Catalytic asymmetric construction of bridged bicyclo[<i>m</i>.3.1] rings using an intramolecular Diels-Alder reaction.
Li, Kai; Zhao, Zhengxing; Qin, Wenling; Liu, Yidong; Yan, Hailong; Chemical communications (Cambridge, England) 60 (2024) 9570–9573; doi:10.1039/d4cc02850c

data_7133417
_publ_section_title
;
 Catalytic asymmetric construction of bridged bicyclo[<i>m</i>.3.1] rings
 using an intramolecular Diels-Alder reaction.
;
_journal_issue                   71
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              9570
_journal_page_last               9573
_journal_paper_doi               10.1039/d4cc02850c
_journal_volume                  60
_journal_year                    2024
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C23 H21 Br O Si'
_chemical_formula_sum            'C23 H21 Br O Si'
_chemical_formula_weight         421.40
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2022-01-17
_audit_creation_method
;
Olex2 1.5
(compiled 2021.10.07 svn.r9718050b for OlexSys, GUI svn.r6410)
;
_audit_update_record
;
2022-02-11 deposited with the CCDC.	2024-07-23 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.6383(3)
_cell_length_b                   12.6159(5)
_cell_length_c                   17.6123(7)
_cell_measurement_reflns_used    3019
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.7660
_cell_measurement_theta_min      4.1480
_cell_volume                     1919.39(13)
_computing_cell_refinement       'CrysAlisPro 1.171.41.117a (Rigaku OD, 2021)'
_computing_data_collection       'CrysAlisPro 1.171.41.117a (Rigaku OD, 2021)'
_computing_data_reduction        'CrysAlisPro 1.171.41.117a (Rigaku OD, 2021)'
_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      293(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 16.0892
_diffrn_detector_type            Eos
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.901
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w     -6.00  83.00   1.00    6.95    --   18.58  38.00   0.00   89
  2  \w    -21.00  66.00   1.00    6.95    --   18.58  19.00 -60.00   87
  3  \w    -38.00  -9.00   1.00    6.95    --  -18.78 -77.00   0.00   29
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Single source at offset/far, Eos'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      -0.0094258000
_diffrn_orient_matrix_UB_12      -0.0203312000
_diffrn_orient_matrix_UB_13      -0.0372815000
_diffrn_orient_matrix_UB_21      0.0144679000
_diffrn_orient_matrix_UB_22      -0.0519480000
_diffrn_orient_matrix_UB_23      0.0136463000
_diffrn_orient_matrix_UB_31      -0.0802296000
_diffrn_orient_matrix_UB_32      -0.0069998000
_diffrn_orient_matrix_UB_33      0.0068964000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0294
_diffrn_reflns_av_unetI/netI     0.0573
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.901
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            8032
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.853
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.995
_diffrn_reflns_theta_min         3.431
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    2.213
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.80586
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.41.117a (Rigaku Oxford Diffraction, 2021)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_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    1.458
_exptl_crystal_description       block
_exptl_crystal_F_000             864
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.33
_refine_diff_density_max         0.261
_refine_diff_density_min         -0.413
_refine_diff_density_rms         0.075
_refine_ls_abs_structure_details
;
 Flack x determined using 1203 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.009(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     237
_refine_ls_number_reflns         4349
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0573
_refine_ls_R_factor_gt           0.0398
_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^)+(0.0302P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0728
_refine_ls_wR_factor_ref         0.0805
_reflns_Friedel_coverage         0.671
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.789
_reflns_number_gt                3532
_reflns_number_total             4349
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4cc02850c2.cif
_cod_data_source_block           20220117-zzx-lk-671-c
_cod_depositor_comments
'Adding full bibliography for 7133411--7133420.cif.'
_cod_database_code               7133417
_shelx_shelxl_version_number     2018/3
_chemical_oxdiff_formula         'C H O Br Si'
_shelx_estimated_absorpt_t_max   0.529
_shelx_estimated_absorpt_t_min   0.487
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C13(H13)
2.b Secondary CH2 refined with riding coordinates:
 C12(H12A,H12B), C14(H14A,H14B)
2.c Aromatic/amide H refined with riding coordinates:
 C2(H2), C21(H21), C3(H3), C20(H20), C18(H18), C7(H7), C19(H19), C8(H8),
 C5(H5), C4(H4)
2.d Idealised Me refined as rotating group:
 C15(H15A,H15B,H15C), C16(H16A,H16B,H16C)
;
_shelx_res_checksum              38575
_shelx_hkl_checksum              54592
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 1.326
_oxdiff_exptl_absorpt_empirical_full_min 0.745