Highly efficient construction of an oxa-[3.2.1]octane-embedded 5–7–6 tricyclic carbon skeleton and ring-opening of the bridged ring via C–O bond cleavage
Cui, Yi; Lv, Jiayuan; Song, Tianhang; Ren, Jun; Wang, Zhongwen; RSC Advances 12 (2022) 9519–9523; doi:10.1039/D2RA01315K

data_7244671
_publ_section_title
;
 Highly efficient construction of an oxa-[3.2.1]octane-embedded 5--7--6
 tricyclic carbon skeleton and ring-opening of the bridged ring via C--O
 bond cleavage
;
_journal_issue                   16
_journal_name_full               'RSC Advances'
_journal_page_first              9519
_journal_page_last               9523
_journal_paper_doi               10.1039/D2RA01315K
_journal_volume                  12
_journal_year                    2022
_chemical_formula_moiety         'C19 H22 O6'
_chemical_formula_sum            'C19 H22 O6'
_chemical_formula_weight         346.36
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_block_doi                 10.5517/ccdc.csd.cc28vc8s
_audit_creation_date             2021-08-04
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2021-09-20 deposited with the CCDC.	2022-03-21 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 98.219(4)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   27.2898(10)
_cell_length_b                   7.6810(3)
_cell_length_c                   16.4376(6)
_cell_measurement_reflns_used    9427
_cell_measurement_temperature    113.15
_cell_measurement_theta_max      33.6190
_cell_measurement_theta_min      2.7050
_cell_volume                     3410.1(2)
_computing_cell_refinement       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.46 (Rigaku OD, 2015)'
_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    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      113.15
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.939
_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   -120.00  60.00   1.00    1.00    --  -30.00  45.00   0.00  180
  2  \w   -120.00  60.00   1.00    1.00    --  -30.00  45.00  90.00  180
  3  \w   -120.00  60.00   1.00    1.00    --  -30.00  45.00 180.00  180
;
_diffrn_measurement_device       'abstract diffractometer'
_diffrn_measurement_device_type  'Rigaku Saturn 70 CCD'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      0.0261152000
_diffrn_orient_matrix_UB_12      -0.0090072000
_diffrn_orient_matrix_UB_13      0.0081468000
_diffrn_orient_matrix_UB_21      -0.0010654000
_diffrn_orient_matrix_UB_22      0.0052506000
_diffrn_orient_matrix_UB_23      0.0427775000
_diffrn_orient_matrix_UB_31      -0.0026142000
_diffrn_orient_matrix_UB_32      -0.0917707000
_diffrn_orient_matrix_UB_33      0.0015921000
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0517
_diffrn_reflns_av_unetI/netI     0.0463
_diffrn_reflns_Laue_measured_fraction_full 0.989
_diffrn_reflns_Laue_measured_fraction_max 0.939
_diffrn_reflns_limit_h_max       41
_diffrn_reflns_limit_h_min       -40
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            24108
_diffrn_reflns_point_group_measured_fraction_full 0.989
_diffrn_reflns_point_group_measured_fraction_max 0.939
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         33.619
_diffrn_reflns_theta_min         2.732
_diffrn_source                   'rotating anode'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.100
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.56680
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'CrysAlisPro 1.171.38.46 (Rigaku Oxford Diffraction, 2015)'
_exptl_crystal_density_diffrn    1.349
_exptl_crystal_description       block
_exptl_crystal_F_000             1472
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.399
_refine_diff_density_min         -0.230
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     229
_refine_ls_number_reflns         6323
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0680
_refine_ls_R_factor_gt           0.0497
_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^)+(0.0555P)^2^+1.8844P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1145
_refine_ls_wR_factor_ref         0.1273
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4930
_reflns_number_total             6323
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2ra01315k2.cif
_cod_data_source_block           r20210802b
_cod_database_code               7244671
_shelx_shelxl_version_number     2018/3
_chemical_oxdiff_formula         'C11 H10 N O'
_shelx_estimated_absorpt_t_max   0.980
_shelx_estimated_absorpt_t_min   0.976
_reflns_odcompleteness_completeness 99.05
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     26.32
_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:
 C8(H8), C15(H15)
2.b Secondary CH2 refined with riding coordinates:
 C9(H9A,H9B), C10(H10A,H10B), C11(H11A,H11B), C13(H13A,H13B)
2.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C4(H4), C5(H5)
2.d Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C17(H17A,H17B,H17C), C19(H19A,H19B,H19C)
;
_shelx_res_checksum              62957
_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
- Detector area scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 1.713
_oxdiff_exptl_absorpt_empirical_full_min 0.772