опубликована: Янв. 1, 2022

An isothiourea-catalysed asymmetric Michael/lactamization cascade reaction of 2-aminobenzothiophenes and α,β-unsaturated anhydrides for the enantioselective synthesis benzothienopiperidones with high stereoselectivities was developed.

Язык: Английский