Ceric Ammonium Nitrate-Catalyzed Azidation of 1,2-Anhydro Sugars: Application in the Synthesis of Structurally Diverse Sugar-Derived Morpholine 1,2,3-Triazoles and 1,4-Oxazin-2-ones
Y. Suman Reddy; A. P. John Pal; Preeti Gupta; Alafia A. Ansari; Yashwant D. Vankar; Journal of Organic Chemistry 76 (2011) 5972–5984; doi:10.1021/jo200260w

data_4026466
_publ_contact_author_address
;Department of Chemistry 
Indian Institute of Technology 
Kanpur, Uttar Pradesh 
India, 208 016 
;
_publ_contact_author_email       vankar@iitk.ac.in
_publ_contact_author_name        'Dr. Y D Vankar'
_publ_contact_author_phone       +91-512-2597169
_publ_section_title
;
 Ceric Ammonium Nitrate-Catalyzed Azidation of 1,2-Anhydro Sugars:
 Application in the Synthesis of Structurally Diverse Sugar-Derived
 Morpholine 1,2,3-Triazoles and 1,4-Oxazin-2-ones
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5972
_journal_page_last               5984
_journal_paper_doi               10.1021/jo200260w
_journal_volume                  76
_journal_year                    2011
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C16 H26 N2 O12'
_chemical_formula_sum            'C16 H26 N2 O12'
_chemical_formula_weight         438.39
_space_group_IT_number           18
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2bc 2'
_symmetry_space_group_name_H-M   'P 2 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   4.558
_cell_length_b                   6.828
_cell_length_c                   29.676
_cell_measurement_reflns_used    5954
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      28.3
_cell_measurement_theta_min      2.8
_cell_volume                     923.577
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT+'
_computing_molecular_graphics    'Diamond 3'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       '\p and \w scans'
_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  0.0495
_diffrn_reflns_av_sigmaI/netI    0.0619
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -3
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -39
_diffrn_reflns_number            5954
_diffrn_reflns_theta_full        28.32
_diffrn_reflns_theta_max         28.32
_diffrn_reflns_theta_min         2.75
_exptl_absorpt_coefficient_mu    0.136
_exptl_absorpt_correction_T_max  0.991
_exptl_absorpt_correction_T_min  0.984
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS 2.10 (Bruker 2003)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.576
_exptl_crystal_description       needle
_exptl_crystal_F_000             464
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.310
_refine_diff_density_min         -0.333
_refine_diff_density_rms         0.075
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.8(19)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.114
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     152
_refine_ls_number_reflns         2261
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.115
_refine_ls_R_factor_all          0.0719
_refine_ls_R_factor_gt           0.0534
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0360P)^2^+0.7864P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1079
_refine_ls_wR_factor_ref         0.1341
_reflns_number_gt                1845
_reflns_number_total             2261
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo200260w_si_004.cif
_cod_data_source_block           10aprcm
_cod_original_cell_volume        923.6
_cod_original_sg_symbol_Hall     P2bc2
_cod_database_code               4026466