Regioselective dibromination of methyl indole-3-carboxylate and application in the synthesis of 5,6-dibromoindoles.
Parsons, Thomas B.; Ghellamallah, Cédric; Male, Louise; Spencer, Neil; Grainger, Richard S.; Organic & biomolecular chemistry 9 (2011) 5021–5023; doi:10.1039/c1ob05522d

data_7151945
_publ_section_title
;
 Regioselective dibromination of methyl indole-3-carboxylate and
 application in the synthesis of 5,6-dibromoindoles.
;
_journal_issue                   14
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              5021
_journal_page_last               5023
_journal_paper_doi               10.1039/c1ob05522d
_journal_volume                  9
_journal_year                    2011
_chemical_formula_moiety         'C8 H4 Br3 N'
_chemical_formula_sum            'C8 H4 Br3 N'
_chemical_formula_weight         353.85
_chemical_name_common            3,5,6-Tribromo-1H-indole
_chemical_name_systematic
;
3,5,6-Tribromo-1H-indole
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 91.443(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.8688(4)
_cell_length_b                   6.0886(3)
_cell_length_c                   16.8852(8)
_cell_measurement_reflns_used    8290
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      70.721
_cell_measurement_theta_min      4.989
_cell_volume                     911.49(7)
_computing_cell_refinement       'SAINT V6.28A (Bruker, 1997)'
_computing_data_collection       'SMART V5.626 (Bruker, 1997)'
_computing_data_reduction        'SAINT V6.28A (Bruker, 1997)'
_computing_molecular_graphics
;
OLEX2 (Dolomanov, O.V., Bourhis, L.J., Gildea, R.J., Howard, J.A.K,
& Puschmann, H., 2009)
;
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker SMART 6000'
_diffrn_measurement_method       'Omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0396
_diffrn_reflns_av_sigmaI/netI    0.0277
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            8715
_diffrn_reflns_theta_full        66.59
_diffrn_reflns_theta_max         66.59
_diffrn_reflns_theta_min         7.15
_exptl_absorpt_coefficient_mu    15.928
_exptl_absorpt_correction_T_max  0.3622
_exptl_absorpt_correction_T_min  0.0669
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2.07 (Sheldrick, G.M., 2007)'
_exptl_crystal_colour            'Pale Brown'
_exptl_crystal_density_diffrn    2.579
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Shard
_exptl_crystal_F_000             656
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.547
_refine_diff_density_min         -0.744
_refine_diff_density_rms         0.120
_refine_ls_extinction_coef       0.00111(11)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.097
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     110
_refine_ls_number_reflns         1603
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.097
_refine_ls_R_factor_all          0.0254
_refine_ls_R_factor_gt           0.0251
_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^)+(0.0368P)^2^+1.4586P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0663
_refine_ls_wR_factor_ref         0.0666
_reflns_number_gt                1589
_reflns_number_total             1603
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c1ob05522d.txt
_cod_data_source_block           10
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' 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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 2(1)/c'
_cod_database_code               7151945