A sequential one-pot approach to 1,2,4,5-tetrasubstituted-2H-imidazole synthesis from disubstituted alkynes
Boominathan, Siva Senthil Kumar; Chen, Chung-Yu; Huang, Po-Jui; Hou, Ruei-Jhih; Wang, Jeh-Jeng; New J. Chem. 39 (2015) 6914–; doi:10.1039/C5NJ00959F

data_7054992
_publ_section_title
;
 A sequential one-pot approach to 1,2,4,5-tetrasubstituted-2H-imidazole
 synthesis from disubstituted alkynes
;
_journal_issue                   9
_journal_name_full               'New J. Chem.'
_journal_page_first              6914
_journal_paper_doi               10.1039/C5NJ00959F
_journal_volume                  39
_journal_year                    2015
_chemical_formula_moiety         'C17 H16 N2'
_chemical_formula_sum            'C17 H16 N2'
_chemical_formula_weight         248.32
_space_group_IT_number           80
_symmetry_cell_setting           tetragonal
_symmetry_Int_Tables_number      80
_symmetry_space_group_name_Hall  'I 4bw'
_symmetry_space_group_name_H-M   'I 41'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-06-03 deposited with the CCDC.
2015-06-29 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.6396(6)
_cell_length_b                   10.6396(6)
_cell_length_c                   13.8377(8)
_cell_measurement_reflns_used    4975
_cell_measurement_temperature    284(2)
_cell_measurement_theta_max      26.13
_cell_measurement_theta_min      3.83
_cell_volume                     1566.44(15)
_computing_cell_refinement       'SAINT V7.34A (Bruker AXS, 2006)'
_computing_data_collection       'APEX2 (Bruker AXS, 2010)'
_computing_data_reduction        'SAINT V7.34A (Bruker AXS, 2006)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      284(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0242
_diffrn_reflns_av_sigmaI/netI    0.0137
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            10603
_diffrn_reflns_theta_full        26.29
_diffrn_reflns_theta_max         26.29
_diffrn_reflns_theta_min         3.83
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.062
_exptl_absorpt_correction_T_max  0.9852
_exptl_absorpt_correction_T_min  0.9706
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2012/1 (Bruker AXS Inc.)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.053
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.461
_refine_diff_density_min         -0.149
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1(8)
_refine_ls_extinction_coef       0.015(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.066
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     88
_refine_ls_number_reflns         1604
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.066
_refine_ls_R_factor_all          0.0763
_refine_ls_R_factor_gt           0.0689
_refine_ls_shift/su_max          0.010
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1398P)^2^+0.5449P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2026
_refine_ls_wR_factor_ref         0.2158
_reflns_number_gt                1427
_reflns_number_total             1604
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5nj00959f2.cif
_cod_data_source_block           hou0155
_cod_depositor_comments          'Adding full bibliography for 7054992.cif.'
_cod_database_code               7054992