Titanium-mediated cross-coupling reactions of 1,3-butadiynes with α-iminonitriles to 3-aminopyrroles: observation of an imino aza-Nazarov cyclization
You, Xu; Xie, Xin; Sun, Renhong; Chen, Haoyi; Li, Shi; Liu, Yuanhong; Org. Chem. Front. 1 (2014) 940–; doi:10.1039/C4QO00159A

data_1553014
_publ_section_title
;
 Titanium-mediated cross-coupling reactions of 1,3-butadiynes with
 \a-iminonitriles to 3-aminopyrroles: observation of an imino aza-Nazarov
 cyclization
;
_journal_issue                   8
_journal_name_full               'Org. Chem. Front.'
_journal_page_first              940
_journal_paper_doi               10.1039/C4QO00159A
_journal_volume                  1
_journal_year                    2014
_chemical_formula_sum            'C33 H35 Br N2 O2 S'
_chemical_formula_weight         603.60
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2013
_cell_angle_alpha                90
_cell_angle_beta                 104.443(2)
_cell_angle_gamma                90
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_cell_length_b                   13.6497(11)
_cell_length_c                   16.6352(13)
_cell_measurement_reflns_used    4387
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      48.833
_cell_measurement_theta_min      5.057
_cell_volume                     3074.1(4)
_computing_cell_refinement       'Bruker SMART'
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_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0405
_diffrn_reflns_av_unetI/netI     0.0475
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            18278
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.996
_diffrn_reflns_theta_min         1.956
_exptl_absorpt_coefficient_mu    1.436
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5743
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.304
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             1256
_exptl_crystal_size_max          0.212
_exptl_crystal_size_mid          0.175
_exptl_crystal_size_min          0.123
_refine_diff_density_max         0.760
_refine_diff_density_min         -0.377
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     363
_refine_ls_number_reflns         6044
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0656
_refine_ls_R_factor_gt           0.0447
_refine_ls_shift/su_max          0.027
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0519P)^2^+0.9818P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1059
_refine_ls_wR_factor_ref         0.1164
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4415
_reflns_number_total             6044
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c4qo00159a2.cif
_cod_data_source_block           cd21461
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               1553014
_shelxl_version_number           2013-4
_shelx_res_checksum              97506
_shelx_hkl_checksum              6739