Kinetic resolution of 2,2-disubstituted-1,3-diketones via carbene catalysis
Xu, Weici; Li, Yuanzhen; Liu, Rui; Yang, Shuang; Liu, Jian; Fang, Xinqiang; Organic Chemistry Frontiers 6 (2019) 290–; doi:10.1039/C8QO01137K

data_1554514
_publ_section_title
;
 Kinetic resolution of 2,2-disubstituted-1,3-diketones via carbene
 catalysis
;
_journal_issue                   3
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              290
_journal_paper_doi               10.1039/C8QO01137K
_journal_volume                  6
_journal_year                    2019
_chemical_formula_sum            'C17 H20 O3'
_chemical_formula_weight         272.33
_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
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2017-11-07 deposited with the CCDC.
2018-11-05 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.4344(2)
_cell_length_b                   11.4942(2)
_cell_length_c                   11.5277(2)
_cell_measurement_reflns_used    4762
_cell_measurement_temperature    288.3(1)
_cell_measurement_theta_max      73.2590
_cell_measurement_theta_min      5.3980
_cell_volume                     1382.58(4)
_computing_cell_refinement       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      288.3(1)
_diffrn_detector_area_resol_mean 10.5594
_diffrn_measured_fraction_theta_full 0.959
_diffrn_measured_fraction_theta_max 0.938
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0227
_diffrn_reflns_av_unetI/netI     0.0279
_diffrn_reflns_Laue_measured_fraction_full 0.959
_diffrn_reflns_Laue_measured_fraction_max 0.938
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            6802
_diffrn_reflns_point_group_measured_fraction_full 0.936
_diffrn_reflns_point_group_measured_fraction_max 0.903
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         73.347
_diffrn_reflns_theta_min         5.435
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    0.710
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.51490
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.41 (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.308
_exptl_crystal_description       prism
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.300
_exptl_crystal_size_mid          0.250
_exptl_crystal_size_min          0.250
_refine_diff_density_max         0.248
_refine_diff_density_min         -0.179
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details
;
 Flack x determined using 949 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.03(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     184
_refine_ls_number_reflns         2513
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0333
_refine_ls_R_factor_gt           0.0312
_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^)+(0.0475P)^2^+0.1468P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0783
_refine_ls_wR_factor_ref         0.0804
_reflns_Friedel_coverage         0.666
_reflns_Friedel_fraction_full    0.903
_reflns_Friedel_fraction_max     0.856
_reflns_number_gt                2419
_reflns_number_total             2513
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8qo01137k2.cif
_cod_data_source_block           Compound-1
_cod_database_code               1554514
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.815
_shelx_estimated_absorpt_t_max   0.843
_shelx_res_checksum              66174
_shelx_hkl_checksum              80628