Applications of chiral naphthyloxycyclohexanols in deracemization of α-substituted carboxylic acids by dynamic thermodynamic resolution.
Khanvilkar, Aditya N.; Samanta, Sudeep G.; Bedekar, Ashutosh V.; Organic & biomolecular chemistry 17 (2019) 2670–2683; doi:10.1039/c8ob02896f

data_7156684
_publ_section_title
;
 Applications of chiral naphthyloxycyclohexanols in deracemization of
 \a-substituted carboxylic acids by dynamic thermodynamic resolution.
;
_journal_issue                   10
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2670
_journal_page_last               2683
_journal_paper_doi               10.1039/c8ob02896f
_journal_volume                  17
_journal_year                    2019
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C26 H26 O5'
_chemical_formula_sum            'C26 H26 O5'
_chemical_formula_weight         418.49
_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'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_audit_update_record
;
2018-07-07 deposited with the CCDC.
2019-02-08 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.3173(7)
_cell_length_b                   10.8597(9)
_cell_length_c                   22.3122(19)
_cell_measurement_reflns_used    2364
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      71.9400
_cell_measurement_theta_min      4.2630
_cell_volume                     2257.6(3)
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.0
_diffrn_measured_fraction_theta_max 0.7909
_diffrn_measurement_device_type  'Xcalibur, Eos, Gemini'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0198
_diffrn_reflns_av_unetI/netI     0.0441
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            6917
_diffrn_reflns_theta_full        28.8037
_diffrn_reflns_theta_max         28.80
_diffrn_reflns_theta_min         3.32
_exptl_absorpt_coefficient_mu    0.085
_exptl_crystal_density_diffrn    1.2311
_exptl_crystal_F_000             888.4921
_refine_diff_density_max         0.2692
_refine_diff_density_min         -0.2297
_refine_diff_density_rms         0.0527
_refine_ls_abs_structure_details
'Flack, H. D. (1983). Acta Cryst. A39, 876-881.'
_refine_ls_abs_structure_Flack   -0.8(13)
_refine_ls_d_res_high            0.7376
_refine_ls_d_res_low             6.1363
_refine_ls_goodness_of_fit_ref   1.0772
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_constraints    46
_refine_ls_number_parameters     280
_refine_ls_number_reflns         4667
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.0772
_refine_ls_R_factor_all          0.0696
_refine_ls_R_factor_gt           0.0484
_refine_ls_shift/su_max          0.0025
_refine_ls_shift/su_mean         0.0001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0318P)^2^+0.1906P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.0972
_reflns_Friedel_coverage         0.671
_reflns_limit_h_max              11
_reflns_limit_h_min              -12
_reflns_limit_k_max              13
_reflns_limit_k_min              -13
_reflns_limit_l_max              30
_reflns_limit_l_min              -29
_reflns_number_gt                3619
_reflns_number_total             5890
_reflns_threshold_expression     I>=2u(I)
_cod_data_source_file            c8ob02896f2.cif
_cod_data_source_block           exp_1046
_cod_depositor_comments
'Adding full bibliography for 7156681--7156686.cif.'
_cod_database_code               7156684
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  {H14a,H14b} of C14, H7 of C7, {H17a,H17b} of C17, {H16a,H16b} of C16, H6 of
  C6, H5 of C5, H27 of C27, {H15a,H15b} of C15, H28 of C28, H29 of C29, H31 of
  C31, H30 of C30, H20 of C20, H12 of C12, H10 of C10, H13 of C13, H2 of C2, H8
  of C8, H3 of C3
 At 1.5 times of:
  {H24a,H24b,H24c} of C24
2.a Ternary CH refined with riding coordinates:
 C20(H20), C12(H12), C13(H13)
2.b Secondary CH2 refined with riding coordinates:
 C14(H14a,H14b), C17(H17a,H17b), C16(H16a,H16b), C15(H15a,H15b)
2.c Aromatic/amide H refined with riding coordinates:
 C10(H10), C2(H2), C8(H8), C3(H3), C7(H7), C6(H6), C5(H5), C27(H27), C28(H28),
 C29(H29), C31(H31), C30(H30)
2.d Idealised Me refined as rotating group:
 C24(H24a,H24b,H24c)
;