Amino-modified Merrifield resins as recyclable catalysts for the safe and sustainable preparation of functionalized α-diazo carbonyl compounds

Fantinel, Mariane; Valiati, Nayara; Moro, Pedro A.M.; Sá, Marcus M.

doi:10.1016/j.tet.2021.132081

Tetrahedron

2021

DOI: 10.1016/j.tet.2021.132081

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Amino-modified Merrifield resins as recyclable catalysts for the safe and sustainable preparation of functionalized α-diazo carbonyl compounds

Mariane Fantinel

Nayara Valiati

Pedro A.M. Moro

et al.

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Cited by 5 publications

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One‐Pot Synthesis of α‐Diazo‐γ,δ‐unsaturated Esters as Versatile Building Blocks for Functionalized Dienes, Cyclopentenes, and 5,7‐Fused Bicycles

Russo

Sá

2021

Eur J Org Chem

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The synthesis of novel allylic α‐diazo carbonyl compounds was achieved through a one‐pot strategy involving base‐catalyzed allylation of 1,3‐dicarbonyls with readily available allylic bromides followed by the deacylative diazo transfer reaction. Besides the broad substrate scope related to this method, other relevant features include the use of simple and inexpensive reagents, non‐toxic solvents and mild reaction conditions. The synthetic utility of these α‐diazo‐γ,δ‐unsaturated esters was further demonstrated through rhodium‐catalyzed transformations, where the type of product formed is dependent on both the substrate and catalyst employed. Thus, treating α‐diazo‐γ,δ‐unsaturated esters with catalytic Rh2(pfb)4 in acetonitrile under reflux resulted in a diastereoselective β‐hydride migration to give 2Z,4E‐dienes in good yields. On the other hand, the combination of Rh2(OAc)4 as the catalyst in toluene under reflux for 10 min led the aryl‐substituted diazo compounds to a regioselective intramolecular Buchner reaction to furnish 5,7‐fused bicyclic tetraenes in high yields, while the alkyl‐substituted analogues undergo intramolecular C–H insertion to give functionalized cyclopentenes of anti‐configuration.

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One‐Pot Synthesis of α‐Diazo‐γ,δ‐unsaturated Esters as Versatile Building Blocks for Functionalized Dienes, Cyclopentenes, and 5,7‐Fused Bicycles

Russo

Sá

2021

Eur J Org Chem

Self Cite

View full text Add to dashboard Cite

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Synthetic and catalytic perspectives of polystyrene supported metal catalyst

Kumari,

Kumar,

Karan

et al. 2024

J IRAN CHEM SOC

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Chitosan as a sustainable heterogeneous catalyst for the preparation of functionalized α-diazo carbonyl compounds

Diogo¹,

Moro²,

Costin³

et al. 2023

Tetrahedron Green Chem

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Amino-modified Merrifield resins as recyclable catalysts for the safe and sustainable preparation of functionalized α-diazo carbonyl compounds

Cited by 5 publications

References 72 publications

One‐Pot Synthesis of α‐Diazo‐γ,δ‐unsaturated Esters as Versatile Building Blocks for Functionalized Dienes, Cyclopentenes, and 5,7‐Fused Bicycles

One‐Pot Synthesis of α‐Diazo‐γ,δ‐unsaturated Esters as Versatile Building Blocks for Functionalized Dienes, Cyclopentenes, and 5,7‐Fused Bicycles

Synthetic and catalytic perspectives of polystyrene supported metal catalyst

Chitosan as a sustainable heterogeneous catalyst for the preparation of functionalized α-diazo carbonyl compounds

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