Trisubstituted alkenes with a single activator as dipolarophiles in a highly diastereo- and enantioselective [3+2] cycloaddition with vinyl epoxides under Pd-catalysis.
Du, Juan; Jiang, Yang-Jie; Suo, Jia-Jia; Wu, Wen-Qiong; Liu, Xiu-Yan; Chen, Di; Ding, Chang-Hua; Wei, Yin; Hou, Xue-Long; Chemical communications (Cambridge, England) 54 (2018) 13143–13146; doi:10.1039/c8cc07996j

data_7122537
_publ_section_title
;
 Trisubstituted alkenes with a single activator as dipolarophiles in a
 highly diastereo- and enantioselective [3+2] cycloaddition with vinyl
 epoxides under Pd-catalysis.
;
_journal_issue                   93
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              13143
_journal_page_last               13146
_journal_paper_doi               10.1039/c8cc07996j
_journal_volume                  54
_journal_year                    2018
_chemical_absolute_configuration ad
_chemical_formula_sum            'C20 H20 Br N O2'
_chemical_formula_weight         386.28
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2018-09-30 deposited with the CCDC.
2018-10-30 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 98.052(4)
_cell_angle_gamma                90
_cell_formula_units_Z            2
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_cell_length_c                   13.318(2)
_cell_measurement_reflns_used    1621
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      43.937
_cell_measurement_theta_min      4.530
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_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
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_computing_structure_solution    'Bruker SHELXTL'
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_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0344
_diffrn_reflns_av_unetI/netI     0.0764
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
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_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            5164
_diffrn_reflns_point_group_measured_fraction_full 0.975
_diffrn_reflns_point_group_measured_fraction_max 0.974
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.496
_diffrn_reflns_theta_min         1.887
_exptl_absorpt_coefficient_mu    2.300
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6170
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.428
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             396
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.100
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; 
 Flack x determined using 938 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons and Flack (2004), Acta Cryst. A60, s61). 
;
_refine_ls_abs_structure_Flack   0.031(10)
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
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_refine_ls_number_reflns         3261
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.976
_refine_ls_R_factor_all          0.0562
_refine_ls_R_factor_gt           0.0436
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0231P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0895
_refine_ls_wR_factor_ref         0.0945
_reflns_Friedel_coverage         0.774
_reflns_Friedel_fraction_full    0.947
_reflns_Friedel_fraction_max     0.944
_reflns_number_gt                2644
_reflns_number_total             3261
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8cc07996j2.cif
_cod_data_source_block           cd17020
_cod_depositor_comments
'Adding full bibliography for 7122537--7122539.cif.'
_cod_original_cell_volume        898.1(3)
_cod_database_code               7122537
_shelx_estimated_absorpt_t_min   0.656
_shelx_estimated_absorpt_t_max   0.894
_shelxl_version_number           2013-4
_shelx_res_checksum              22199
_shelx_hkl_checksum              21830