Concise Total Synthesis and Stereochemical Revision of all (-)-Trigonoliimines
Sunkyu Han; Mohammad Movassaghi; Journal of the American Chemical Society 133 (2011) 10768–10771; doi:10.1021/ja204597k

data_4106428
_publ_section_title
;
 Concise Total Synthesis and Stereochemical Revision of all
 (-)-Trigonoliimines
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              10768
_journal_page_last               10771
_journal_paper_doi               10.1021/ja204597k
_journal_volume                  133
_journal_year                    2011
_chemical_absolute_configuration unk
_chemical_formula_sum            'C22 H22 N4 O2'
_chemical_formula_weight         374.44
_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                   7.3013(2)
_cell_length_b                   7.5801(2)
_cell_length_c                   32.8941(8)
_cell_measurement_reflns_used    9809
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      69.70
_cell_measurement_theta_min      5.38
_cell_volume                     1820.51(8)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0276
_diffrn_reflns_av_sigmaI/netI    0.0109
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            39871
_diffrn_reflns_theta_full        66.57
_diffrn_reflns_theta_max         66.57
_diffrn_reflns_theta_min         2.69
_exptl_absorpt_coefficient_mu    0.723
_exptl_absorpt_correction_T_max  0.9312
_exptl_absorpt_correction_T_min  0.8688
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.366
_exptl_crystal_description       block
_exptl_crystal_F_000             792
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.220
_refine_diff_density_min         -0.160
_refine_diff_density_rms         0.037
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.1(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     263
_refine_ls_number_reflns         3212
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0309
_refine_ls_R_factor_gt           0.0306
_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^)+(0.0472P)^2^+0.5953P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0798
_refine_ls_wR_factor_ref         0.0802
_reflns_number_gt                3169
_reflns_number_total             3212
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja204597k_si_004.cif
_cod_data_source_block           d8_10127
_cod_database_code               4106428