Cinchona Alkaloid Thiourea Mediated Asymmetric Mannich Reaction of Isocyanoacetates with Isatin-Derived Ketimines and Subsequent Cyclization: Enantioselective Synthesis of Spirooxindole Imidazolines
Zhao, Mei-Xin; Jing, Lei; Zhou, Hao; Shi, Min; RSC Adv.  (2015) –; doi:10.1039/C5RA17075C

data_7221980
_publ_section_title
;
 Cinchona Alkaloid Thiourea Mediated Asymmetric Mannich Reaction of
 Isocyanoacetates with Isatin-Derived Ketimines and Subsequent
 Cyclization: Enantioselective Synthesis of Spirooxindole Imidazolines
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C5RA17075C
_journal_year                    2015
_chemical_absolute_configuration ad
_chemical_formula_sum            'C24 H24 Br N3 O5'
_chemical_formula_weight         514.37
_space_group_IT_number           19
_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
;
2014-08-27 deposited with the CCDC.
2015-08-26 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                   8.8260(9)
_cell_length_b                   16.2679(17)
_cell_length_c                   16.3883(17)
_cell_measurement_temperature    173(2)
_cell_volume                     2353.0(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.1385
_diffrn_reflns_av_sigmaI/netI    0.0836
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            27004
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         1.76
_exptl_absorpt_coefficient_mu    1.787
_exptl_absorpt_correction_T_max  0.7880
_exptl_absorpt_correction_T_min  0.5002
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.452
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.615
_refine_diff_density_min         -0.470
_refine_diff_density_rms         0.071
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.004(12)
_refine_ls_extinction_coef       0.0070(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   0.959
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     299
_refine_ls_number_reflns         4152
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.959
_refine_ls_R_factor_all          0.0747
_refine_ls_R_factor_gt           0.0508
_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^)+(0.0687P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1121
_refine_ls_wR_factor_ref         0.1221
_reflns_number_gt                3091
_reflns_number_total             4152
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5ra17075c2.cif
_cod_data_source_block           z
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/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 3271 2015-04-21 07:52:19Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7221980