The remarkable effect of the 7-substituent in the diastereoselective oxidative rearrangement of indoles: asymmetric synthesis of 3,3-disubstituted oxindoles.
Lachia, Mathilde; Poriel, Cyril; Slawin, Alexandra M Z; Moody, Christopher J; Chemical communications (Cambridge, England)  (2007) 286–288; doi:10.1039/b613716d

data_7101650
_publ_section_title
;
 The remarkable effect of the 7-substituent in the diastereoselective
 oxidative rearrangement of indoles: asymmetric synthesis of
 3,3-disubstituted oxindoles.
;
_journal_issue                   3
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              286
_journal_page_last               288
_journal_paper_doi               10.1039/b613716d
_journal_year                    2007
_chemical_formula_moiety         'C21 H21 Cl N2 O3'
_chemical_formula_sum            'C21 H21 Cl N2 O3'
_chemical_formula_weight         384.85
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.9714(7)
_cell_length_b                   14.1418(11)
_cell_length_c                   15.1487(12)
_cell_measurement_reflns_used    10817
_cell_measurement_temperature    93(2)
_cell_measurement_theta_max      28.22
_cell_measurement_theta_min      1.12
_cell_volume                     1921.9(3)
_computing_cell_refinement       'CrystalClear (Rigaku Corp., 2004)'
_computing_data_collection       'CrystalClear (Rigaku Corp., 2004)'
_computing_data_reduction        'CrystalClear (Rigaku Corp., 2004)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      93(2)
_diffrn_detector_area_resol_mean 0.83
_diffrn_measured_fraction_theta_full 0.958
_diffrn_measured_fraction_theta_max 0.958
_diffrn_measurement_device_type  CCD
_diffrn_measurement_method       dtprofit.ref
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0198
_diffrn_reflns_av_sigmaI/netI    0.0116
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            13683
_diffrn_reflns_theta_full        25.35
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         3.01
_exptl_absorpt_coefficient_mu    0.223
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9016
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.330
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             808
_exptl_crystal_size_max          0.080
_exptl_crystal_size_mid          0.080
_exptl_crystal_size_min          0.080
_refine_diff_density_max         0.163
_refine_diff_density_min         -0.159
_refine_diff_density_rms         0.029
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.04(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     249
_refine_ls_number_reflns         3381
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0224
_refine_ls_R_factor_gt           0.0221
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0314P)^2^+0.4603P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0554
_refine_ls_wR_factor_ref         0.0555
_reflns_number_gt                3349
_reflns_number_total             3381
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b613716d.txt
_cod_data_source_block           8f
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7101650