Homochiral Metal–Organic Frameworks with Enantiopure Proline Units for the Catalytic Synthesis of β-Lactams

Semi-conductive helical homochiral metal–organic frameworks based on enantiomeric proline derivatives

Chiral ligands (S)-H₂PCA and (R)-H₂PCA were synthesized by attaching (S)- and (R)-proline to 1,4-dicarboxybenzene. They further reacted with Cu(ii) and Co(ii) ions to obtain two pairs of helical homochiral MOFs with photocatalytic behaviours.

The synthesis and applications of chiral pyrrolidine functionalized metal–organic frameworks and covalent-organic frameworks

Proline based ligands show versatile functionality to construct chiral MOFs and COFs; meanwhile, the resulted frameworks are potential materials for enantioselective adsorption and asymmetric catalysis.

Recent advances in β-lactam synthesis

During the past century, β-lactams have been identified as the core of penicillin and since then several strategies have been developed for their synthesis.

Color tuning and white light emission by codoping in isostructural homochiral lanthanide metal–organic frameworks

Pure white-light emission and fluent light-emitting color change can be facilely obtained by codoping isostructural homochiral lanthanide metal–organic frameworks.

Two pairs of Zn(ii) coordination polymer enantiomers based on chiral aromatic polycarboxylate ligands: synthesis, crystal structures and properties

Two pairs of Zn-based chiral coordination polymers were synthesized under hydrothermal conditions, exhibiting medium second-harmonic generation (SHG) activities and luminescent behavior.

A pair of homochiral porous metal–organic frameworks with a helical metal-carboxylate layer

By employment of predesigned proline derivative ligands ((R)-PIA and (S)-PIA) to assemble with bipy and Cd²⁺ ion, a pair of porous homochiral metal–organic frameworks (HMOFs) with a wavy Cd-PIA layer has been synthesized.

Chlorophosphines as auxiliary ligands in ruthenium-catalyzed nitrile hydration reactions: application to the preparation of β-ketoamides

The utility of chlorophosphines as auxiliary ligands in metal-catalyzed nitrile hydration reactions has been demonstrated, along with their application in the preparation of β-ketoamides.

Integration of a semi-rigid proline ligand and 4,4'-bipyridine in the synthesis of homochiral metal-organic frameworks with helices

A pair of 3-D homochiral metal-organic frameworks (HMOFs) based on a mixed semi-rigid 5-(2-carboxypyrrolidine-1-carbonyl)isophthalate (PIA) ligand and rigid 4,4'-bipyridine (bipy), [Co3((R)-PIA)2(bipy)3]·6H2O (1-D) and [Co3((S)-PIA)2(bipy)3]·6H2O (1-L) are synthesized and structurally characterized. They are enantiomers and exhibit three-dimensional open frameworks. In each structure, the PIA ligands link the Co centers into homochiral frameworks with large open channels that are occupied by the bipy ligands. Interesting helical chains built from the connectivity between PIA ligands and Co centers are presented. Antiferromagnetic coupling is observed in 1-D. These results demonstrated that the mixed ligand approach is successful for the construction of HMOFs.

Postsynthetic Modification of an Alkyne-Tagged Zirconium Metal-Organic Framework via a "Click" Reaction

Herein, we report the synthesis and postsynthetic modification of a novel alkyne-tagged zirconium metal-organic framework, UiO-68-alkyne. The alkynyl groups in the pore surface were subjected to a "click" reaction, achieving quantitative conversion and maintaining the crystallinity of the framework.

Integration of rigid and flexible organic parts for the construction of a homochiral metal–organic framework with high porosity

A pair of predesigned proline derivative ligands was used to construct a pair of homochiral metal–organic frameworks with high porosity.

Two robust metal–organic frameworks with uncoordinated N atoms for CO2adsorption

Two highly porous metal–organic frameworks are successfully constructed through the assembling of Co/Ni ions and mixed ligands. From the contribution of the uncoordinated tetrazolate N atoms of the ligand the two complexes show high CO₂adsorption capacities, serving as potential CO₂adsorption materials.