Enantiomerically Puretrans-β-Lactams from α-Amino Acids via Compact Fluorescent Light (CFL) Continuous-Flow Photolysis
Yvette S. Mimieux Vaske; Maximillian E. Mahoney; Joseph P. Konopelski; David L. Rogow; William J. McDonald; Journal of the American Chemical Society 132 (2010) 11379–11385; doi:10.1021/ja1050023

data_4102846
_publ_contact_author_address     '379A PSB'
_publ_contact_author_email       mimieux@chemistry
_publ_contact_author_name        'Yvette Mimieux-Vaske'
_publ_contact_author_phone       9-5056
_publ_section_title
;
 Enantiomerically Puretrans-\b-Lactams from \a-Amino Acids via Compact
 Fluorescent Light (CFL) Continuous-Flow Photolysis
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11379
_journal_page_last               11385
_journal_paper_doi               10.1021/ja1050023
_journal_volume                  132
_journal_year                    2010
_chemical_absolute_configuration syn
_chemical_formula_sum            'C38 H36 N2 O4'
_chemical_formula_weight         584.69
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           18
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2 2ab'
_symmetry_space_group_name_H-M   'P 21 21 2'
_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                   24.534(6)
_cell_length_b                   9.960(3)
_cell_length_c                   12.424(3)
_cell_measurement_reflns_used    2102
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      37.676
_cell_measurement_theta_min      4.414
_cell_volume                     3035.9(14)
_computing_cell_refinement       'Bruker SAINT v7.34'
_computing_data_collection       'Bruker APEX-II v2.1-4'
_computing_data_reduction        'Bruker SAINT v7.34'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 83.33
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX-II'
_diffrn_measurement_method       \w/2\q-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  0.0709
_diffrn_reflns_av_sigmaI/netI    0.0301
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            17036
_diffrn_reflns_theta_full        20.15
_diffrn_reflns_theta_max         20.15
_diffrn_reflns_theta_min         1.84
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.7445
_exptl_absorpt_correction_T_min  0.6693
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.279
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1240
_exptl_crystal_size_max          0.64
_exptl_crystal_size_mid          0.45
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.284
_refine_diff_density_min         -0.307
_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   4(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.136
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     397
_refine_ls_number_reflns         1687
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.136
_refine_ls_R_factor_all          0.0443
_refine_ls_R_factor_gt           0.0364
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0426P)^2^+1.4857P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0845
_refine_ls_wR_factor_ref         0.0886
_reflns_number_gt                1495
_reflns_number_total             1687
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja1050023_si_006.cif
_cod_data_source_block           xsc09030
_cod_original_cell_volume        3036.0(14)
_cod_database_code               4102846