Ma X, Meng S, Zhang X, Zhang Q, Yan S, Zhang Y, Zhang W. Synthesis of pyrrolidinedione-fused hexahydropyrrolo[2,1-
a]isoquinolines via three-component [3 + 2] cycloaddition followed by one-pot
N-allylation and intramolecular Heck reactions.
Beilstein J Org Chem 2020;
16:1225-1233. [PMID:
32550934 PMCID:
PMC7277624 DOI:
10.3762/bjoc.16.106]
[Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 05/26/2020] [Indexed: 12/13/2022] Open
Abstract
Two kinds of [3 + 2] cycloaddition intermediates generated from the three-component reactions of 2-bromobenzaldehydes and maleimides with amino esters or amino acids were used for a one-pot N-allylation and intramolecular Heck reactions to form pyrrolidinedione-fused hexahydropyrrolo[2,1-a]isoquinolines. The multicomponent reaction was combined with one-pot reactions to make a synthetic method with good pot, atom and step economy. MeCN was used as a preferable green solvent for the reactions.
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