An expeditious FeCl3-catalyzed cascade 1,4-conjugate addition/annulation/1,5-H shift sequence for modular access of all-pyrano-moiety-substituted chromenes
He, Xinwei; Li, Ruxue; Choy, Pui Ying; Duan, Jiahui; Yin, Zhenzhen; Xu, Keke; Tang, Qiang; Zhong, RongLin; Shang, Yongjia; Kwong, Fuk Yee; Chemical Science  (2022) –; doi:10.1039/D2SC04431E

data_1567898
_publ_section_title
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 An expeditious FeCl3-catalyzed cascade 1,4-conjugate
 addition/annulation/1,5-H shift sequence for modular access of
 all-pyrano-moiety-substituted chromenes
;
_journal_name_full               'Chemical Science'
_journal_paper_doi               10.1039/D2SC04431E
_journal_year                    2022
_chemical_formula_moiety         'C28 H20 F N O2'
_chemical_formula_sum            'C28 H20 F N O2'
_chemical_formula_weight         421.45
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2021-09-30
_audit_creation_method
;
Olex2 1.5
(compiled 2021.08.20 svn.r13c46975 for OlexSys, GUI svn.r6405)
;
_audit_update_record
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2022-07-07 deposited with the CCDC.	2022-11-03 downloaded from the CCDC.
;
_cell_angle_alpha                101.581(6)
_cell_angle_beta                 95.065(7)
_cell_angle_gamma                111.403(6)
_cell_formula_units_Z            2
_cell_length_a                   9.5747(19)
_cell_length_b                   9.6132(18)
_cell_length_c                   12.847(3)
_cell_measurement_reflns_used    2720
_cell_measurement_temperature    300.0
_cell_measurement_theta_max      23.137
_cell_measurement_theta_min      2.958
_cell_volume                     1061.5(4)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_collection       'SAINT v8.37A (Bruker, 2015)'
_computing_data_reduction        'SAINT v8.37A (Bruker, 2015)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      300.00
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.947
_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  0.1059
_diffrn_reflns_av_unetI/netI     0.1007
_diffrn_reflns_Laue_measured_fraction_full 0.976
_diffrn_reflns_Laue_measured_fraction_max 0.947
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            16838
_diffrn_reflns_point_group_measured_fraction_full 0.976
_diffrn_reflns_point_group_measured_fraction_max 0.947
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.668
_diffrn_reflns_theta_min         2.596
_diffrn_source_current           30.0
_diffrn_source_power             1.5
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5420
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0910 before and 0.0714 after correction.
The Ratio of minimum to maximum transmission is 0.7269.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.319
_exptl_crystal_description       block
_exptl_crystal_F_000             440
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.240
_refine_diff_density_min         -0.224
_refine_diff_density_rms         0.059
_refine_ls_extinction_coef       0.025(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   0.995
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     290
_refine_ls_number_reflns         4695
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.995
_refine_ls_R_factor_all          0.1646
_refine_ls_R_factor_gt           0.0686
_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^)+(0.1000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1612
_refine_ls_wR_factor_ref         0.2094
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2196
_reflns_number_total             4695
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2sc04431e2.cif
_cod_data_source_block           20210930a
_cod_database_code               1567898
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.990
_shelx_estimated_absorpt_t_min   0.989
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All N(H) groups
2.a Ternary CH refined with riding coordinates:
 C3(H3)
2.b Aromatic/amide H refined with riding coordinates:
 N1(H1), C5(H5), C6(H6), C7(H7), C8(H8), C11(H11), C12(H12), C13(H13),
 C14(H14), C15(H15), C18(H18), C19(H19), C20(H20), C21(H21), C22(H22), C24(H24),
  C25(H25), C27(H27), C28(H28)
;
_shelx_res_checksum              82455
_shelx_hkl_checksum              48918
_olex2_submission_special_instructions 'No special instructions were received'