Benzothiazines in synthesis. Toward the synthesis of pseudopteroxazole.
Harmata, Michael; Hong, Xuechuan; Barnes, Charles L.; Organic letters 6 (2004) 2201–2203; doi:10.1021/ol049334+

data_1517157
_publ_section_title
;
 Benzothiazines in synthesis. Toward the synthesis of pseudopteroxazole.
;
_journal_issue                   13
_journal_name_full               'Organic letters'
_journal_page_first              2201
_journal_page_last               2203
_journal_paper_doi               10.1021/ol049334+
_journal_volume                  6
_journal_year                    2004
_chemical_formula_sum            'C24 H29 N O2 S'
_chemical_formula_weight         395.54
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 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            4
_cell_length_a                   5.4679(9)
_cell_length_b                   8.3878(13)
_cell_length_c                   45.772(7)
_cell_measurement_reflns_used    1254
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      18.1
_cell_measurement_theta_min      2.5
_cell_volume                     2099.3(6)
_computing_cell_refinement       'SAINT (Bruker, 1998)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        'SAINT (Bruker, 1998)'
_computing_molecular_graphics    'ORTEP-III (Burnett & Johnson, 1996)'
_computing_publication_material  'CIFTAB (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker SMART CCD area detector'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1348
_diffrn_reflns_av_sigmaI/netI    0.1526
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       50
_diffrn_reflns_limit_l_min       -46
_diffrn_reflns_number            11029
_diffrn_reflns_theta_full        23.25
_diffrn_reflns_theta_max         23.25
_diffrn_reflns_theta_min         1.78
_diffrn_standards_decay_%        0.0
_exptl_absorpt_coefficient_mu    0.174
_exptl_absorpt_correction_T_max  0.97
_exptl_absorpt_correction_T_min  0.90
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 Data were corrected for decay and absorption using the program SADABS 
 based on the method of R.H. Blessing (Acta Cryst. A51, 33-38, 1995).
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.252
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             848
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.327
_refine_diff_density_min         -0.316
_refine_diff_density_rms         0.082
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.2(2)
_refine_ls_extinction_coef       0.029(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.019
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     259
_refine_ls_number_reflns         3000
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.019
_refine_ls_R_factor_all          0.1553
_refine_ls_R_factor_gt           0.0671
_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^)+(0.0932P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1479
_refine_ls_wR_factor_ref         0.1932
_reflns_number_gt                1676
_reflns_number_total             3000
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol049334%2Bsi20040412_111644.cif
_cod_data_source_block           XH-V-50
_cod_original_sg_symbol_H-M      P2~1~2~1~2~1~
_cod_database_code               1517157