An effective contribution to functionalized pyridines synthesis by way of an unusual rearrangement of amidines
摘要:
A new synthesis of 2-pyridineacetamides was developed starting from pyran-2-one N-functionalized amidines 4. Secondary amines reacted in a sealed tube with amidines 4 and, by nucleophilic attack on pyran-2-one nucleus and thermal rearrangement, afforded exclusively the 2-pyridineacetamide derivatives 6 or a mixture of amide compounds 6 and 7 depending on the substituents linked to C-alpha of the starting amidine 4. (C) 2002 Elsevier Science Ltd. All rights reserved.
An effective contribution to functionalized pyridines synthesis by way of an unusual rearrangement of amidines
摘要:
A new synthesis of 2-pyridineacetamides was developed starting from pyran-2-one N-functionalized amidines 4. Secondary amines reacted in a sealed tube with amidines 4 and, by nucleophilic attack on pyran-2-one nucleus and thermal rearrangement, afforded exclusively the 2-pyridineacetamide derivatives 6 or a mixture of amide compounds 6 and 7 depending on the substituents linked to C-alpha of the starting amidine 4. (C) 2002 Elsevier Science Ltd. All rights reserved.
An effective contribution to functionalized pyridines synthesis by way of an unusual rearrangement of amidines
作者:Egle M Beccalli、Alessandro Contini、Pasqualina Trimarco
DOI:10.1016/s0040-4020(01)01197-8
日期:2002.2
A new synthesis of 2-pyridineacetamides was developed starting from pyran-2-one N-functionalized amidines 4. Secondary amines reacted in a sealed tube with amidines 4 and, by nucleophilic attack on pyran-2-one nucleus and thermal rearrangement, afforded exclusively the 2-pyridineacetamide derivatives 6 or a mixture of amide compounds 6 and 7 depending on the substituents linked to C-alpha of the starting amidine 4. (C) 2002 Elsevier Science Ltd. All rights reserved.