Synthesis and Investigations of Chiral NNO Type Copper(II) Coordination Polymers

Herein, we report the synthesis and characterizations of chiral copper(II) coordination polymers (CPs) based on Schiff base of (S)-2-aminomethylpyrrolidine and salicylaldehyde derivatives. Single crystal X-ray analysis showed that copper(II) complex is 1D CP, with the repeating units LCu-OAc (L=ligand) organized in a perpendicular manner, where the copper(II) atoms are six-coordinated and have a distorted octahedral geometry. Also complex with chlorine counter ion having unusual dimeric structure was synthesized and characterized. It was demonstrated that CPs catalyze the enantioselective Henry reaction with up to 78% ee. © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinhei

Synthesis and Investigations of Chiral NNO Type Copper(II) Coordination Polymers

Herein, we report the synthesis and characterizations of chiral copper(II) coordination polymers (CPs) based on Schiff base of (S)-2-aminomethylpyrrolidine and salicylaldehyde derivatives. Single crystal X-ray analysis showed that copper(II) complex is 1D CP, with the repeating units LCu-OAc (L=ligand) organized in a perpendicular manner, where the copper(II) atoms are six-coordinated and have a distorted octahedral geometry. Also complex with chlorine counter ion having unusual dimeric structure was synthesized and characterized. It was demonstrated that CPs catalyze the enantioselective Henry reaction with up to 78% ee. © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinhei

Nickel-coordinated chiral enols and Michael addition intermediate stabilized by the Ni–C bond

A representative within a new class of chiral enol NiII complexes derived from a Schiff base of aminoacetone and (S)-2-N-(N-benzylprolinoylamino)benzophenone was prepared, and its performance in nucleophilic addition was estimated. The complex was inert towards aldehydes and activated C=C bonds but reacted with carboxylic anhydrides and di-tert-butyl acetylenedicarboxylate. An unusual Michael addition intermediate stabilized by the Ni–C bond was discovered in the latter reaction. © 201