Dynamic Kinetic Resolution of Phthalides via Asymmetric Transfer Hydrogenation: A Strategy Constructs 1,3-Distereocentered 3-(2-Hydroxy-2-arylethyl)isobenzofuran-1(3H)-one.
Cheng, Tanyu; Ye, Qunqun; Zhao, Qiankun; Liu, Guohua; Organic letters 17 (2015) 4972–4975; doi:10.1021/acs.orglett.5b02394

data_1555308
_publ_section_title
;
 Dynamic Kinetic Resolution of Phthalides via Asymmetric Transfer
 Hydrogenation: A Strategy Constructs 1,3-Distereocentered
 3-(2-Hydroxy-2-arylethyl)isobenzofuran-1(3H)-one.
;
_journal_issue                   20
_journal_name_full               'Organic letters'
_journal_page_first              4972
_journal_page_last               4975
_journal_paper_doi               10.1021/acs.orglett.5b02394
_journal_volume                  17
_journal_year                    2015
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C17 H13 N O3'
_chemical_formula_sum            'C17 H13 N O3'
_chemical_formula_weight         279.28
_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     direct
_audit_creation_date             2014-10-24
_audit_creation_method
;
Olex2 1.2
(compiled 2014.07.22 svn.r2960 for OlexSys, GUI svn.r4862)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.13860(10)
_cell_length_b                   8.00090(10)
_cell_length_c                   23.6032(4)
_cell_measurement_reflns_used    7871
_cell_measurement_temperature    130
_cell_measurement_theta_max      68.69
_cell_measurement_theta_min      3.75
_cell_volume                     1348.10(3)
_computing_cell_refinement       'SAINT v7.68A (Bruker, 2009)'
_computing_data_reduction        'SAINT v7.68A (Bruker, 2009)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      130
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0452
_diffrn_reflns_av_unetI/netI     0.0369
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.979
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            9014
_diffrn_reflns_point_group_measured_fraction_full 0.977
_diffrn_reflns_point_group_measured_fraction_max 0.956
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         69.802
_diffrn_reflns_theta_min         3.745
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.778
_exptl_absorpt_correction_T_max  0.7533
_exptl_absorpt_correction_T_min  0.5426
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
wR2(int) was 0.1502 before and 0.0633 after correction.
The Ratio of minimum to maximum transmission is 0.7203.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.376
_exptl_crystal_description       block
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.328
_refine_diff_density_min         -0.206
_refine_diff_density_rms         0.046
_refine_ls_abs_structure_details
;
 Flack x determined using 942 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.07(8)
_refine_ls_extinction_coef       0.0166(12)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.086
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     192
_refine_ls_number_reflns         2424
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.086
_refine_ls_R_factor_all          0.0322
_refine_ls_R_factor_gt           0.0320
_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^)+(0.0343P)^2^+0.3364P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0820
_refine_ls_wR_factor_ref         0.0822
_reflns_Friedel_coverage         0.655
_reflns_Friedel_fraction_full    0.950
_reflns_Friedel_fraction_max     0.922
_reflns_number_gt                2408
_reflns_number_total             2424
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol5b02394_si_002.cif
_cod_data_source_block           cu_dm14608_0m
_cod_database_code               1555308
_shelxl_version_number           2014-3
_shelx_estimated_absorpt_t_max   0.912
_shelx_estimated_absorpt_t_min   0.829
_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 O(H) groups
2.a Ternary CH refined with riding coordinates:
 C8(H8), C10(H10)
2.b Secondary CH2 refined with riding coordinates:
 C9(H9A,H9B)
2.c Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3A), C4(H4), C5(H5), C12(H12), C13(H13), C15(H15), C16(H16)
2.d Idealised tetrahedral OH refined as rotating group:
 O3(H3)
;
_shelx_res_checksum              99760
_shelx_hkl_checksum              85412
_olex2_submission_special_instructions 'No special instructions were received'