Microwave-assisted one-pot synthesis of dibenzo[<i>b</i>,<i>d</i>]oxepines <i>via</i> domino C-C coupling and a cyclo-condensation pathway.
Waghmare, Pradip S.; Satyanarayana, Gedu; Organic & biomolecular chemistry 23 (2025) 6349–6354; doi:10.1039/d5ob00743g

data_7160583
_publ_section_title
;
 Microwave-assisted one-pot synthesis of
 dibenzo[<i>b</i>,<i>d</i>]oxepines <i>via</i> domino C-C coupling and a
 cyclo-condensation pathway.
;
_journal_issue                   26
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              6349
_journal_page_last               6354
_journal_paper_doi               10.1039/d5ob00743g
_journal_volume                  23
_journal_year                    2025
_chemical_formula_moiety         'C21 H14 O2'
_chemical_formula_sum            'C21 H14 O2'
_chemical_formula_weight         298.32
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2021-11-30
_audit_creation_method
;
Olex2 1.3
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6408)
;
_audit_update_record
;
2024-04-24 deposited with the CCDC.	2025-06-05 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   11.0954(7)
_cell_length_b                   15.8197(9)
_cell_length_c                   17.3494(12)
_cell_measurement_reflns_used    5054
_cell_measurement_temperature    273.15
_cell_measurement_theta_max      23.99
_cell_measurement_theta_min      2.53
_cell_volume                     3045.3(3)
_computing_cell_refinement       'SAINT V8.40A (Bruker, 2019)'
_computing_data_reduction        'SAINT V8.40A (Bruker, 2019)'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      273.15
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.998
_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  0.0682
_diffrn_reflns_av_unetI/netI     0.0422
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            27887
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.138
_diffrn_reflns_theta_min         2.531
_diffrn_source_current           1.4
_diffrn_source_power             0.07
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.7455
_exptl_absorpt_correction_T_min  0.6649
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1628 before and 0.0622 after correction.
The Ratio of minimum to maximum transmission is 0.8919.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.301
_exptl_crystal_description       cube
_exptl_crystal_F_000             1248
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.116
_refine_diff_density_min         -0.154
_refine_diff_density_rms         0.033
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     208
_refine_ls_number_reflns         3365
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0898
_refine_ls_R_factor_gt           0.0425
_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^)+(0.0442P)^2^+0.2481P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0933
_refine_ls_wR_factor_ref         0.1111
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2021
_reflns_number_total             3365
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5ob00743g2.cif
_cod_data_source_block           mo_gs_ps_a_o_284_0m
_cod_depositor_comments          'Adding full bibliography for 7160583.cif.'
_cod_database_code               7160583
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.986
_shelx_estimated_absorpt_t_min   0.978
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C12(H12), C11(H11), C17(H17), C18(H18), C19(H19), C14(H14), C13(H13), C3(H3),
 C8(H8), C7(H7), C6(H6), C5(H5), C20(H20), C21(H21)
;
_shelx_res_checksum              68922
_olex2_submission_special_instructions 'No special instructions were received'