Amino Acid-Derived trans- N-Chloroformylimidazolidinones: Scalable, Stereoselective Synthesis, Structure, and Utility.
Amer, Mostafa Mahmoud; Abas, Hossay; Leonard, Daniel J.; Ward, John W.; Clayden, Jonathan; The Journal of organic chemistry 84 (2019) 7199–7206; doi:10.1021/acs.joc.9b00727

data_4034605
_publ_section_title
;
 Amino Acid-Derived trans- N-Chloroformylimidazolidinones: Scalable,
 Stereoselective Synthesis, Structure, and Utility.
;
_journal_issue                   11
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              7199
_journal_page_last               7206
_journal_paper_doi               10.1021/acs.joc.9b00727
_journal_volume                  84
_journal_year                    2019
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C16 H20 Cl F N2 O2'
_chemical_formula_sum            'C16 H20 Cl F N2 O2'
_chemical_formula_weight         326.79
_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     dual
_audit_creation_date             2018-04-12
_audit_creation_method
;
Olex2 1.2
(compiled 2018.04.03 svn.r3497 for OlexSys, GUI svn.r5486)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.99270(10)
_cell_length_b                   15.8308(3)
_cell_length_c                   16.9752(3)
_cell_measurement_reflns_used    4985
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.89
_cell_measurement_theta_min      2.57
_cell_volume                     1610.42(5)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_collection       'Bruker Apex suite'
_computing_data_reduction        'SAINT v8.37A (Bruker, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'Bruker area detector'
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'Bruker Apex II kappa CCD area detector'
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0341
_diffrn_reflns_av_unetI/netI     0.0323
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            14947
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.959
_diffrn_reflns_theta_min         2.400
_diffrn_source                   'fine-focus sealed tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.256
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5884
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction. wR2(int) was 0.0798 before and 0.0465 after correction. The Ratio of minimum to maximum transmission is 0.7892. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.348
_exptl_crystal_description       block
_exptl_crystal_F_000             688
_exptl_crystal_size_max          0.439
_exptl_crystal_size_mid          0.351
_exptl_crystal_size_min          0.21
_refine_diff_density_max         0.349
_refine_diff_density_min         -0.421
_refine_diff_density_rms         0.053
_refine_ls_abs_structure_details
;
 Flack x determined using 1421 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.02(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     203
_refine_ls_number_reflns         3864
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0401
_refine_ls_R_factor_gt           0.0360
_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^)+(0.0429P)^2^+0.8771P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0915
_refine_ls_wR_factor_ref         0.0938
_reflns_Friedel_coverage         0.728
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                3577
_reflns_number_total             3864
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo9b00727_si_002.cif
_cod_data_source_block           testo1_compound_2d
_cod_database_code               4034605
_shelx_shelxl_version_number     2017/1
_shelx_estimated_absorpt_t_max   0.948
_shelx_estimated_absorpt_t_min   0.896
_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
2.a Ternary CH refined with riding coordinates:
 C1(H1), C2(H2)
2.b Secondary CH2 refined with riding coordinates:
 C10(H10A,H10B)
2.c Aromatic/amide H refined with riding coordinates:
 C12(H12), C14(H14), C15(H15), C16(H16)
2.d Idealised Me refined as rotating group:
 C4(H4A,H4B,H4C), C6(H6A,H6B,H6C), C7(H7A,H7B,H7C), C8(H8A,H8B,H8C)
;
_shelx_res_checksum              55319
_shelx_hkl_checksum              11537
_olex2_submission_special_instructions 'No special instructions were received'