Magnetically separable g‐C₃N₄ hybrid nanocomposite: Highly efficient and eco‐friendly recyclable catalyst for one‐pot synthesis of α‐aminonitriles

Abstract

A magnetically separable graphitic carbon nitride nanocomposite (Fe3O4/g‐C3N4) as a catalyst for the three‐component condensation reactions of carbonyl compounds, amines and trimethylsilylcyanide was thoroughly investigated. The reaction of these three components was found to be efficient, economical and green and took place in the presence of a catalytic amount of the magnetically separable catalyst to yield the corresponding α‐aminonitriles in good to excellent yields. The prepared nanocomposite was characterized using scanning electron microscopy and energy‐dispersive X‐ray and Fourier transform infrared spectroscopies. The nanocomposite was also found to be reusable could be recovered easily and reused several times without distinct deterioration in its catalytic activity.

One‐Pot Synthesis of α‐Amino Nitrile Units through Alkylative Strecker Cyanation from Formamides

“…2‐(4‐Chlorophenyl)‐2‐(piperidin‐1‐yl)acetonitrile (16) : [22] Obtained as yellow solid (m=246.5 mg, 84 % yield). Purification by flash chromatography (Diethyl ether/Pentane: 1/99).…”

“…1 H NMR (400 MHz, CDCl 3 ) δ 7.56-7.63 (m, 2H), 7.29-7.42 (m, 3H), 4.97 (s, 1H), 3.18 (septet, J = 6.9 Hz, 2H), 1.28 (d, J = 6.9 Hz, 6H), 1.04 (d, J = 6.9 Hz, 6H). 13 16): [22] Obtained as yellow solid (m = 246.5 mg, 84 % yield). Purification by flash chromatography (Diethyl ether/Pentane: 1/99).…”

Study on Oxidative Condensation of Toluene and Hydrazine/Aniline Catalyzed by Copper Complex Immobilized on Functionalized Graphene Oxide

“…34 The FT-IR results for g-C 3 N 4 -IL-CO 2 H-Cu are shown in Figure 1f. According to the literature, 35 the peak at 806 cm −1 is related to heptazine ring, the broad peak at 1240 cm −1 is related to Si−O bond, signals between 1300 and 1600 cm −1 show the presence of s-triazine derivatives, the sharp peak around 1670 cm −1 is assigned to CO 2 H group, and the broad bond at 3000−3500 cm −1 is assigned to N−H bond.…”

Designing a new magnetic g-C 3 N 4 nanocatalyst based on Ag nanoparticles supported by β-cyclodextrin for effective reduction of nitroaromatic compounds

“…Additionally, g-C 3 N 4 bene ts from its abundance of inexpensive raw materials, such as ammonium thiocyanate, thiourea, urea, cyanamide, dicyandiamide, and melamine, which facilitate its cost-effective synthesis [25][26][27]. With its π-conjugated graphitic planes resulting from the sp 2 hybridization of carbon and nitrogen atoms, g-C 3 N 4 exhibits remarkable chemical stability.…”