Synthesis of spiropyrans <i>via</i> Ru(II)-catalyzed coupling of 3-aryl-2<i>H</i>-benzo[<i>b</i>][1,4]oxazines with benzoquinones.
Wen, Mengke; Zhang, Mengying; Gu, Fan; Geng, Yuehua; Liu, Xiangyang; Wu, Qingnan; Yang, Xifa; Organic & biomolecular chemistry 22 (2024) 998–1009; doi:10.1039/d3ob01971c

data_7159736
_publ_section_title
;
 Synthesis of spiropyrans <i>via</i> Ru(II)-catalyzed coupling of
 3-aryl-2<i>H</i>-benzo[<i>b</i>][1,4]oxazines with benzoquinones.
;
_journal_issue                   5
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              998
_journal_page_last               1009
_journal_paper_doi               10.1039/d3ob01971c
_journal_volume                  22
_journal_year                    2024
_chemical_formula_moiety         'C21 H17 N O4'
_chemical_formula_sum            'C21 H17 N O4'
_chemical_formula_weight         347.36
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     iterative
_audit_block_doi                 10.5517/ccdc.csd.cc2h8hcn
_audit_creation_date             2022-06-14
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2023-10-19 deposited with the CCDC.	2023-12-26 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.8063(9)
_cell_length_b                   14.985(2)
_cell_length_c                   17.161(3)
_cell_measurement_reflns_used    1550
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      22.6900
_cell_measurement_theta_min      4.0210
_cell_volume                     1750.3(4)
_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    'olex2.solve (Bourhis et al., 2015)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.847
_diffrn_measurement_device_type  'Xcalibur, Eos, Gemini'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0572
_diffrn_reflns_av_unetI/netI     0.0924
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.847
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            10405
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.847
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.468
_diffrn_reflns_theta_min         3.495
_exptl_absorpt_coefficient_mu    0.092
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.96568
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.318
_exptl_crystal_description       block
_exptl_crystal_F_000             728
_exptl_crystal_size_max          0.8
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.422
_refine_diff_density_min         -0.300
_refine_diff_density_rms         0.043
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     237
_refine_ls_number_reflns         4126
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.1655
_refine_ls_R_factor_gt           0.0759
_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^)+(0.0735P)^2^+0.0485P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1604
_refine_ls_wR_factor_ref         0.2049
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1969
_reflns_number_total             4126
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3ob01971c2.cif
_cod_data_source_block           exp_11188
_cod_depositor_comments
'Adding full bibliography for 7159736--7159738.cif.'
_cod_original_cell_volume        1750.4(4)
_cod_database_code               7159736
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.973
_shelx_estimated_absorpt_t_min   0.930
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups, All O(H) groups
2.a Riding coordinates:
 N11(H11)
2.b Secondary CH2 refined with riding coordinates:
 C20(H20A,H20B)
2.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C9(H9), C18(H18), C19(H19), C21(H21), C22(H22), C23(H23), C24(H24),
 C25(H25), C26(H26)
2.d Idealised Me refined as rotating group:
 C17(H17A,H17B,H17C)
2.e Idealised tetrahedral OH refined as rotating group:
 O4(H4)
;
_shelx_res_checksum              66488
_olex2_submission_special_instructions 'No special instructions were received'