Organocatalytic regioselective, diastereoselective, and enantioselective annulation of cyclic 1-azadienes with γ-nitro ketones via 3,4-cyclization
Yu, Lu; Cheng, Yuyu; Qi, Fei; Li, Rou; Li, Pengfei; Organic Chemistry Frontiers 4 (2017) 1336–; doi:10.1039/C6QO00832A

data_1553632
_publ_section_title
;
 Organocatalytic regioselective, diastereoselective, and enantioselective
 annulation of cyclic 1-azadienes with \g-nitro ketones via
 3,4-cyclization
;
_journal_issue                   7
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              1336
_journal_paper_doi               10.1039/C6QO00832A
_journal_volume                  4
_journal_year                    2017
_chemical_formula_sum            'C20 H19 Br N2 O5 S'
_chemical_formula_weight         479.34
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2016-12-01 deposited with the CCDC.
2017-04-05 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.8208(3)
_cell_length_b                   12.8570(4)
_cell_length_c                   18.1141(5)
_cell_measurement_reflns_used    5745
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      26.92
_cell_measurement_theta_min      2.25
_cell_volume                     2054.30(11)
_computing_cell_refinement       'Bruker APEXII'
_computing_data_collection       'Bruker APEXII'
_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      296(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker APEXII 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  0.1516
_diffrn_reflns_av_sigmaI/netI    0.1589
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            24921
_diffrn_reflns_theta_full        27.39
_diffrn_reflns_theta_max         27.39
_diffrn_reflns_theta_min         1.94
_exptl_absorpt_coefficient_mu    2.137
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5966
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   'SAINT ver. 7.34; Bruker SADABS'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.550
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             976
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.32
_refine_diff_density_max         0.275
_refine_diff_density_min         -0.347
_refine_diff_density_rms         0.060
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.030(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.994
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         4619
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.994
_refine_ls_R_factor_all          0.1259
_refine_ls_R_factor_gt           0.0514
_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^)+(0.0067P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0608
_refine_ls_wR_factor_ref         0.0689
_reflns_number_gt                2601
_reflns_number_total             4619
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6qo00832a2.cif
_cod_data_source_block           lpf4
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/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 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               1553632