A convenient method to construct (Z)-oxazines via 6-exo-dig iodocyclization and synthesis of indolin-3-one.
Vandavasi, Jaya Kishore; Kuo, Kung-Kai; Hu, Wan-Ping; Shen, Ho-Chanu; Lo, Wei-Sheng; Wang, Jeh-Jeng; Organic & biomolecular chemistry 11 (2013) 6520–6525; doi:10.1039/c3ob41272e

data_7153093
_publ_section_title
;
 A convenient method to construct (Z)-oxazines via 6-exo-dig
 iodocyclization and synthesis of indolin-3-one.
;
_journal_issue                   38
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              6520
_journal_page_last               6525
_journal_paper_doi               10.1039/c3ob41272e
_journal_volume                  11
_journal_year                    2013
_chemical_formula_moiety         'C21 H14 I N O'
_chemical_formula_sum            'C21 H14 I N O'
_chemical_formula_weight         423.23
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2yn'
_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                 105.672(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.6456(3)
_cell_length_b                   20.4565(5)
_cell_length_c                   9.9640(3)
_cell_measurement_reflns_used    4337
_cell_measurement_temperature    297(2)
_cell_measurement_theta_max      29.0728
_cell_measurement_theta_min      2.9056
_cell_volume                     1696.71(9)
_computing_cell_refinement
; 
CrysAlis RED, Oxford Diffraction Ltd., 
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET) 
(compiled Jun 10 2008,16:49:55) 
;
_computing_data_collection
; 
CrysAlis CCD, Oxford Diffraction Ltd., 
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET) 
(compiled Jun 10 2008,16:49:55) 
;
_computing_data_reduction
; 
CrysAlis RED, Oxford Diffraction Ltd., 
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET) 
(compiled Jun 10 2008,16:49:55) 
;
_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      297(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.866
_diffrn_measurement_device_type  'CCD detector'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0180
_diffrn_reflns_av_sigmaI/netI    0.0341
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            8278
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         29.13
_diffrn_reflns_theta_min         2.91
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    1.894
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.72875
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.33.46 (release 27-08-2009 CrysAlis171 .NET) 
(compiled Aug 27 2009,17:19:36) 
Empirical absorption correction using spherical harmonics, 
 implemented in SCALE3 ABSPACK scaling algorithm. 
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.657
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             832
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.37
_exptl_crystal_size_min          0.32
_refine_diff_density_max         0.683
_refine_diff_density_min         -0.750
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.987
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         3962
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.987
_refine_ls_R_factor_all          0.0524
_refine_ls_R_factor_gt           0.0308
_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^)+(0.0350P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0663
_refine_ls_wR_factor_ref         0.0699
_reflns_number_gt                2742
_reflns_number_total             3962
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ob41272e.txt
_cod_data_source_block           hphh
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7153093