Enantioselective construction of 3-substituted 3-amino-2-oxindoles containing an N,N-ketal skeleton via organocatalyzed aza-addition of isatin imines.
Zhang, Chen; Shang, Xinye; Cheng, Yuyu; Li, Fushuai; Zhao, Hanhui; Li, Pengfei; Li, Wenjun; Organic & biomolecular chemistry 17 (2019) 8374–8378; doi:10.1039/c9ob01870k

data_7157049
_publ_section_title
;
 Enantioselective construction of 3-substituted 3-amino-2-oxindoles
 containing an N,N-ketal skeleton via organocatalyzed aza-addition of
 isatin imines.
;
_journal_issue                   36
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              8374
_journal_page_last               8378
_journal_paper_doi               10.1039/c9ob01870k
_journal_volume                  17
_journal_year                    2019
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C22 H22 Br N5 O3'
_chemical_formula_sum            'C22 H22 Br N5 O3'
_chemical_formula_weight         484.35
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_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     dual
_audit_creation_date             2018-04-12
_audit_creation_method
;
Olex2 1.2
(compiled 2018.04.03 svn.r3497 for OlexSys, GUI svn.r5486)
;
_audit_update_record
;
2019-03-18 deposited with the CCDC.    2019-08-28 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.2380(4)
_cell_length_b                   10.6914(5)
_cell_length_c                   19.2761(8)
_cell_measurement_reflns_used    9752
_cell_measurement_temperature    100
_cell_measurement_theta_max      27.55
_cell_measurement_theta_min      2.25
_cell_volume                     2109.93(16)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_reduction        'SAINT v8.37A (Bruker, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100
_diffrn_detector                 'Bruker PHOTO 100 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker PHOTO 100 area detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0419
_diffrn_reflns_av_unetI/netI     0.0216
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_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       24
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            45681
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.548
_diffrn_reflns_theta_min         2.252
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.983
_exptl_absorpt_correction_T_max  0.2616
_exptl_absorpt_correction_T_min  0.1961
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction. wR2(int) was 0.0746 before and 0.0532 after correction. The Ratio of minimum to maximum transmission is 0.7496. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.525
_exptl_crystal_description       block
_exptl_crystal_F_000             992
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.35
_refine_diff_density_max         0.259
_refine_diff_density_min         -0.294
_refine_diff_density_rms         0.044
_refine_ls_abs_structure_details
;
 Flack x determined using 1974 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.011(2)
_refine_ls_extinction_coef       0.0061(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     284
_refine_ls_number_reflns         4871
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0213
_refine_ls_R_factor_gt           0.0196
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0155P)^2^+0.8990P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0435
_refine_ls_wR_factor_ref         0.0441
_reflns_Friedel_coverage         0.763
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                4723
_reflns_number_total             4871
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ob01870k2.cif
_cod_data_source_block           mo_cxy0344_0m
_cod_depositor_comments
'Adding full bibliography for 7157049--7157053.cif.'
_cod_database_code               7157049
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.544
_shelx_estimated_absorpt_t_min   0.512
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C5(H5A,H5B)
2.b Aromatic/amide H refined with riding coordinates:
 N2(H2), C1(H1), C2(H2A), C3(H3), C14(H14), C15(H15), C16(H16), C17(H17),
 C19(H19), C20(H20), C22(H22)
2.c Idealised Me refined as rotating group:
 C10(H10A,H10B,H10C), C11(H11A,H11B,H11C), C23(H23A,H23B,H23C)
;
_shelx_res_checksum              74858
_olex2_submission_special_instructions 'No special instructions were received'