Iodine-NH<sub>4</sub>OAc mediated regioselective synthesis of 2-aroyl-3-arylimidazo[1,2-a]pyridines from 1,3-diaryl-prop-2-en-1-ones.
Kour, Dilpreet; Gupta, Annah; Kapoor, Kamal K.; Gupta, Vivek K.; Rajnikant, ?; Singh, Deepika; Das, Parthasarathi; Organic & biomolecular chemistry 16 (2018) 1330–1336; doi:10.1039/c7ob02750h

data_7156076
_publ_section_title
;
 Iodine-NH<sub>4</sub>OAc mediated regioselective synthesis of
 2-aroyl-3-arylimidazo[1,2-a]pyridines from 1,3-diaryl-prop-2-en-1-ones.
;
_journal_issue                   8
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              1330
_journal_page_last               1336
_journal_paper_doi               10.1039/c7ob02750h
_journal_volume                  16
_journal_year                    2018
_chemical_formula_moiety         'C20 H13 Cl N2 O'
_chemical_formula_sum            'C20 H13 Cl N2 O'
_chemical_formula_weight         332.77
_chemical_name_systematic
;
(4-Chlorophenyl)(3-phenylimidazo[1,2-a]pyridin-2-yl)methanone 
;
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2018-01-18 deposited with the CCDC.
2018-01-22 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                   6.3278(5)
_cell_length_b                   13.3923(10)
_cell_length_c                   18.8088(14)
_cell_measurement_reflns_used    1328
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.8310
_cell_measurement_theta_min      3.8700
_cell_volume                     1593.9(2)
_computing_cell_refinement       'CrysAlisPro (Oxford Diffraction,2010)'
_computing_data_collection       'CrysAlisPro (Oxford Diffraction,2010)'
_computing_data_reduction        'CrysAlisPro (Oxford Diffraction,2010)'
_computing_molecular_graphics    'ORTEP3 (Farrugia, 1997)'
_computing_publication_material  PLATON(Spek,2009)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 16.1049
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Xcalibur, Sapphire3'
_diffrn_measurement_method       'Omega scan'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0229
_diffrn_reflns_av_sigmaI/netI    0.0588
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            4421
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         3.59
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.248
_exptl_absorpt_correction_T_max  0.952
_exptl_absorpt_correction_T_min  0.942
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Crys Alis Red'
_exptl_crystal_colour            WHITE
_exptl_crystal_density_diffrn    1.387
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             688
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.210
_refine_diff_density_min         -0.165
_refine_diff_density_rms         0.033
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(8)
_refine_ls_extinction_coef       0.0084(10)
_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   0.992
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     218
_refine_ls_number_reflns         3071
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.992
_refine_ls_R_factor_all          0.0676
_refine_ls_R_factor_gt           0.0425
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0277P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0744
_refine_ls_wR_factor_ref         0.0841
_reflns_number_gt                2301
_reflns_number_total             3071
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7ob02750h2.cif
_cod_data_source_block           kapoor-d171
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 7156076.cif.
;
_cod_original_sg_symbol_H-M      'P21 21 21'
_cod_database_code               7156076