New Efficient Copper(Ⅱ)-catalyzed Direct Access to Primary Amide from Aldehyde under Solvothermal Co

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Two 1-methyl-1H-benzo[d]imidazole derivatives, C_(18)H_(14)CuN_4O_4·C_4H_8O_2(1) and C_9H_9N_3O(2), have been synthesized and characterized by NMR, MS, FT-IR, elementary analysis and X-ray single-crystal diffraction. Compound 1 crystallizes in monoclinic, space group P2_1/n with a = 9.6888(3), b = 7.3772(2), c = 14.3277(4) ?, β = 95.819(3)°, V = 1018.81(5) ?~3, M_r = 501.98, Z = 2, D_c = 1.636 g/cm~3, F(000) = 518, μ = 1.123 mm~(-1), MoKα radiation(λ = 0.71073 ?), the final R = 0.0325 and wR = 0.0859 for 1821 observed reflections with I > 2σ(I). Compound 2 crystallizes in monoclinic, space group C2/c with a = 14.2908(14), b = 14.4268(13), c = 8.4802(6) ?, β = 108.513(9)o, V = 1657.9(3) ?~3, M_r = 175.19, Z = 8, D_c = 1.404 g/cm~3, F(000) = 736, μ = 0.097 mm~(-1), Mo Kα radiation(λ = 0.71073 ?), the final R = 0.0563 and wR = 0.1531 for 1231 observed reflections with I > 2σ(I). Intermolecular(N-H···N, N-H···O) and intramolecular(N-H···N, C-H···O) hydrogen bonds, as well as C-H···π and π-π stacking interactions, help to stabilize the crystal structure of compound 2. Two 1-methyl-1H-benzo [d] imidazole derivatives, C_ (18) H_ (14) CuN_4O_4 · C_4H_8O_2 (1) and C_9H_9N_3O (2), have been synthesized and characterized by NMR, MS, FT- Compound 1 crystallizes in monoclinic space group P2_1 / n with a = 9.6888 (3), b = 7.3772 (2), c = 14.3277 (4) , V = 1018.81 (5)? ​​~ 3, M_r = 501.98, Z = 2, D_c = 1.636 g / cm ~ 3, F (000) = 518 and μ = 1.123 mm ~ 0.71073?), The final R = 0.0325 and wR = 0.0859 for 1821 observed reflections with I> 2σ (I). Compound 2 crystallizes in monoclinic space group C2 / c with a = 14.2908 (14), b = 14.4268 , C = 8.4802 (6) ?, β = 108.513 (9) o, V = 1657.9 (3)? ~ 3, M_r = 175.19, Z = 8, D_c = 1.404 g / cm ~ 3, F , μ = 0.097 mm -1, Mo Kα radiation (λ = 0.71073?), the final R = 0.0563 and wR = 0.1531 for 1231 observed reflections with I> 2σ (I). Intermolecular (NH ··· N, NH ··· O) and intramolecular (NH ··· N, CH ··· O) hydrogen bonds, a s well as C-H π and π-π stacking interactions, help to stabilize the crystal structure of compound 2.
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