Hydantoin-bridged medium ring scaffolds by migratory insertion of urea-tethered nitrile anions into aromatic C-N bonds.
Millward, Makenzie J.; Ellis, Emily; Ward, John W.; Clayden, Jonathan; Chemical science 12 (2020) 2091–2096; doi:10.1039/d0sc06188c

data_1559761
_publ_section_title
;
 Hydantoin-bridged medium ring scaffolds by migratory insertion of
 urea-tethered nitrile anions into aromatic C-N bonds.
;
_journal_issue                   6
_journal_name_full               'Chemical science'
_journal_page_first              2091
_journal_page_last               2096
_journal_paper_doi               10.1039/d0sc06188c
_journal_volume                  12
_journal_year                    2020
_chemical_formula_moiety         'C18 H23 N3 O, 1.5(H2 O)'
_chemical_formula_sum            'C18 H26 N3 O2.5'
_chemical_formula_weight         324.42
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     iterative
_audit_creation_date             2019-03-21
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2020-03-30 deposited with the CCDC.	2020-12-11 downloaded from the CCDC.
;
_cell_angle_alpha                93.7306(19)
_cell_angle_beta                 95.390(2)
_cell_angle_gamma                108.1269(18)
_cell_formula_units_Z            2
_cell_length_a                   7.6118(2)
_cell_length_b                   9.3656(3)
_cell_length_c                   12.1634(4)
_cell_measurement_reflns_used    5942
_cell_measurement_temperature    100
_cell_measurement_theta_max      31.13
_cell_measurement_theta_min      2.30
_cell_volume                     816.35(4)
_computing_cell_refinement       'SAINT V8.38A (?, 2016)'
_computing_data_reduction        'SAINT V8.38A (?, 2016)'
_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      100.01
_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  0.0296
_diffrn_reflns_av_unetI/netI     0.0292
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            18692
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.507
_diffrn_reflns_theta_min         1.690
_diffrn_source                   'fine-focus sealed tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.7462
_exptl_absorpt_correction_T_min  0.6445
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.0582 before and 0.0412 after correction. The Ratio of minimum to maximum transmission is 0.8637. 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    1.320
_exptl_crystal_description       block
_exptl_crystal_F_000             350
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: DCM:Et2O'
_exptl_crystal_size_max          0.534
_exptl_crystal_size_mid          0.264
_exptl_crystal_size_min          0.196
_refine_diff_density_max         0.409
_refine_diff_density_min         -0.365
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     232
_refine_ls_number_reflns         4993
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0557
_refine_ls_R_factor_gt           0.0428
_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^)+(0.0567P)^2^+0.2838P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1072
_refine_ls_wR_factor_ref         0.1150
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4047
_reflns_number_total             4993
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0sc06188c2.cif
_cod_data_source_block           mm102_1
_cod_depositor_comments
;Adding full bibliography for 1559758--1559767.cif.

 Adding full bibliography for 1559758--1559767.cif.
;
_cod_original_formula_sum        'C18 H26 N3 O2.50'
_cod_database_code               1559761
_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 O(H,H) groups
2. Others
 Fixed Sof: O3(0.5) H3C(0.5) H3D(0.5)
3.a Free rotating group:
 O3(H3C,H3D)
3.b Secondary CH2 refined with riding coordinates:
 C2(H2A,H2B), C3(H3A,H3B), C4(H4A,H4B), C5(H5A,H5B), C7(H7A,H7B), C8(H8A,H8B),
 C9(H9A,H9B), C10(H10A,H10B), C11(H11A,H11B)
3.c Aromatic/amide H refined with riding coordinates:
 C13(H13), C14(H14), C15(H15), C16(H16)
;
_shelx_res_checksum              81872
_olex2_exptl_crystal_mounting_method 'Oil on pip'
_olex2_submission_special_instructions 'No special instructions were received'