Preparation of chiral 3-oxocycloalkanecarbonitrile and its derivatives by crystallization-induced diastereomer transformation of ketals with chiral 1,2-diphenylethane-1,2-diol
Yamashita, Yohei; Maki, Daisuke; Sakurai, Shiho; Fuse, Takumi; Matsumoto, Shoji; Akazome, Motohiro; RSC Advances 8 (2018) 32601–; doi:10.1039/C8RA06611F

data_7231544
_publ_section_title
;
 Preparation of chiral 3-oxocycloalkanecarbonitrile and its derivatives by
 crystallization-induced diastereomer transformation of ketals with chiral
 1,2-diphenylethane-1,2-diol
;
_journal_issue                   57
_journal_name_full               'RSC Advances'
_journal_page_first              32601
_journal_paper_doi               10.1039/C8RA06611F
_journal_volume                  8
_journal_year                    2018
_chemical_absolute_configuration syn
_chemical_formula_sum            'C20 H21 N O3'
_chemical_formula_weight         323.38
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   mixed
_audit_update_record
;
2018-08-24 deposited with the CCDC.
2018-09-10 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 92.594(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   6.2977(2)
_cell_length_b                   7.4401(2)
_cell_length_c                   18.2018(6)
_cell_measurement_reflns_used    6313
_cell_measurement_temperature    173
_cell_measurement_theta_max      67.8741
_cell_measurement_theta_min      4.8642
_cell_volume                     851.98(5)
_computing_cell_refinement       'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_data_collection       'APEX2 (Bruker AXS, 2006)'
_computing_data_reduction        'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_molecular_graphics    'XSHEL (Bruker AXS,2002)'
_computing_publication_material  'XCIF (Bruker AXS, 2001)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker APEXII Ultra CCD area detector'
_diffrn_measurement_method       'Phi and Omega scans'
_diffrn_radiation_monochromator  'Bruker Helios multilayer confocal mirror'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0192
_diffrn_reflns_av_unetI/netI     0.0181
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            9149
_diffrn_reflns_theta_full        68.227
_diffrn_reflns_theta_max         68.227
_diffrn_reflns_theta_min         2.430
_diffrn_source                   'Bruker TXS fine-focus rotating anode'
_exptl_absorpt_coefficient_mu    0.680
_exptl_absorpt_correction_T_max  0.97
_exptl_absorpt_correction_T_min  0.88
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (Sheldrick 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.261
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             344
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.050
_refine_diff_density_max         0.216
_refine_diff_density_min         -0.158
_refine_ls_abs_structure_details
;
Flack x determined using 1085 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.15(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.073
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     225
_refine_ls_number_reflns         2815
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.073
_refine_ls_R_factor_all          0.0317
_refine_ls_R_factor_gt           0.0304
_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^)+(0.0414P)^2^+0.1448P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0795
_refine_ls_wR_factor_ref         0.0805
_reflns_number_gt                2709
_reflns_number_total             2815
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8ra06611f2.cif
_cod_data_source_block           (R)-3a
_cod_database_code               7231544