Synthesis of 4-Selenothreofuranose Derivatives via Pummerer-Type Reactions of trans-3,4-Dioxygenated Tetrahydroselenophenes Mediated by a Selenonium Intermediate
Iwaoka, Michio; Hiyoshi, Yuta; Arai, Shota; Ito, Takeru; ACS Omega  (2021) –; doi:10.1021/acsomega.1c02160

data_4518844
_publ_section_title
;
 Synthesis of 4-Selenothreofuranose Derivatives via Pummerer-Type
 Reactions of trans-3,4-Dioxygenated Tetrahydroselenophenes Mediated by a
 Selenonium Intermediate
;
_journal_name_full               'ACS Omega'
_journal_paper_doi               10.1021/acsomega.1c02160
_journal_year                    2021
_chemical_formula_moiety         'C25 H20 O6 Se'
_chemical_formula_sum            'C25 H20 O6 Se'
_chemical_formula_weight         495.39
_chemical_name_common            4b'
_chemical_name_systematic
'(3R,4R/3S,4S)-Tetrahydroselenophene-2,3,4-triyl tribenzoate'
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_update_record
;
2020-11-24 deposited with the CCDC.	2021-04-24 downloaded from the CCDC.
;
_cell_angle_alpha                90.0000
_cell_angle_beta                 96.632(4)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            4
_cell_length_a                   9.7088(11)
_cell_length_b                   10.2175(9)
_cell_length_c                   21.667(2)
_cell_measurement_reflns_used    3636
_cell_measurement_temperature    100
_cell_measurement_theta_max      27.50
_cell_measurement_theta_min      3.10
_cell_volume                     2135.0(4)
_computing_cell_refinement       'CrystalClear-SM Expert 2.1 b45'
_computing_data_collection
'CrystalClear-SM Expert 2.1 b45 (Rigaku, 2015)'
_computing_data_reduction        'CrystalClear-SM Expert 2.1 b45'
_computing_molecular_graphics    'CrystalStructure 4.3'
_computing_publication_material  'CrystalStructure 4.3 (Rigaku, 2019)'
_computing_structure_refinement  'SHELXL Version 2018/3 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT Version 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100
_diffrn_detector_area_resol_mean 5.814
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.949
_diffrn_measurement_device_type  'Rigaku XtaLAB P200'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0955
_diffrn_reflns_av_unetI/netI     0.0621
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.949
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            20133
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.949
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.530
_diffrn_reflns_theta_min         3.130
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.800
_exptl_absorpt_correction_T_max  0.698
_exptl_absorpt_correction_T_min  0.477
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'REQAB (Rigaku, 1998)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.541
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1008.00
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.50
_refine_diff_density_min         -0.53
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     289
_refine_ls_number_reflns         4677
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0592
_refine_ls_R_factor_gt           0.0372
_refine_ls_shift/su_max          0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0469P)^2^+0.5395P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0873
_refine_ls_wR_factor_ref         0.0982
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3584
_reflns_number_total             4677
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            2046027.cif
_cod_data_source_block           20170802_yuta_c
_cod_database_code               4518844
_shelx_res_checksum              53227
_shelx_hkl_checksum              25657