Anti selective glycolate aldol reactions of (S)-4-isopropyl-1-[(R)-1-phenylethyl]imidazolidin-2-one: application towards the asymmetric synthesis of 8-4'-oxyneolignans
Gangar, Mukesh; Ittuveetil, Avinash; Goyal, Sandeep; Pal, Anang; M., Harikrishnan; Nair, Vipin A.; RSC Adv.  (2016) –; doi:10.1039/C6RA22026F

data_7226804
_publ_section_title
;
 Anti selective glycolate aldol reactions of
 (S)-4-isopropyl-1-[(R)-1-phenylethyl]imidazolidin-2-one: application
 towards the asymmetric synthesis of 8-4'-oxyneolignans
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C6RA22026F
_journal_year                    2016
_chemical_absolute_configuration 'C8(R) C10(R) C23(R) C20(S)'
_chemical_formula_moiety         'C30 H34 N2 O4'
_chemical_formula_sum            'C30 H34 N2 O4'
_chemical_formula_weight         486.61
_chemical_melting_point          358.5(5)
_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'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2016-07-19
_audit_creation_method
;
Olex2 1.2
(compiled 2016.02.19 svn.r3266 for OlexSys, GUI svn.r5155)
;
_audit_update_record
;
2016-09-26 deposited with the CCDC.
2016-10-04 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.4181(16)
_cell_length_b                   13.682(2)
_cell_length_c                   18.006(3)
_cell_measurement_reflns_used    7169
_cell_measurement_temperature    100
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.2
_cell_volume                     2566.6(7)
_computing_cell_refinement
;
CrystalClear-SM Expert 2.0 r15 (Rigaku, 2011)
;
_computing_data_collection
;
CrystalClear-SM Expert 2.0 r15 (Rigaku, 2011)
;
_computing_data_reduction
;
CrystalClear-SM Expert 2.0 r15 (Rigaku, 2011)
;
_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    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100
_diffrn_detector                 CCD
_diffrn_detector_area_resol_mean 13.6612
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_details
;
scan:
    Number of images: 629
               Slice: -69.0000 - 119.7000
         Image width: 0.3000
            Exp time: 8.0000
       Rotation axis: Omega
               Omega: 0.0000
                 Chi: 54.0000
                 Phi: 0.0000
                 XTD: 49.8600
              2theta: 29.8900
scan:
    Number of images: 629
               Slice: -69.0000 - 119.7000
         Image width: 0.3000
            Exp time: 8.0000
       Rotation axis: Omega
               Omega: 0.0000
                 Chi: 54.0000
                 Phi: 90.0000
                 XTD: 49.8600
              2theta: 29.8900
scan:
    Number of images: 629
               Slice: -69.0000 - 119.7000
         Image width: 0.3000
            Exp time: 8.0000
       Rotation axis: Omega
               Omega: 0.0000
                 Chi: 54.0000
                 Phi: 180.0000
                 XTD: 49.8600
              2theta: 29.8900
scan:
    Number of images: 629
               Slice: -69.0000 - 119.7000
         Image width: 0.3000
            Exp time: 8.0000
       Rotation axis: Omega
               Omega: 0.0000
                 Chi: 54.0000
                 Phi: 270.0000
                 XTD: 49.8600
              2theta: 29.8900
;
_diffrn_measurement_device
;
XtaLABmini: Fixed Chi 2 circle
;
_diffrn_measurement_device_type
;
Rigaku Mercury375R (2x2 bin mode)
;
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_measurement_specimen_support Fiber
_diffrn_orient_matrix_type       d*Trek
_diffrn_orient_matrix_UB_11      0.090542
_diffrn_orient_matrix_UB_12      0.012694
_diffrn_orient_matrix_UB_13      -0.029233
_diffrn_orient_matrix_UB_21      -0.021937
_diffrn_orient_matrix_UB_22      0.053494
_diffrn_orient_matrix_UB_23      -0.044713
_diffrn_orient_matrix_UB_31      0.007886
_diffrn_orient_matrix_UB_32      0.037124
_diffrn_orient_matrix_UB_33      0.040546
_diffrn_radiation_monochromator  'Graphite Monochromator'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.1332
_diffrn_reflns_av_unetI/netI     0.0699
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.991
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            36777
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.991
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         27.582
_diffrn_reflns_theta_min         3.186
_diffrn_source                   'Sealed Tube'
_diffrn_source_current           12.0
_diffrn_source_power             0.6
_diffrn_source_voltage           50.0
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.639
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Blessing 1995'
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.259
_exptl_crystal_description       block
_exptl_crystal_F_000             1040
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: Ethanol/Hexane'
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.382
_refine_diff_density_min         -0.315
_refine_diff_density_rms         0.060
_refine_ls_abs_structure_details
;
 Flack x determined using 1875 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.6(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.012
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     329
_refine_ls_number_reflns         5892
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.012
_refine_ls_R_factor_all          0.0630
_refine_ls_R_factor_gt           0.0554
_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^)+(0.0883P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1391
_refine_ls_wR_factor_ref         0.1477
_reflns_Friedel_coverage         0.779
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.992
_reflns_number_gt                4897
_reflns_number_total             5892
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6ra22026f2.cif
_cod_data_source_block           mg-01_100k
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '358-359' was changed to '358.5(5)' -
the average value was taken and precision was estimated.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 
;
_cod_original_cell_volume        2566.5(7)
_cod_database_code               7226804
_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, All O(H) groups
2.a Ternary CH refined with riding coordinates:
 C8(H8), C10(H10), C19(H19), C20(H20), C23(H23)
2.b Secondary CH2 refined with riding coordinates:
 C7(H7A,H7B), C22(H22A,H22B)
2.c Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C5(H5), C6(H6), C12(H12), C13(H13), C14(H14),
 C15(H15), C16(H16), C26(H26), C27(H27), C28(H28), C29(H29), C30(H30)
2.d Idealised Me refined as rotating group:
 C17(H17A,H17B,H17C), C18(H18A,H18B,H18C), C24(H24A,H24B,H24C)
2.e Idealised tetrahedral OH refined as rotating group:
 O2(H2A)
;
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'