Copper-catalyzed radical cascades of para-quinone methides with AIBN and H2O via α-cyanoalkylation by C–C bond cleavage: New access to benzofuran-2(3H)-ones
Yu, Jian; Sheng, Hui-Xiang; Wang, Shuo-Wen; Xu, Zhen-Hua; Tang, Shi; Chen, Shi-Lu; Chemical Communications  (2019) –; doi:10.1039/C9CC00294D

data_7123170
_publ_section_title
;
 Copper-catalyzed radical cascades of para-quinone methides with AIBN and
 H2O via \a-cyanoalkylation by C--C bond cleavage: New access to
 benzofuran-2(3H)-ones
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/C9CC00294D
_journal_year                    2019
_chemical_formula_moiety         'C25 H29 N O2'
_chemical_formula_sum            'C25 H29 N O2'
_chemical_formula_weight         375.49
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2018-06-30
_audit_creation_method
;
Olex2 1.2
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_audit_update_record
;
2018-12-29 deposited with the CCDC.    2019-03-18 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 95.923(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.3455(8)
_cell_length_b                   10.3283(7)
_cell_length_c                   16.3127(10)
_cell_measurement_reflns_used    6255
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      27.47
_cell_measurement_theta_min      2.34
_cell_volume                     2068.9(2)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      153.15
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0504
_diffrn_reflns_av_unetI/netI     0.0570
_diffrn_reflns_Laue_measured_fraction_full 0.983
_diffrn_reflns_Laue_measured_fraction_max 0.982
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            16387
_diffrn_reflns_point_group_measured_fraction_full 0.983
_diffrn_reflns_point_group_measured_fraction_max 0.982
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.535
_diffrn_reflns_theta_min         2.511
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6378
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction. wR2(int) was 0.1229 before and 0.0661 after correction. The Ratio of minimum to maximum transmission is 0.8554. The \l/2 correction factor is 0.00150.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.206
_exptl_crystal_description       block
_exptl_crystal_F_000             808
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.307
_refine_diff_density_min         -0.214
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     260
_refine_ls_number_reflns         4680
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.0750
_refine_ls_R_factor_gt           0.0516
_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^)+(0.0481P)^2^+0.7599P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1184
_refine_ls_wR_factor_ref         0.1286
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3453
_reflns_number_total             4680
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9cc00294d2.cif
_cod_data_source_block           a
_cod_database_code               7123170
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.985
_shelx_estimated_absorpt_t_min   0.985
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C7(H7)
2.b Aromatic/amide H refined with riding coordinates:
 C13(H13), C17(H17), C5(H5), C3(H3), C6(H6), C1(H1), C2(H2)
2.c Idealised Me refined as rotating group:
 C10(H10A,H10B,H10C), C24(H24A,H24B,H24C), C11(H11A,H11B,H11C), C20(H20A,H20B,
 H20C), C21(H21A,H21B,H21C), C25(H25A,H25B,H25C), C23(H23A,H23B,H23C)
;
_shelx_res_checksum              73327
_olex2_submission_special_instructions 'No special instructions were received'