Enantioselective Michael Additions to α,β-Unsaturated Imides Catalyzed by a Salen-Al Complex
Mark S. Taylor; Eric N. Jacobsen; Journal of the American Chemical Society 125 (2003) 11204–11205; doi:10.1021/ja037177o

data_4114159
_publ_section_title
;
 Enantioselective Michael Additions to \a,\b-Unsaturated Imides Catalyzed
 by a Salen-Al Complex
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11204
_journal_page_last               11205
_journal_paper_doi               10.1021/ja037177o
_journal_volume                  125
_journal_year                    2003
_chemical_formula_sum            'C24 H23 F3 N2 O4'
_chemical_formula_weight         460.44
_space_group_IT_number           170
_symmetry_cell_setting           hexagonal
_symmetry_space_group_name_Hall  'P 65'
_symmetry_space_group_name_H-M   'P 65'
_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                120.00
_cell_formula_units_Z            6
_cell_length_a                   12.5069(8)
_cell_length_b                   12.5069(8)
_cell_length_c                   26.069(2)
_cell_measurement_temperature    213(2)
_cell_volume                     3531.5(4)
_computing_cell_refinement       'SMART (BRUKER, V5.054, 1998)'
_computing_data_collection       'ASTRO (BRUKER, V5.007, 1997)'
_computing_data_reduction        'SAINT (BRUKER, V6.01, 1999)'
_computing_molecular_graphics    'SHELXTL (BRUKER, 1998, V5.1)'
_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 836.6
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.1507
_diffrn_reflns_av_sigmaI/netI    0.1596
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            23805
_diffrn_reflns_theta_full        28.27
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         1.88
_diffrn_standards_decay_%        <1
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.104
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.299
_exptl_crystal_description       needle
_exptl_crystal_F_000             1440
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.399
_refine_diff_density_min         -0.266
_refine_diff_density_rms         0.073
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1(3)
_refine_ls_extinction_coef       0.030(5)
_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   0.990
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     310
_refine_ls_number_reflns         4736
_refine_ls_number_restraints     19
_refine_ls_restrained_S_all      0.990
_refine_ls_R_factor_all          0.2359
_refine_ls_R_factor_gt           0.0996
_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^)+(0.1690P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2532
_refine_ls_wR_factor_ref         0.3255
_reflns_number_gt                1852
_reflns_number_total             4736
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja037177osi20030716_062355.cif
_cod_data_source_block           5b
_cod_original_cell_volume        3531.5(5)
_cod_database_code               4114159