Thermal-mediated catalyst-free heterolytic cleavage of 3-halooxindoles: rapid access to 3-functionalized-2-oxindoles
Liu, Xiong-Li; Yue, Jing; Chen, Shuang; Liu, Huan-Huan; Yang, Kai-Mo; Feng, Ting-Ting; Zhou, Ying; Organic Chemistry Frontiers 6 (2019) 256–; doi:10.1039/C8QO01222A

data_1554548
_publ_section_title
;
 Thermal-mediated catalyst-free heterolytic cleavage of 3-halooxindoles:
 rapid access to 3-functionalized-2-oxindoles
;
_journal_issue                   2
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              256
_journal_paper_doi               10.1039/C8QO01222A
_journal_volume                  6
_journal_year                    2019
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C16 H14 Cl N O2'
_chemical_formula_sum            'C16 H14 Cl N O2'
_chemical_formula_weight         287.73
_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'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2018-11-04 deposited with the CCDC.
2018-12-05 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.5976(9)
_cell_length_b                   10.3316(9)
_cell_length_c                   13.9249(13)
_cell_measurement_reflns_used    9900
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.02
_cell_measurement_theta_min      2.45
_cell_volume                     1380.8(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.960
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0196
_diffrn_reflns_av_unetI/netI     0.0182
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.960
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            15337
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.936
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         31.018
_diffrn_reflns_theta_min         2.455
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.277
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.384
_exptl_crystal_description       block
_exptl_crystal_F_000             600
_exptl_crystal_size_max          0.740
_exptl_crystal_size_mid          0.650
_exptl_crystal_size_min          0.580
_exptl_transmission_factor_max   0.3374
_exptl_transmission_factor_min   0.2986
_refine_diff_density_max         0.342
_refine_diff_density_min         -0.227
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details
;
 Flack x determined using 1671 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.055(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     182
_refine_ls_number_reflns         4126
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0261
_refine_ls_R_factor_gt           0.0251
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0451P)^2^+0.1692P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0706
_refine_ls_wR_factor_ref         0.0713
_reflns_Friedel_coverage         0.718
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.905
_reflns_number_gt                4016
_reflns_number_total             4126
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8qo01222a2.cif
_cod_data_source_block           mo_gd_lxl38_0m
_cod_database_code               1554548
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.821
_shelx_estimated_absorpt_t_max   0.856
_shelx_res_checksum              36287
_shelx_hkl_checksum              27792