Visible Light Promoted Iron‐Catalyzed One‐Pot Synthesis of 2‐Arylimino‐2H‐Chromenes from 2‐Hydroxybenzyl Alcohols and β‐ Ketothioamides at Room Temperature

European Journal of Organic Chemistry, Год журнала: 2023, Номер 26(14)

Опубликована: Март 6, 2023

Abstract An efficient, environmentally benign and one‐pot approach for the synthesis of 2‐arylimino‐2 H ‐chromenes from 2‐hydroxybenzyl alcohols β‐ketothioamides at room temperature under visible light has been developed. The reported reaction conditions were favorable a wide range afforded good to excellent yields respective products. low cost air stable Knölker iron catalyst employed dehydrogenation photolysis that would usually require higher temperature.

Язык: Английский

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Recent Advances in Non-Precious Metal Catalysis

Organic Process Research & Development, Год журнала: 2023, Номер 27(11), С. 1931 - 1953

Опубликована: Ноя. 1, 2023

This Review offers a comprehensive overview of the latest advancements in nonprecious metal catalysis (NPMC) research, focusing on period between July and October 2022. As part an ongoing review series, this account emphasizes diverse synthetic applications Ni, Cu, Fe catalysis. The noticeable surge NPMC publications reflects growing interest among academic industrial research laboratories exploring harnessing catalytic potential these metals.

Язык: Английский

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Valorization of terpenols under iron catalysis

Journal of Catalysis, Год журнала: 2023, Номер 421, С. 309 - 318

Опубликована: Март 28, 2023

Язык: Английский

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Development and mechanistic investigation of the dehydrogenation of alcohols with an iron(iii) salen catalyst

Organic & Biomolecular Chemistry, Год журнала: 2023, Номер 21(23), С. 4794 - 4800

Опубликована: Янв. 1, 2023

The iron(III) salen complex (R,R)-N,N'-bis(salicylidene)-1,2-cyclohexanediamineiron(III) chloride has been developed as a catalyst for the acceptorless dehydrogenation of alcohols. catalyzes direct synthesis imines in good yields from different primary alcohols and amines with liberation hydrogen gas. mechanism investigated experimentally labelled substrates theoretically density functional theory calculations. In contrast to corresponding manganese(III) salen-catalyzed dehydrogenation, it not possible identify homogeneous catalytic pathway iron complex. Instead, poisoning experiments trimethylphosphine mercury indicated that catalytically active species are heterogeneous small particles.

Язык: Английский

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Photoredox catalysis leading to triazolo-quinoxalinones at room temperature: selectivity of the rate determining step

Organic & Biomolecular Chemistry, Год журнала: 2022, Номер 20(47), С. 9330 - 9336

Опубликована: Янв. 1, 2022

The mechanism for the photoredox catalysed synthesis of triazoloquinoxalinones is unveiled by DFT calculations. Predictive chemistry gives recipe substituents, sterically and electronically, can fit to perform reaction at room temperature.

Язык: Английский

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