Selective synthesis of tetrahydroimidazo[1,2-a]pyridine and pyrrolidine derivatives via One-pot two-step reaction
Zhang, Yu; Sun, Jing; Shen, Guo-Liang; Yan, Chao Guo; Org. Biomol. Chem.  (2017) –; doi:10.1039/C7OB01860F

data_7155840
_publ_section_title
;
 Selective synthesis of tetrahydroimidazo[1,2-a]pyridine and pyrrolidine
 derivatives via One-pot two-step reaction
;
_journal_name_full               'Org. Biomol. Chem.'
_journal_paper_doi               10.1039/C7OB01860F
_journal_year                    2017
_chemical_formula_moiety         'C21 H23 N3 O7'
_chemical_formula_sum            'C21 H23 N3 O7'
_chemical_formula_weight         429.42
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-06-17 deposited with the CCDC.
2017-08-18 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 96.310(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.771(4)
_cell_length_b                   10.369(3)
_cell_length_c                   20.983(6)
_cell_measurement_reflns_used    9892
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      24.83
_cell_measurement_theta_min      2.19
_cell_volume                     2545.5(14)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0623
_diffrn_reflns_av_sigmaI/netI    0.0490
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            39370
_diffrn_reflns_theta_full        27.57
_diffrn_reflns_theta_max         27.57
_diffrn_reflns_theta_min         1.95
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.982
_exptl_absorpt_correction_T_min  0.970
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.121
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             904
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.22
_platon_squeeze_details          ' '
_refine_diff_density_max         0.358
_refine_diff_density_min         -0.545
_refine_diff_density_rms         0.102
_refine_ls_extinction_coef       0.011(3)
_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   1.103
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     285
_refine_ls_number_reflns         5860
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.103
_refine_ls_R_factor_all          0.1234
_refine_ls_R_factor_gt           0.0858
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1526P)^2^+1.4100P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2710
_refine_ls_wR_factor_ref         0.2940
_reflns_number_gt                3730
_reflns_number_total             5860
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7ob01860f2.cif
_cod_data_source_block           3e
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 
;
_cod_original_cell_volume        2545.5(13)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7155840