Enantioselective Catalytic α-Alkylation of Aldehydes via an SN1 Pathway
Adam R. Brown; Wen-Hsin Kuo; Eric N. Jacobsen; Journal of the American Chemical Society 132 (2010) 9286–9288; doi:10.1021/ja103618r

data_4102660
_publ_section_title
;
 Enantioselective Catalytic \a-Alkylation of Aldehydes via an SN1 Pathway
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              9286
_journal_page_last               9288
_journal_paper_doi               10.1021/ja103618r
_journal_volume                  132
_journal_year                    2010
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C28 H32 N2 O'
_chemical_formula_sum            'C28 H32 N2 O'
_chemical_formula_weight         412.56
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   difmap
_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                   9.7107(4)
_cell_length_b                   12.3459(5)
_cell_length_c                   20.2414(8)
_cell_measurement_reflns_used    2345
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      27.53
_cell_measurement_theta_min      2.33
_cell_volume                     2426.69(17)
_computing_cell_refinement       'APEX2 (BRUKER, V2008.5-0, 2006)'
_computing_data_collection       'COSMO (BRUKER, V1.58, 2006)'
_computing_data_reduction        'SAINT (BRUKER, V7.34A, 2006)'
_computing_molecular_graphics
'SHELXTL (Sheldrick, Acta Cryst. A64 2008, 112-122)'
_computing_publication_material
'SHELXTL (Sheldrick, Acta Cryst. A64 2008, 112-122)'
_computing_structure_refinement
'SHELXL (Sheldrick, Acta Cryst. A64 2008, 112-122)'
_computing_structure_solution
'SHELXS (Sheldrick, Acta Cryst. A64 2008, 112-122)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_area_resol_mean 836.6
_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       '\w,and/f 0.5 deg'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0195
_diffrn_reflns_av_sigmaI/netI    0.0132
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            31743
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.93
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.068
_exptl_absorpt_correction_T_max  0.9892
_exptl_absorpt_correction_T_min  0.9682
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.129
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             888
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.358
_refine_diff_density_min         -0.151
_refine_diff_density_rms         0.036
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.4(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     281
_refine_ls_number_reflns         5580
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0426
_refine_ls_R_factor_gt           0.0393
_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^)+(0.0552P)^2^+0.3909P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1023
_refine_ls_wR_factor_ref         0.1054
_reflns_number_gt                5199
_reflns_number_total             5580
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja103618r_si_001.cif
_cod_data_source_block           enj093
_cod_database_code               4102660