A Combined Experimental and Theoretical Study of the Polar [3 + 2] Cycloaddition of Electrophilically Activated Carbonyl Ylides with Aldehydes and Imines
Bentabed-Ababsa, Ghenia; Derdour, Aicha; Roisnel, Thierry; Sáez, Jose A.; Pérez, Patricia; Chamorro, Eduardo; Domingo, Luis R.; Mongin, Florence; The Journal of Organic Chemistry 74 (2009) 2120–2133; doi:10.1021/jo8027104

data_4028935
_publ_section_title
;
 A Combined Experimental and Theoretical Study of the Polar [3 + 2]
 Cycloaddition of Electrophilically Activated Carbonyl Ylides with
 Aldehydes and Imines
;
_journal_issue                   5
_journal_name_full               'The Journal of Organic Chemistry'
_journal_page_first              2120
_journal_page_last               2133
_journal_paper_doi               10.1021/jo8027104
_journal_volume                  74
_journal_year                    2009
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C18 H12 N2 O4'
_chemical_formula_sum            'C18 H12 N2 O4'
_chemical_formula_weight         320.3
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      61
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   8.2939(5)
_cell_length_b                   12.8750(6)
_cell_length_c                   27.3006(14)
_cell_measurement_reflns_used    6810
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.47
_cell_measurement_theta_min      2.87
_cell_measurement_wavelength     0.71073
_cell_volume                     2915.3(3)
_computing_cell_refinement       'Bruker SMART, 2006'
_computing_data_collection       'Bruker SMART, 2006'
_computing_data_reduction        'Bruker SAINT, 2006'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al., 1999)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'APEXII, Bruker-AXS'
_diffrn_measurement_method       'CCD rotation images, thin slices'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0398
_diffrn_reflns_av_unetI/netI     0.0273
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            16804
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         2.98
_exptl_absorpt_coefficient_mu    0.105
_exptl_absorpt_correction_T_max  0.974
_exptl_absorpt_correction_T_min  0.940
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
  [Sheldrick, G.M. (2002). SADABS Bruker AXS Inc., Madison, Wisconsin, USA]
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.46
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1328
_exptl_crystal_size_max          0.55
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.374
_refine_diff_density_min         -0.238
_refine_diff_density_rms         0.05
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.122
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         3346
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.122
_refine_ls_R_factor_all          0.0508
_refine_ls_R_factor_gt           0.0471
_refine_ls_shift/su_max          0.011
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0463P)^2^+2.0941P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1126
_refine_ls_wR_factor_ref         0.1149
_reflns_number_gt                3129
_reflns_number_total             3346
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo8027104sup1.cif
_cod_data_source_block           6b
_cod_database_code               4028935