Cascade synthesis of 1,2-dihydropyridine from dienaminodioate and an imine: a three-component approach
摘要:
A convenient synthesis of 1,2-dihydropyridine (1,2-DHP) has been developed from dienaminodioate and an imine mediated by trifluoroacetic acid in a one-pot cascade synthesis. The advantages associated with this transformation include conditions that are metal-free, room temperature, undistilled solvent, and expeditious in excellent yields. The substrate scope has been demonstrated with various aromatic, heteroaromatic, unsaturated aldehydes, and anilines, benzylic amines in impressive yields. (C) 2013 Elsevier Ltd. All rights reserved.
Cascade synthesis of 1,2-dihydropyridine from dienaminodioate and an imine: a three-component approach
摘要:
A convenient synthesis of 1,2-dihydropyridine (1,2-DHP) has been developed from dienaminodioate and an imine mediated by trifluoroacetic acid in a one-pot cascade synthesis. The advantages associated with this transformation include conditions that are metal-free, room temperature, undistilled solvent, and expeditious in excellent yields. The substrate scope has been demonstrated with various aromatic, heteroaromatic, unsaturated aldehydes, and anilines, benzylic amines in impressive yields. (C) 2013 Elsevier Ltd. All rights reserved.
A metal-free one-pot cascade synthesis of highly functionalized biaryl-2-carbaldehydes
作者:Chandrasekhar Challa、Jamsheena Vellekkatt、Jaice Ravindran、Ravi S. Lankalapalli
DOI:10.1039/c4ob01829j
日期:——
A metal-free one-pot cascade annulation of acyclic substrates dienaminodioate, cinnamaldehydes and allyl amine was achieved for the synthesis of polyfunctional biaryl-2-carbaldehydes. The reaction proceeds at room temperature by a trifluoroacetic acid mediated Diels–Alder pathway. Synthetic applications of the resulting biaryl-2-carbaldehyde have been demonstrated by conversion into an array of diverse