DDQ dehydrogenative Diels‒Alder reaction for the synthesis of functionalized spiro[carbazole-1,3′-indolines] and spiro[carbazole-1,5′-pyrimidines]
Zhan, Shao-Cong; Fang, Ren-Jie; Yang, Ren-Yin; Zhao, Ru-Fang; Wang, Yang; Sun, Jing; Yan, Chao-Guo; New Journal of Chemistry 45 (2021) 15423–15428; doi:10.1039/D1NJ02836G

data_7060850
_publ_section_title
;
 DDQ dehydrogenative Diels--Alder reaction for the synthesis of
 functionalized spiro[carbazole-1,3&#x2032;-indolines] and
 spiro[carbazole-1,5&#x2032;-pyrimidines]
;
_journal_issue                   34
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              15423
_journal_page_last               15428
_journal_paper_doi               10.1039/D1NJ02836G
_journal_volume                  45
_journal_year                    2021
_chemical_formula_moiety         'C25 H20 N2 O3'
_chemical_formula_sum            'C25 H20 N2 O3'
_chemical_formula_weight         396.43
_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   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2021-04-14 deposited with the CCDC.	2021-07-19 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 92.686(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   17.8914(19)
_cell_length_b                   5.5286(6)
_cell_length_c                   20.497(2)
_cell_measurement_reflns_used    3543
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      21.08
_cell_measurement_theta_min      2.25
_cell_volume                     2025.2(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_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  0.1054
_diffrn_reflns_av_unetI/netI     0.1353
_diffrn_reflns_Laue_measured_fraction_full 0.987
_diffrn_reflns_Laue_measured_fraction_max 0.987
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            20401
_diffrn_reflns_point_group_measured_fraction_full 0.987
_diffrn_reflns_point_group_measured_fraction_max 0.987
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.000
_diffrn_reflns_theta_min         2.339
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6594
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.300
_exptl_crystal_description       block
_exptl_crystal_F_000             832
_exptl_crystal_size_max          0.280
_exptl_crystal_size_mid          0.220
_exptl_crystal_size_min          0.180
_refine_diff_density_max         0.193
_refine_diff_density_min         -0.164
_refine_diff_density_rms         0.040
_refine_ls_extinction_coef       0.013(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     274
_refine_ls_number_reflns         3920
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.1938
_refine_ls_R_factor_gt           0.0672
_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^)+(0.0541P)^2^+0.7016P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1172
_refine_ls_wR_factor_ref         0.1544
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1734
_reflns_number_total             3920
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1nj02836g2.cif
_cod_data_source_block           A2
_cod_depositor_comments
'Adding full bibliography for 7060849--7060852.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7060850
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.976
_shelx_estimated_absorpt_t_max   0.985
_shelx_res_checksum              34962