Effect of Bronsted Acids and Bases, and Lewis Acid (Sn(2+)) on the Regiochemistry of the Reaction of Amines with Trifluoromethyl-β-diketones: Reaction of 3-Aminopyrrole to Selectively Produce Regioisomeric 1H-Pyrrolo[3,2-b]pyridines.
De Rosa, Michael; Arnold, David; Hartline, Douglas; Truong, Linda; Verner, Roman; Wang, Tianwei; Westin, Christian; The Journal of organic chemistry 80 (2015) 12288–12299; doi:10.1021/acs.joc.5b02192

data_4036492
_publ_section_title
;
 Effect of Bronsted Acids and Bases, and Lewis Acid (Sn(2+)) on the
 Regiochemistry of the Reaction of Amines with
 Trifluoromethyl-\b-diketones: Reaction of 3-Aminopyrrole to Selectively
 Produce Regioisomeric 1H-Pyrrolo[3,2-b]pyridines.
;
_journal_issue                   24
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              12288
_journal_page_last               12299
_journal_paper_doi               10.1021/acs.joc.5b02192
_journal_volume                  80
_journal_year                    2015
_chemical_formula_moiety         'C14 H9 F3 N2'
_chemical_formula_sum            'C14 H9 F3 N2'
_chemical_formula_weight         262.23
_chemical_melting_point          386.6(5)
_chemical_name_common
5-Methyl-7-(trifluoromethyl)-1H-pyrrolo[3,2-b]pyridine
_chemical_name_systematic        5B
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/n 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                 107.730(11)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   11.813(9)
_cell_length_b                   11.294(9)
_cell_length_c                   18.965(14)
_cell_measurement_reflns_used    2160
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      28.549
_cell_measurement_theta_min      2.410
_cell_volume                     2410(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      298(2)
_diffrn_measured_fraction_theta_full 0.954
_diffrn_measured_fraction_theta_max 0.954
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0732
_diffrn_reflns_av_sigmaI/netI    0.1283
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            15348
_diffrn_reflns_theta_full        28.54
_diffrn_reflns_theta_max         28.54
_diffrn_reflns_theta_min         2.13
_exptl_absorpt_coefficient_mu    0.120
_exptl_absorpt_correction_T_max  0.9929
_exptl_absorpt_correction_T_min  0.9673
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.446
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1072
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.422
_refine_diff_density_min         -0.353
_refine_diff_density_rms         0.098
_refine_ls_extinction_coef       0.018(3)
_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   1.096
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     352
_refine_ls_number_reflns         5843
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.096
_refine_ls_R_factor_all          0.2217
_refine_ls_R_factor_gt           0.1161
_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^)+(0.1378P)^2^+3.4014P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3044
_refine_ls_wR_factor_ref         0.3475
_reflns_number_gt                2574
_reflns_number_total             5843
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo5b02192_si_002.cif
_cod_data_source_block           mxd17s
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_chemical_melting_point' value '113.0-113.9 oC' was
changed to '386.6(5)' -- it was converted from degrees Celsius(C) to
Kelvins(K), the average value was taken and precision was estimated.

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 

2020-07-21
Z value and formula fixed to values more according to usual
chemical conventions.                 miguel
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_original_formula_moiety     'C28 H18 F6 N4'
_cod_original_formula_sum        'C28 H18 F6 N4'
_cod_original_formula_units_Z    4
_cod_original_formula_weight     524.46
_cod_database_code               4036492