Intramolecular alkene electrophilic bromination initiated ipso-bromocyclization for the synthesis of functionalized azaspirocyclohexadienones.
Yin, Qin; You, Shu-Li; Organic letters 14 (2012) 3526–3529; doi:10.1021/ol301531z

data_1508583
_publ_section_title
;
 Intramolecular alkene electrophilic bromination initiated
 ipso-bromocyclization for the synthesis of functionalized
 azaspirocyclohexadienones.
;
_journal_issue                   13
_journal_name_full               'Organic letters'
_journal_page_first              3526
_journal_page_last               3529
_journal_paper_doi               10.1021/ol301531z
_journal_volume                  14
_journal_year                    2012
_chemical_formula_sum            'C23 H22 Br N O3 S'
_chemical_formula_weight         472.39
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_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     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            8
_cell_length_a                   13.4194(12)
_cell_length_b                   11.6002(10)
_cell_length_c                   26.589(2)
_cell_measurement_reflns_used    6700
_cell_measurement_temperature    133(2)
_cell_measurement_theta_max      30.30
_cell_measurement_theta_min      2.44
_cell_volume                     4139.0(6)
_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-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      133(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0456
_diffrn_reflns_av_sigmaI/netI    0.0300
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            26348
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.53
_exptl_absorpt_coefficient_mu    2.112
_exptl_absorpt_correction_T_max  0.8492
_exptl_absorpt_correction_T_min  0.5699
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.516
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1936
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.08
_refine_diff_density_max         1.038
_refine_diff_density_min         -0.310
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.970
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     263
_refine_ls_number_reflns         4060
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.970
_refine_ls_R_factor_all          0.0427
_refine_ls_R_factor_gt           0.0294
_refine_ls_shift/su_max          0.013
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0463P)^2^+2.6248P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0728
_refine_ls_wR_factor_ref         0.0798
_reflns_number_gt                3270
_reflns_number_total             4060
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             1507889
_cod_data_source_file            ol301531z_si_002.cif
_cod_data_source_block           dm11327
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               1508583