Pd(II)-Catalyzed Aerobic Intermolecular 1,2-Diamination of Conjugated Dienes: A Regio- and Chemoselective [4 + 2] Annulation for the Synthesis of Tetrahydroquinoxalines.
Wu, Zhengxing; Wen, Ke; Zhang, Jingang; Zhang, Wanbin; Organic letters 19 (2017) 2813–2816; doi:10.1021/acs.orglett.7b00919

data_1546235
_publ_section_title
;
 Pd(II)-Catalyzed Aerobic Intermolecular 1,2-Diamination of Conjugated
 Dienes: A Regio- and Chemoselective [4 + 2] Annulation for the Synthesis
 of Tetrahydroquinoxalines.
;
_journal_issue                   11
_journal_name_full               'Organic letters'
_journal_page_first              2813
_journal_page_last               2816
_journal_paper_doi               10.1021/acs.orglett.7b00919
_journal_volume                  19
_journal_year                    2017
_chemical_formula_moiety         'C26 H25 N3 O6 S2'
_chemical_formula_sum            'C26 H25 N3 O6 S2'
_chemical_formula_weight         539.61
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_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                 98.702(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.9761(10)
_cell_length_b                   12.0471(8)
_cell_length_c                   17.4180(13)
_cell_measurement_reflns_used    3132
_cell_measurement_temperature    170(2)
_cell_measurement_theta_max      29.5533
_cell_measurement_theta_min      3.1230
_cell_volume                     2484.1(3)
_computing_cell_refinement       'CrysAlis PRO (Agilent Technologies, 2011)'
_computing_data_collection       'CrysAlis PRO'
_computing_data_reduction        'CrysAlis PRO'
_computing_molecular_graphics    'OLEX2 (Dolomanov et al., 2009)'
_computing_publication_material  OLEX2
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      170(2)
_diffrn_detector_area_resol_mean 10.3592
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Xcalibur, Atlas, Gemini ultra'
_diffrn_measurement_method       '\w 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  0.0304
_diffrn_reflns_av_sigmaI/netI    0.0457
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            9509
_diffrn_reflns_theta_full        25.35
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         3.38
_exptl_absorpt_coefficient_mu    0.263
_exptl_absorpt_correction_T_max  0.9666
_exptl_absorpt_correction_T_min  0.9300
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis PRO (Agilent Technologies, 2011) 
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.443
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1128
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.312
_refine_diff_density_min         -0.348
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     336
_refine_ls_number_reflns         4551
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0578
_refine_ls_R_factor_gt           0.0393
_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^)+(0.0336P)^2^+1.0539P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0836
_refine_ls_wR_factor_ref         0.0936
_reflns_number_gt                3575
_reflns_number_total             4551
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol7b00919_si_003.cif
_cod_data_source_block           140305_wzx_6_no2
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               1546235