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_7151943
_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         'C15 H15 Br2 N O4'
_chemical_formula_sum            'C15 H15 Br2 N O4'
_chemical_formula_weight         433.10
_chemical_name_common
'1-tert-Butyl-3-methyl 5,6-dibromo-1H-indole-1,3-dicarboxylate'
_chemical_name_systematic
;
1-tert-Butyl-3-methyl 5,6-dibromo-1H-indole-1,3-dicarboxylate
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                96.062(2)
_cell_angle_beta                 94.194(2)
_cell_angle_gamma                106.037(2)
_cell_formula_units_Z            2
_cell_length_a                   7.0596(3)
_cell_length_b                   10.6930(4)
_cell_length_c                   11.4729(4)
_cell_measurement_reflns_used    15929
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     822.95(6)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_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
;
SIR92, (Altomare, Cascarano, Giacovazzo, Guagliardi, Burla, Polidori &
Camalli, 1994)
;
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type
'Bruker-Nonius Roper CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0561
_diffrn_reflns_av_sigmaI/netI    0.0546
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            17723
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.11
_exptl_absorpt_coefficient_mu    4.941
_exptl_absorpt_correction_T_max  0.9076
_exptl_absorpt_correction_T_min  0.3835
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2007/2 (Sheldrick, G.M., 2007)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.748
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             428
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.466
_refine_diff_density_min         -0.546
_refine_diff_density_rms         0.125
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     203
_refine_ls_number_reflns         3762
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0585
_refine_ls_R_factor_gt           0.0387
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0169P)^2^+1.0488P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0701
_refine_ls_wR_factor_ref         0.0763
_reflns_number_gt                2966
_reflns_number_total             3762
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c1ob05522d.txt
_cod_data_source_block           3
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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_cell_volume        822.95(5)
_cod_database_code               7151943