Accessing polysubstituted oxazolidines, pyrrolidines and imidazolidines by regioselective [3 + 2] annulations of ketenimines with donor–acceptor oxiranes and aziridines
Alajarin, Mateo; Bañon, Daniel; Egea, Adrian; Marín-Luna, Marta; Orenes, Raul-Angel; Vidal, Angel; Organic Chemistry Frontiers 5 (2018) 2020–; doi:10.1039/C8QO00255J

data_1554294
_publ_section_title
;
 Accessing polysubstituted oxazolidines, pyrrolidines and imidazolidines
 by regioselective [3 + 2] annulations of ketenimines with donor--acceptor
 oxiranes and aziridines
;
_journal_issue                   13
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              2020
_journal_paper_doi               10.1039/C8QO00255J
_journal_volume                  5
_journal_year                    2018
_chemical_formula_sum            'C36 H36 N2 O4'
_chemical_formula_weight         560.67
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2018-02-09 deposited with the CCDC.
2018-05-09 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 91.3970(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.9629(5)
_cell_length_b                   9.8209(4)
_cell_length_c                   27.4846(12)
_cell_measurement_reflns_used    9996
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      72.19
_cell_measurement_theta_min      3.22
_cell_volume                     2958.3(2)
_computing_cell_refinement       'SAINT V8.27B (Bruker AXS Inc., 2011)'
_computing_data_collection       'APEX 2013.2 (Bruker AXS Inc.)'
_computing_data_reduction        'SAINT V8.27B (Bruker AXS Inc., 2011)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 10.4167
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker D8 QUEST'
_diffrn_measurement_method       'omega + phi scans'
_diffrn_radiation_monochromator  multilayer
_diffrn_radiation_source         'high brilliance microfocus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0280
_diffrn_reflns_av_sigmaI/netI    0.0149
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            49584
_diffrn_reflns_theta_full        72.25
_diffrn_reflns_theta_max         72.25
_diffrn_reflns_theta_min         3.22
_exptl_absorpt_coefficient_mu    0.652
_exptl_absorpt_correction_T_max  0.9085
_exptl_absorpt_correction_T_min  0.8136
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.259
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1192
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.234
_refine_diff_density_min         -0.222
_refine_diff_density_rms         0.043
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.017
_refine_ls_hydrogen_treatment    Riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     383
_refine_ls_number_reflns         5834
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.017
_refine_ls_R_factor_all          0.0398
_refine_ls_R_factor_gt           0.0366
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0521P)^2^+1.1158P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0937
_refine_ls_wR_factor_ref         0.0965
_reflns_number_gt                5375
_reflns_number_total             5834
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c8qo00255j2.cif
_cod_data_source_block           aeh165_0msp
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               1554294