Enzymatic multicomponent reaction for simultaneous synthesis of two important scaffolds, pyridin-2-ones and α-alkylated nitriles
摘要:
An efficient approach for the synthesis of highly substituted pyridin-2-one derivatives and alpha-alkylated nitriles through enzymatic multicomponent reaction (MCR) was developed. This MCR involved biomimetic reduction between 3,4-dihydropyridin-2-one and activated olefin, both of which were in situ generated in the Acylase Amano (AA)-catalyzed domino reaction starting from benzaldehyde, cyanoacetamide and ketone. A wide range of substituted benzaldehydes and ketones were accepted by this reaction. Both final products (pyridin-2-one derivatives and alpha-alkylated nitriles) were important skeletons and synthetic intermediates. The synthetic application of prepared alpha-alkylated nitrile was demonstrated by converting it into the corresponding alpha-alkyl-beta(2)-amino acid with high yield. (C) 2014 Elsevier Ltd. All rights reserved.
Enzymatic multicomponent reaction for simultaneous synthesis of two important scaffolds, pyridin-2-ones and α-alkylated nitriles
摘要:
An efficient approach for the synthesis of highly substituted pyridin-2-one derivatives and alpha-alkylated nitriles through enzymatic multicomponent reaction (MCR) was developed. This MCR involved biomimetic reduction between 3,4-dihydropyridin-2-one and activated olefin, both of which were in situ generated in the Acylase Amano (AA)-catalyzed domino reaction starting from benzaldehyde, cyanoacetamide and ketone. A wide range of substituted benzaldehydes and ketones were accepted by this reaction. Both final products (pyridin-2-one derivatives and alpha-alkylated nitriles) were important skeletons and synthetic intermediates. The synthetic application of prepared alpha-alkylated nitrile was demonstrated by converting it into the corresponding alpha-alkyl-beta(2)-amino acid with high yield. (C) 2014 Elsevier Ltd. All rights reserved.
Enzymatic multicomponent reaction for simultaneous synthesis of two important scaffolds, pyridin-2-ones and α-alkylated nitriles
作者:Zhi-Qiang Liu、Yu-Jing Hu、Xiao-Yang Chen、Qi Wu、Xian-Fu Lin
DOI:10.1016/j.tet.2014.12.021
日期:2015.1
An efficient approach for the synthesis of highly substituted pyridin-2-one derivatives and alpha-alkylated nitriles through enzymatic multicomponent reaction (MCR) was developed. This MCR involved biomimetic reduction between 3,4-dihydropyridin-2-one and activated olefin, both of which were in situ generated in the Acylase Amano (AA)-catalyzed domino reaction starting from benzaldehyde, cyanoacetamide and ketone. A wide range of substituted benzaldehydes and ketones were accepted by this reaction. Both final products (pyridin-2-one derivatives and alpha-alkylated nitriles) were important skeletons and synthetic intermediates. The synthetic application of prepared alpha-alkylated nitrile was demonstrated by converting it into the corresponding alpha-alkyl-beta(2)-amino acid with high yield. (C) 2014 Elsevier Ltd. All rights reserved.