Bromide-mediated, C2-selective, and oxygenative alkylation of pyridinium salts using alkenes and molecular oxygen.
Qiu, Dong; Liu, Huiyang; Sun, Shuai; Ni, Hongyan; Su, Yijin; Chemical communications (Cambridge, England) 59 (2023) 2807–2810; doi:10.1039/d2cc06138d

data_7131297
_publ_section_title
;
 Bromide-mediated, C2-selective, and oxygenative alkylation of pyridinium
 salts using alkenes and molecular oxygen.
;
_journal_issue                   19
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              2807
_journal_page_last               2810
_journal_paper_doi               10.1039/d2cc06138d
_journal_volume                  59
_journal_year                    2023
_chemical_formula_sum            'C24 H23 N O5'
_chemical_formula_weight         405.43
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2023-01-14 deposited with the CCDC.	2023-02-15 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.713(2)
_cell_length_b                   13.434(4)
_cell_length_c                   19.831(6)
_cell_measurement_reflns_used    3303
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      22.43
_cell_measurement_theta_min      3.05
_cell_volume                     2054.8(10)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART APEX II'
_computing_data_reduction        'Bruker SMART'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX II area detector'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0306
_diffrn_reflns_av_sigmaI/netI    0.0347
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            10225
_diffrn_reflns_theta_full        25.58
_diffrn_reflns_theta_max         25.58
_diffrn_reflns_theta_min         1.83
_exptl_absorpt_coefficient_mu    0.092
_exptl_absorpt_correction_T_max  0.9818
_exptl_absorpt_correction_T_min  0.9729
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.311
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             856
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.195
_refine_diff_density_min         -0.212
_refine_diff_density_rms         0.068
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.6(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.001
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     273
_refine_ls_number_reflns         3690
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.001
_refine_ls_R_factor_all          0.0504
_refine_ls_R_factor_gt           0.0383
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0800P)^2^+0.2936P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1087
_refine_ls_wR_factor_ref         0.1291
_reflns_number_gt                3116
_reflns_number_total             3690
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            d2cc06138d2.cif
_cod_data_source_block           1_CCDC1
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-scan' was
changed to 'multi-scan' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 

 Adding full bibliography for 7131296--7131297.cif.
;
_cod_original_sg_symbol_H-M      Pna2(1)
_cod_database_code               7131297