Iron<sup>III</sup>-catalyzed asymmetric inverse-electron-demand hetero-Diels-Alder reaction of dioxopyrrolidines with simple olefins.
Zhan, Tangyu; Zhou, Liang; Zhou, Yuqiao; Yang, Bingqian; Feng, Xiaoming; Liu, Xiaohua; Chemical science 15 (2024) 4797–4803; doi:10.1039/d4sc00078a

data_1571074
_publ_section_title
;
 Iron<sup>III</sup>-catalyzed asymmetric inverse-electron-demand
 hetero-Diels-Alder reaction of dioxopyrrolidines with simple olefins.
;
_journal_issue                   13
_journal_name_full               'Chemical science'
_journal_page_first              4797
_journal_page_last               4803
_journal_paper_doi               10.1039/d4sc00078a
_journal_volume                  15
_journal_year                    2024
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C26 H23 N O4'
_chemical_formula_sum            'C26 H23 N O4'
_chemical_formula_weight         413.45
_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'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2019/1
_audit_update_record
;
2023-12-23 deposited with the CCDC.	2024-02-28 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.7506(2)
_cell_length_b                   9.9990(2)
_cell_length_c                   25.0270(6)
_cell_measurement_reflns_used    9961
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      79.14
_cell_measurement_theta_min      3.53
_cell_volume                     2189.79(8)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX3'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2019/1 (Sheldrick, 2019)'
_computing_structure_solution    'SHELXT (Sheldrick 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Bruker D8 Venture Photon II'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0372
_diffrn_reflns_av_unetI/netI     0.0173
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.987
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            37727
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.982
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         79.473
_diffrn_reflns_theta_min         3.532
_exptl_absorpt_coefficient_mu    0.683
_exptl_absorpt_correction_T_max  0.9356
_exptl_absorpt_correction_T_min  0.6124
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'SADABS (Krause et al., 2015)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.254
_exptl_crystal_description       rod
_exptl_crystal_F_000             872
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: DCM, Hexane'
_exptl_crystal_size_max          0.866
_exptl_crystal_size_mid          0.185
_exptl_crystal_size_min          0.167
_refine_diff_density_max         0.303
_refine_diff_density_min         -0.226
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_refine_ls_abs_structure_details
; 
 Flack x determined using 1929 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259). 
;
_refine_ls_abs_structure_Flack   0.01(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         4660
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0370
_refine_ls_R_factor_gt           0.0364
_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^)+(0.0530P)^2^+0.5015P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0951
_refine_ls_wR_factor_ref         0.0958
_reflns_Friedel_coverage         0.739
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.974
_reflns_number_gt                4580
_reflns_number_total             4660
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4sc00078a2.cif
_cod_data_source_block           lii028
_cod_depositor_comments
'Adding full bibliography for 1571072--1571074.cif.'
_cod_database_code               1571074
_shelx_shelxl_version_number     2019/1
_shelx_estimated_absorpt_t_min   0.589
_shelx_estimated_absorpt_t_max   0.894
_shelx_res_checksum              70386