Silver-catalyzed cyclization of α-imino-oxy acids to fused tetralone derivatives

Organic & Biomolecular Chemistry, Год журнала: 2023, Номер 21(13), С. 2700 - 2704

Опубликована: Янв. 1, 2023

A silver-catalyzed cyclization of α-imino-oxy acids under mild conditions has been described. This reaction offers facile access to a diverse range fused tetralone derivatives with exquisite stereoselectivity in moderate good yields.

Язык: Английский

---

Synthesis of multisubstituted carbazol-4-amines from tetrahydrocarbazol-4-one oximes

Organic Chemistry Frontiers, Год журнала: 2024, Номер 11(10), С. 2821 - 2828

Опубликована: Янв. 1, 2024

A sequential synthetic method toward 1,3-disubstituted carbazol-4-amines is reported and an interesting C–S metathesis process disclosed.

Язык: Английский

---

Copper Catalyzed Heteroannelation Reaction between 4‐Thiazolidinones and O‐Acetyl Oximes to Synthesize 2,5‐Diphenyl‐3‐(Pyrimidin‐2‐yl)‐3,4‐Dihydro‐2H‐Pyrrolo‐[2,3‐d]‐Thiazole

ChemistrySelect, Год журнала: 2024, Номер 9(23)

Опубликована: Июнь 18, 2024

Abstract An intermolecular copper catalyzed heteroannelation reaction using Csp 3 ‐Csp radical coupling approach has been accomplished to synthesize 2,5‐diphenyl‐3‐(pyrimidin‐2‐yl)‐3,4‐dihydro‐2 H ‐pyrrolo[2,3‐ d ]thiazole. C−C between 4‐thiazolidinones and O‐acetyl oximes under Cu catalyst further cyclizes get the target molecule thiazolidine‐fused nucleus. This unified method offers access novel fused heterocycles with pyrimidines bearing 4‐thiazolidinone in moderate higher yields. The optimization study includes various catalysts, oxidants, bases solvents at different temperatures.

Язык: Английский

---

Copper-catalyzed oxidative dehydrogenative [3 + 2] annulation of oximes with α-amino ketones: entry to 3-aminopyrroles

Organic Chemistry Frontiers, Год журнала: 2024, Номер 11(20), С. 5806 - 5812

Опубликована: Янв. 1, 2024

An unprecedented copper-catalyzed oxidative dehydrogenative [3 + 2] annulation of oximes with α-amino ketones involving dehydroxylation toward 3-aminopyrroles is disclosed.

Язык: Английский

---

Copper-Catalyzed [3 + 2] Annulation of O-Acyl Oximes with p-Hydroquinones for the Synthesis of 5-Hydroxyindoles

The Journal of Organic Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Окт. 4, 2024

A copper-catalyzed [3 + 2] annulation of

Язык: Английский

---