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Published in 2019 at "ChemCatChem"
DOI: 10.1002/cctc.201901677
Abstract: An asymmetric vinylogous Mannich reaction between 3‐cyano‐4‐methylcoumarins and N‐Boc isatin imines catalysed by amide phosphonium salt is described. This method allows the formation of intriguing adducts bearing both 3‐aminooxindole and coumarin moieties in excellent yields…
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Keywords:
isatin imines;
amide phosphonium;
salt catalyzed;
vinylogous mannich ... See more keywords
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Published in 2017 at "Organic chemistry frontiers"
DOI: 10.1039/c6qo00546b
Abstract: An asymmetric vinylogous Mannich reaction between α,α-dicyanoolefins and N-Boc isatin imines has been developed by employing 1 mol% bifunctional amide phosphonium salt as a phase transfer catalyst and K2CO3 as a base. When α,α-dicyanoolefins derived…
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Keywords:
mannich reaction;
isatin imines;
amide phosphonium;
asymmetric vinylogous ... See more keywords