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_4038338
_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            'C20 H19 N O6'
_chemical_formula_weight         369.36
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 102.425(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            12
_cell_length_a                   12.061(2)
_cell_length_b                   28.652(5)
_cell_length_c                   16.333(3)
_cell_measurement_reflns_used    8190
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      25.07
_cell_measurement_theta_min      5.00
_cell_volume                     5512.0(17)
_computing_cell_refinement       'SAINT v8.34A (Bruker-Nonius, 2017)'
_computing_data_collection       'APEX2 v2014.11-0 (Bruker-Nonius, 2014)'
_computing_data_reduction        'SAINT v8.34A (Bruker-Nonius, 2017)'
_computing_structure_refinement  'SHELXL v6.12 (G.M. Sheldrick, 2001)'
_computing_structure_solution    'SHELXTL XT 2014/4 (G.M. Sheldrick, 2014)'
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean 4K
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device_type  'Bruker DUO APEX II CCD'
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0134
_diffrn_reflns_av_sigmaI/netI    0.0136
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       33
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            26146
_diffrn_reflns_theta_full        25.07
_diffrn_reflns_theta_max         25.07
_diffrn_reflns_theta_min         5.08
_diffrn_standards_decay_%        0.0
_exptl_absorpt_coefficient_mu    0.099
_exptl_absorpt_correction_T_max  0.7452
_exptl_absorpt_correction_T_min  0.6863
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SAINT v7.60A'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.335
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2328
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.281
_refine_diff_density_min         -0.205
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.123
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     757
_refine_ls_number_reflns         9555
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.123
_refine_ls_R_factor_all          0.0554
_refine_ls_R_factor_gt           0.0474
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0365P)^2^+4.4411P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1204
_refine_ls_wR_factor_ref         0.1269
_reflns_number_gt                7994
_reflns_number_total             9766
_reflns_threshold_expression     >3.99sigma(I)
_cod_data_source_file            jo0c00581_si_004.cif
_cod_data_source_block           k1672
_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)/c
_cod_database_code               4038338