Amination/annulation of chlorobutenones with chiral amine compounds: synthesis of 1,2,4-trisubstituted pyrroles

Three-component reactions of isocyanoacetates, amines and 3-formylchromones initiated by an unexpected aza-Michael addition

We present herein a new mode of three-component reactions between isocyanoacetates, amines and 3-formylchromones. Mechanistic and DFT studies reveals that this Ag-catalyzed process is initiated by a facile aza-Michael addition.

Ethyl 4-(2-chloro-quinolin-3-yl)-1-phenyl-1H-pyrrole-3-carboxyl-ate

In the mol-ecule of the title compound, C(22)H(17)ClN(2)O(2), the dihedral angles formed by the pyrrole ring with the quinoline and phenyl rings are 67.93 (8) and 28.40 (11)°, respectively. In the crystal structure, mol-ecules are linked into dimers by inter-molecular C-H⋯O hydrogen bonds.