Aijun Cui

Regioselective 2,6-dihalogenation of BODIPYs in 1,1,1,3,3,3-hexafluoro-2-propanol and preparation of novel meso-alkyl polymeric BODIPY dyes

Regioselective 2,6-halogenation of BODIPYs in hexafluoro-2-propanol (HFIP) afforded products in less than 5 min. Halogenated BODIPYs were subjected to Pd-catalyzed cross-coupling reactions to form novel meso-alkyl polymeric BODIPY dyes.

Facile synthesis of dimeric BODIPY and its catalytic activity for sulfide oxidation under visible light

An orthogonal dimeric BODIPY was easily prepared via condensation of 2,4-dimethylpyrrole and oxalyl dichloride, and was utilized as a visible-light-driven photocatalyst for the oxidation of sulfides. High catalytic efficiencies, and mild and green conditions are the major advantages of this protocol. Moreover, meso-carbalkoxylated BODIPYs could also be prepared using a similar one-pot condensation of 2,4-dimethylpyrrole, oxalyl dichloride and a series of alcohols.

{2-[(3,5-Dimethyl-2H-pyrrol-2-yl-idene-κN)(4-nitro-phen-yl)meth-yl]-3,5-dimethyl-1H-pyrrol-1-ido-κN}difluoridoboron.

In an effort to discover novel and potential boron–dipyrromethene (BODIPY) dyes, the title compound, C19H18BF2N3O2, was prepared from 2,4-dimethylpyrrole, 4-nitrobenzaldehyde and BF3·Et2O in a one-pot reaction. There are two independent molecules, A and B, in the asymmetric unit in which the dihedral angles between the benzene ring and boron–dipyrromethene mean plane have significantly different values [82.71 (8)° for molecule A and 73.16 (8)° for molecule B]. Intermolecular C—H⋯π interactions help to stabilize the crystal structure.

Aerobic Oxidation of Alcohols to Carbonyl Compounds Catalyzed by N-Hydroxyphthalimide (NHPI) Combined with CoTPP-Zn2Al-LDH

AbstractA catalytic system for the aerobic oxidation of alcohols by N-hydroxyphthalimide (NHPI) combined with cobalt porphyrin intercalated heterogeneous hybrid catalyst (CoTPP-Zn 2Al-LDH) has been developed. The results showed that this catalytic system can effectively catalyze the oxidation of alcohols to the corresponding carbonyl compounds. And the hybrid catalyst can be reused for five times with no appreciable reduction of activity. Graphical AbstractA facile and efficient method for the epoxidation of alkenes in the presence of catalytic amount of Co (III) complex supported on Fe3O4/SiO2 NPs is reported. Catalyst was characterized by transmission electron microscopy, fourier transform infrared spectroscopy, powder x-ray diffraction, thermogravimetric analysis and ultraviolet–visible spectroscopy.

A tetranuclear Sn(IV) 4-thiazolecarboxylate complex: synthesis, structure and catalytic behavior in the bulk ring-opening polymerization of glycolide

Abstract The reaction of 4-thiazolecarboxylic acid (Htzc) and dimethyltin(IV) dichloride with NaOH in mixed MeOH-H2O solvent led to the formation of a new Sn(IV) complex (Me2Sn)4(μ3-O)2(tzc)4 (1). Its structure has been characterized by elemental analysis, IR spectroscopy and single crystal and powder X-ray diffraction. Single-crystal X-ray diffraction revealed that complex 1 crystallizes in the monoclinic P21/c space group with Z = 2 and has a tetranuclear structure with crystallographically imposed centrosymmetry. The as-synthesized complex 1 was found to be active toward the bulk solvent-free polymerization of glycolide, producing poly(glycolic acid) with a number-average molecular weight up to 55.5 kDa.

A Zinc(II) Coordination Polymer with Tetraiodoterephthalate: Synthesis, Crystal Structure, and Luminescence

A new coordination polymer {[Zn(BDC-I4)- (DMSO)2]·(DMSO)2(H2O)4}n (1) was prepared from the reaction of Zn(II) nitrate with 2,3,5,6-tetraiodo-1,4- benzenedicarboxylic acid (H2BDC-I4) in DMSO=water and characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. Complex 1crystallizes in the orthorhombic space group Pnma and shows a zigzag chain coordination structure, which is assembled into a 2D network through weak C-H···O and C-H···π interactions. The thermal and photoluminescence properties of complex 1in the solid state are also reported Graphical Abstract A Zinc(II) Coordination Polymer with Tetraiodoterephthalate: Synthesis, Crystal Structure, and Luminescence