A one-pot DABCO-catalysed Michael addition of glycine imine-derived esters to trans-2-aroyl-3-arylacrylonitriles followed by a deprotection/cyclization/tautomerization sequence afforded tetrasubstituted N-unprotected trans-2-pyrrolines in up to 96% yield.
S. Meninno, A. Capobianco, A. Peluso and A. Lattanzi, Green Chem., 2015, 17, 2137 DOI: 10.1039/C4GC02191F
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