An Aza Cyclopropylcarbinyl-Homoallyl Radical Rearrangement-Radical Cyclization Cascade. Synthesis of Dibenzoimidazoazepine and Oxazepine Derivatives
Alexander F. Khlebnikov; Mikhail S. Novikov; Petr P. Petrovskii; Helen Stoeckli-Evans; Journal of Organic Chemistry 76 (2011) 5384–5391; doi:10.1021/jo200788k

data_4026436
_publ_section_title
;
 An Aza Cyclopropylcarbinyl-Homoallyl Radical Rearrangement-Radical
 Cyclization Cascade. Synthesis of Dibenzoimidazoazepine and Oxazepine
 Derivatives
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5384
_journal_page_last               5391
_journal_paper_doi               10.1021/jo200788k
_journal_volume                  76
_journal_year                    2011
_chemical_formula_moiety         'C28 H22 N2 O3'
_chemical_formula_sum            'C28 H22 N2 O3'
_chemical_formula_weight         434.48
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                100.617(8)
_cell_angle_beta                 92.289(6)
_cell_angle_gamma                113.747(6)
_cell_formula_units_Z            2
_cell_length_a                   9.0578(7)
_cell_length_b                   10.9639(11)
_cell_length_c                   12.3700(10)
_cell_measurement_reflns_used    12473
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.09
_cell_measurement_theta_min      1.69
_cell_volume                     1096.26(18)
_computing_cell_refinement       'X-Area V1.52'
_computing_data_collection       'X-Area V1.52 (Stoe & Cie, 2009)'
_computing_data_reduction        'X-RED32 V1.48 (Stoe & Cie, 2009)'
_computing_molecular_graphics    'PLATON  (Spek, 2009)'
_computing_publication_material  'SHELXL-97 & PLATON'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector                 'image plate (34 cm diameter)'
_diffrn_detector_type            STOE
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       '2-circle goniometer'
_diffrn_measurement_device_type  'STOE IPDS 2'
_diffrn_measurement_method       '\f + \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  0.0347
_diffrn_reflns_av_sigmaI/netI    0.0292
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            13971
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.63
_diffrn_reflns_theta_min         1.69
_diffrn_source
'sealed X-ray tube, 12 x 0.4 mm long-fine focus'
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.316
_exptl_crystal_description       block
_exptl_crystal_F_000             456
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.39
_exptl_crystal_size_min          0.26
_refine_diff_density_max         0.303
_refine_diff_density_min         -0.181
_refine_diff_density_rms         0.034
_refine_ls_extinction_coef       0.0101(16)
_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   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     300
_refine_ls_number_reflns         4118
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0533
_refine_ls_R_factor_gt           0.0377
_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^)+(0.0424P)^2^+0.2248P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0844
_refine_ls_wR_factor_ref         0.0893
_reflns_number_gt                3257
_reflns_number_total             4118
_reflns_threshold_expression     I>2\s(I)
_publcif_info_exptl_table_max_cols 6
_cod_data_source_file            jo200788k_si_001_6.cif
_cod_data_source_block           17
_cod_original_cell_volume        1096.26(16)
_cod_database_code               4026436