One-pot three component α-aminoalkylation of conjugated nitroalkenes and nitrodienes
摘要:
Nitroethylenes possessing aryl, heteroaryl, and alkyl substituents at the beta-position as well as delta-substituted nitrobutadienes undergo facile aminoalkylation at the alpha-position upon treatment with formaldehyde and a secondary amine in the presence of imidazole and trifluoroacetic acid to afford alpha-aminoalkylated nitroalkenes and nitrodienes in good to excellent yield and stereoselectivity. (c) 2009 Elsevier Ltd. All rights reserved.
Nitroethylenes possessing aryl, heteroaryl, and alkyl substituents at the beta-position as well as delta-substituted nitrobutadienes undergo facile aminoalkylation at the alpha-position upon treatment with formaldehyde and a secondary amine in the presence of imidazole and trifluoroacetic acid to afford alpha-aminoalkylated nitroalkenes and nitrodienes in good to excellent yield and stereoselectivity. (c) 2009 Elsevier Ltd. All rights reserved.