Oxidative Difunctionalization of 2-Amino-4H-pyrans in Iodobenzene Diacetate and N-Chlorosuccinimide: Reactivity, Mechanistic Insights, and DFT Calculations
Santhosh Reddy Mandha; Manjula Alla; Vittal Rao Bommena; Jagadeesh Babu Nanubolu; Santosh Kumar Lingala; Soujanya Yarasi; Journal of Organic Chemistry 77 (2012) 10648–10654; doi:10.1021/jo301801b

data_4027753
_publ_section_title
;
 Oxidative Difunctionalization of 2-Amino-4H-pyrans in Iodobenzene
 Diacetate and N-Chlorosuccinimide: Reactivity, Mechanistic Insights, and
 DFT Calculations
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              10648
_journal_page_last               10654
_journal_paper_doi               10.1021/jo301801b
_journal_volume                  77
_journal_year                    2012
_chemical_formula_moiety         'C22 H20 N2 O3'
_chemical_formula_sum            'C22 H20 N2 O3'
_chemical_formula_weight         360.40
_chemical_name_systematic
;
3-amino-2,2-dimethoxy-4-phenyl-
3,4-dihydro-2H-benzo[h]chromene-3-carbonitrile
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_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                 111.1500(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.0429(7)
_cell_length_b                   19.0807(16)
_cell_length_c                   11.3218(9)
_cell_measurement_reflns_used    8336
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      27.75
_cell_measurement_theta_min      2.204
_cell_volume                     1821.9(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0194
_diffrn_reflns_av_sigmaI/netI    0.0133
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            17389
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.13
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_T_max  0.9731
_exptl_absorpt_correction_T_min  0.9630
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker AXS SADABS program'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.314
_exptl_crystal_description       block
_exptl_crystal_F_000             760
_exptl_crystal_size_max          0.43
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.31
_refine_diff_density_max         0.161
_refine_diff_density_min         -0.139
_refine_diff_density_rms         0.029
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     254
_refine_ls_number_reflns         3210
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0416
_refine_ls_R_factor_gt           0.0355
_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^)+(0.0611P)^2^+0.2834P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1025
_refine_ls_wR_factor_ref         0.1096
_reflns_number_gt                2744
_reflns_number_total             3210
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo301801b_si_002_1.cif
_cod_data_source_block           2a
_cod_database_code               4027753