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_4034606
_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_formula_moiety         'C16 H20 Cl N3 O4'
_chemical_formula_sum            'C16 H20 Cl N3 O4'
_chemical_formula_weight         353.80
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     iterative
_audit_creation_date             2017-03-22
_audit_creation_method
;
Olex2 1.2
(compiled 2017.03.02 svn.r3394 for OlexSys, GUI svn.r5324)
;
_cell_angle_alpha                90
_cell_angle_beta                 106.2718(17)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.0063(3)
_cell_length_b                   12.9939(4)
_cell_length_c                   14.0411(3)
_cell_measurement_reflns_used    3867
_cell_measurement_temperature    100
_cell_measurement_theta_max      26.77
_cell_measurement_theta_min      2.18
_cell_volume                     1752.51(9)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_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
;
Superflip (Palatinus & Chapuis, 2007;Palatinus & van der Lee, 2008;
Palatinus et al., 2012)
;
_diffrn_ambient_temperature      100
_diffrn_detector                 'Bruker area detector'
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device       'Bruker Apex II kappa CCD area detector'
_diffrn_measurement_device_type  'Bruker Apex II kappa CCD area detector'
_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  0.0403
_diffrn_reflns_av_unetI/netI     0.0482
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            14861
_diffrn_reflns_point_group_measured_fraction_full 0.707
_diffrn_reflns_point_group_measured_fraction_max 0.696
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.102
_diffrn_reflns_theta_min         1.511
_diffrn_source                   'fine-focus sealed tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.243
_exptl_absorpt_correction_T_max  0.7458
_exptl_absorpt_correction_T_min  0.5984
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction. wR2(int) was 0.0806 before and 0.0496 after correction. The Ratio of minimum to maximum transmission is 0.8024. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.341
_exptl_crystal_description       plate
_exptl_crystal_F_000             744
_exptl_crystal_size_max          0.554
_exptl_crystal_size_mid          0.468
_exptl_crystal_size_min          0.164
_refine_diff_density_max         0.198
_refine_diff_density_min         -0.217
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     472
_refine_ls_number_reflns         5383
_refine_ls_number_restraints     55
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0449
_refine_ls_R_factor_gt           0.0364
_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^)+(0.0397P)^2^+0.1431P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0811
_refine_ls_wR_factor_ref         0.0854
_reflns_Friedel_coverage         0.333
_reflns_Friedel_fraction_full    0.385
_reflns_Friedel_fraction_max     0.364
_reflns_number_gt                4756
_reflns_number_total             5383
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo9b00727_si_002.cif
_cod_data_source_block           mm30_compound_2e
_cod_database_code               4034606
_shelxl_version_number           2013-4
_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. Restrained distances
 C29-C30 \\sim C29-C30A \\sim C29-C31 \\sim C29-C31A \\sim C29-C32 \\sim
C29-C32A
 with sigma of 0.01
 C30-C31 \\sim C30A-C31A \\sim C31-C32 \\sim C31A-C32A \\sim C32-C30 \\sim
C32A-C30A
 with sigma of 0.01
3. Uiso/Uaniso restraints and constraints
C32 \\sim C30 \\sim C31 \\sim C31A \\sim C30A \\sim C32A: within 2A with sigma
of 0.01 and sigma for terminal atoms of 0.02
4. Others
 Sof(C30A)=Sof(H30D)=Sof(H30E)=Sof(H30F)=Sof(C31A)=Sof(H31D)=Sof(H31E)=
 Sof(H31F)=Sof(C32A)=Sof(H32D)=Sof(H32E)=Sof(H32F)=1-FVAR(1)
 Sof(C30)=Sof(H30A)=Sof(H30B)=Sof(H30C)=Sof(C31)=Sof(H31A)=Sof(H31B)=Sof(H31C)=
 Sof(C32)=Sof(H32A)=Sof(H32B)=Sof(H32C)=FVAR(1)
5.a Ternary CH refined with riding coordinates:
 C8(H8), C10(H10), C24(H24), C26(H26)
5.b Secondary CH2 refined with riding coordinates:
 C7(H7A,H7B), C23(H23A,H23B)
5.c Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C5(H5), C6(H6), C18(H18), C19(H19), C21(H21), C22(H22)
5.d Idealised Me refined as rotating group:
 C12(H12A,H12B,H12C), C14(H14A,H14B,H14C), C15(H15A,H15B,H15C), C16(H16A,H16B,
 H16C), C28(H28A,H28B,H28C), C30(H30A,H30B,H30C), C30A(H30D,H30E,H30F),
 C31(H31A,H31B,H31C), C31A(H31D,H31E,H31F), C32(H32A,H32B,H32C), C32A(H32D,H32E,
 H32F)
;
_shelx_res_checksum              15210
_shelx_hkl_checksum              21021
_olex2_submission_special_instructions 'No special instructions were received'