Total Synthesis of (\±)-Pentacycloanammoxic Acid
Vincent Mascitti; E. J. Corey; Journal of the American Chemical Society 126 (2004) 15664–15665; doi:10.1021/ja044089a

data_4113229
_publ_section_title
;
 Total Synthesis of (\+-)-Pentacycloanammoxic Acid
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15664
_journal_page_last               15665
_journal_paper_doi               10.1021/ja044089a
_journal_volume                  126
_journal_year                    2004
_chemical_formula_sum            'C24 H22 Br2 N2 O4'
_chemical_formula_weight         562.26
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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                 97.05(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.590(7)
_cell_length_b                   7.564(5)
_cell_length_c                   25.78(2)
_cell_measurement_temperature    213(2)
_cell_volume                     2243(3)
_computing_cell_refinement       'SMART (BRUKER, V5.625, 2001)'
_computing_data_collection       'ASTRO (BRUKER, V5.007, 1997)'
_computing_data_reduction        'SAINT (BRUKER, V6.22, 2001)'
_computing_molecular_graphics    'SHELXTL (BRUKER, 2000, V6.1)'
_computing_publication_material  'XCIF (Sheldrick and BRUKER, 1997, V5.1)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_detector_area_resol_mean 836
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker CCD'
_diffrn_measurement_method       '\w, 0.3 deg'
_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  0.0492
_diffrn_reflns_av_sigmaI/netI    0.0517
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            9310
_diffrn_reflns_theta_full        22.50
_diffrn_reflns_theta_max         22.50
_diffrn_reflns_theta_min         1.59
_diffrn_standards_decay_%        <1
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.648
_exptl_absorpt_correction_T_max  0.6687
_exptl_absorpt_correction_T_min  0.6687
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.665
_exptl_crystal_density_meas      0
_exptl_crystal_description       Chunk
_exptl_crystal_F_000             1128
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.631
_refine_diff_density_min         -0.485
_refine_diff_density_rms         0.086
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.290
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     283
_refine_ls_number_reflns         2930
_refine_ls_number_restraints     138
_refine_ls_restrained_S_all      1.259
_refine_ls_R_factor_all          0.0851
_refine_ls_R_factor_gt           0.0665
_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^)+(0.0322P)^2^+4.5421P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1080
_refine_ls_wR_factor_ref         0.1129
_reflns_number_gt                2444
_reflns_number_total             2930
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja044089asi20041013_122842.cif
_cod_data_source_block           ejc78t
_cod_database_code               4113229