Regioselective Synthesis of Fused Furans by Decarboxylative Annulation of α,β‐Alkenyl Carboxylic Acid with Cyclic Ketone: Synthesis of Di‐Heteroaryl Derivatives.

Autor:	Agasti, Soumitra, Pal, Tapas, Achar, Tapas Kumar, Maiti, Siddhartha, Pal, Debasis, Mandal, Smita, Daud, Kishan, Lahiri, Goutam Kumar, Maiti, Debabrata
Předmět:	FURANS synthesis CARBOXYLIC acid derivatives CARBOXYLIC acids KETONE synthesis KETONIC acids ANNULATION
Zdroj:	Angewandte Chemie International Edition; 8/5/2019, Vol. 58 Issue 32, p11039-11043, 5p
Abstrakt:	α,β‐Alkenyl carboxylic acids undergo CuII‐mediated decarboxylative annulation reactions with aliphatic cyclic ketones to provide synthetically valuable di‐heterocycles. The annulation process tolerates a variety of aliphatic ketones and heterocyclic alkenyl carboxylic acids, producing substituted fused furan derivatives with complete regioselectivity. The current protocol offers a synthetically applicable pathway to construct a variety of oligo‐heterocycles through Cu‐mediated single‐electron transfer and decarboxylation. Notably, synthesis of relatively inaccessible di‐heterocycles has been achieved successfully using this protocol. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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