Hypervalent Iodine Mediated Oxidative Cyclization of Acrylamide N-Carbamates to 5,5-Disubstituted Oxazolidine-2,4-diones
Duddupudi, Anantha Lakshmi; Pandey, Pankaj; Vo, Hien; Welsh, Colin L.; Doerksen, Robert J.; Cuny, Gregory D.; The Journal of Organic Chemistry  (2020) –; doi:10.1021/acs.joc.0c00581

data_4038340
_publ_section_title
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 Hypervalent Iodine Mediated Oxidative Cyclization of Acrylamide
 N-Carbamates to 5,5-Disubstituted Oxazolidine-2,4-diones
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_journal_name_full               'The Journal of Organic Chemistry'
_journal_paper_doi               10.1021/acs.joc.0c00581
_journal_year                    2020
_chemical_formula_sum            'C13 H19 N O4'
_chemical_formula_weight         253.29
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 99.070(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.8579(4)
_cell_length_b                   24.7186(16)
_cell_length_c                   7.8064(5)
_cell_measurement_reflns_used    7056
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      66.75
_cell_measurement_theta_min      6.01
_cell_volume                     1306.78(14)
_computing_cell_refinement       'SAINT v7.60A (Bruker-Nonius, 2013)'
_computing_data_collection       'APEX2 v2013.4-1 (Bruker-Nonius, 2013)'
_computing_data_reduction        'SAINT v7.60A (Bruker-Nonius, 2013)'
_computing_structure_refinement  'SHELXL v6.12 (G.M. Sheldrick, 2001)'
_computing_structure_solution    'SHELXS v6.12 (G.M. Sheldrick, 2001)'
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean 4K
_diffrn_measured_fraction_theta_full 0.977
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measurement_device_type  'Bruker DUO APEX II CCD'
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Incoatec 30 Watt Cu microsource'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0292
_diffrn_reflns_av_sigmaI/netI    0.0254
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            7516
_diffrn_reflns_theta_full        66.75
_diffrn_reflns_theta_max         66.75
_diffrn_reflns_theta_min         6.01
_diffrn_standards_decay_%        0.0
_exptl_absorpt_coefficient_mu    0.787
_exptl_absorpt_correction_T_max  0.7528
_exptl_absorpt_correction_T_min  0.6460
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SAINT v7.62A'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.287
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'flat column'
_exptl_crystal_F_000             544
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.315
_refine_diff_density_min         -0.185
_refine_diff_density_rms         0.038
_refine_ls_extinction_coef       0.0054(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     175
_refine_ls_number_reflns         2270
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0335
_refine_ls_R_factor_gt           0.0328
_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^)+(0.0411P)^2^+0.4827P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0865
_refine_ls_wR_factor_ref         0.0875
_reflns_number_gt                2208
_reflns_number_total             2270
_reflns_threshold_expression     >3.99sigma(I)
_cod_data_source_file            jo0c00581_si_003.cif
_cod_data_source_block           k1649
_cod_depositor_comments
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The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Empirical' was
changed to 'empirical' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/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 7556 2019-12-06 15:28:31Z antanas 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4038340