Sequential Visible-Light Photoactivation and Palladium Catalysis Enabling Enantioselective [4+2] Cycloadditions.
Li, Miao-Miao; Wei, Yi; Liu, Jie; Chen, Hong-Wei; Lu, Liang-Qiu; Xiao, Wen-Jing; Journal of the American Chemical Society  (2017) –; doi:10.1021/jacs.7b08310

data_4126577
_publ_section_title
;
 Sequential Visible-Light Photoactivation and Palladium Catalysis Enabling
 Enantioselective [4+2] Cycloadditions.
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_paper_doi               10.1021/jacs.7b08310
_journal_year                    2017
_chemical_formula_sum            'C28 H29 N O2 S'
_chemical_formula_weight         443.58
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.3068(2)
_cell_length_b                   14.5755(3)
_cell_length_c                   15.4152(3)
_cell_measurement_reflns_used    9993
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      70.94
_cell_measurement_theta_min      7.17
_cell_volume                     2315.78(8)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.977
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0291
_diffrn_reflns_av_unetI/netI     0.0322
_diffrn_reflns_Laue_measured_fraction_full 0.977
_diffrn_reflns_Laue_measured_fraction_max 0.977
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            14435
_diffrn_reflns_point_group_measured_fraction_full 0.951
_diffrn_reflns_point_group_measured_fraction_max 0.951
_diffrn_reflns_theta_full        67.480
_diffrn_reflns_theta_max         67.480
_diffrn_reflns_theta_min         7.174
_exptl_absorpt_coefficient_mu    1.431
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.272
_exptl_crystal_description       block
_exptl_crystal_F_000             944
_exptl_crystal_size_max          0.120
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.370
_refine_diff_density_min         -0.271
_refine_diff_density_rms         0.069
_refine_ls_abs_structure_details
; 
 Flack x determined using 1626 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259). 
;
_refine_ls_abs_structure_Flack   0.056(4)
_refine_ls_extinction_coef       0.0094(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.191
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     292
_refine_ls_number_reflns         3973
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.191
_refine_ls_R_factor_all          0.0281
_refine_ls_R_factor_gt           0.0272
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0545P)^2^+0.3174P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0759
_refine_ls_wR_factor_ref         0.0878
_reflns_Friedel_coverage         0.709
_reflns_Friedel_fraction_full    0.916
_reflns_Friedel_fraction_max     0.916
_reflns_number_gt                3959
_reflns_number_total             3973
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja7b08310_si_003.cif
_cod_data_source_block           cu_170515d_0m
_cod_database_code               4126577
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.847
_shelx_estimated_absorpt_t_max   0.870
_shelx_res_checksum              78065
_shelx_hkl_checksum              59595