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_7157050
_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_formula_moiety         'C26 H24 Br N5 O3'
_chemical_formula_sum            'C26 H24 Br N5 O3'
_chemical_formula_weight         534.41
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2018-05-21
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.18 svn.r3508 for OlexSys, GUI svn.r5497)
;
_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            8
_cell_length_a                   17.594(2)
_cell_length_b                   10.7941(13)
_cell_length_c                   25.355(3)
_cell_measurement_reflns_used    9073
_cell_measurement_temperature    150
_cell_measurement_theta_max      27.45
_cell_measurement_theta_min      2.35
_cell_volume                     4815.2(10)
_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  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      150
_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 1.000
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker PHOTO 100 area detector'
_diffrn_measurement_method       '\w and \f 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  0.0545
_diffrn_reflns_av_unetI/netI     0.0396
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            41959
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.544
_diffrn_reflns_theta_min         2.315
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.746
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5898
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction. wR2(int) was 0.0829 before and 0.0531 after correction. The Ratio of minimum to maximum transmission is 0.7910. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.474
_exptl_crystal_description       block
_exptl_crystal_F_000             2192
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.36
_refine_diff_density_max         0.472
_refine_diff_density_min         -0.566
_refine_diff_density_rms         0.065
_refine_ls_extinction_coef       0.00126(14)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2016/6 (Sheldrick 2016)'
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     320
_refine_ls_number_reflns         5532
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.0565
_refine_ls_R_factor_gt           0.0366
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0263P)^2^+5.4892P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0747
_refine_ls_wR_factor_ref         0.0821
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4330
_reflns_number_total             5532
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ob01870k2.cif
_cod_data_source_block           cxy0376
_cod_depositor_comments
'Adding full bibliography for 7157049--7157053.cif.'
_cod_original_cell_volume        4815.1(10)
_cod_database_code               7157050
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_max   0.572
_shelx_estimated_absorpt_t_min   0.542
_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:
 C6(H6A,H6B)
2.b Aromatic/amide H refined with riding coordinates:
 N1(H1), C8(H8), C9(H9), C10(H10), C13(H13), C14(H14), C16(H16), C18(H18),
 C19(H19), C21(H21), C22(H22), C23(H23), C24(H24)
2.c Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C11(H11A,H11B,H11C), C26(H26A,H26B,H26C)
;
_shelx_res_checksum              78772
_olex2_submission_special_instructions 'No special instructions were received'