Effect of Chain Length on Radical to Carbanion Cyclo-Coupling of Bromoaryl Alkyl-Linked Oxazolines: 1,3-Areneotropic Migration of Oxazolines
Laura J. Marshall; Mark D. Roydhouse; Alexandra M. Z. Slawin; John C. Walton; Journal of Organic Chemistry 72 (2007) 898–911; doi:10.1021/jo0620720

data_4022668
_publ_section_title
;
 Effect of Chain Length on Radical to Carbanion Cyclo-Coupling of
 Bromoaryl Alkyl-Linked Oxazolines: 1,3-Areneotropic Migration of
 Oxazolines
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              898
_journal_page_last               911
_journal_paper_doi               10.1021/jo0620720
_journal_volume                  72
_journal_year                    2007
_chemical_formula_moiety         'C22 H23 N O'
_chemical_formula_sum            'C22 H23 N O'
_chemical_formula_weight         317.41
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   7.2553(3)
_cell_length_b                   18.2486(6)
_cell_length_c                   25.7308(9)
_cell_measurement_reflns_used    34285
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      68.58
_cell_measurement_theta_min      1.68
_cell_volume                     3406.7(2)
_computing_cell_refinement       'CrystalClear (Rigaku Corp., 2004)'
_computing_data_collection       'CrystalClear (Rigaku Corp., 2004)'
_computing_data_reduction        'CrystalClear (Rigaku Corp., 2004)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 0.83
_diffrn_measured_fraction_theta_full 0.959
_diffrn_measured_fraction_theta_max 0.959
_diffrn_measurement_device_type  CCD
_diffrn_measurement_method       dtprofit.ref
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0762
_diffrn_reflns_av_sigmaI/netI    0.0221
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            40869
_diffrn_reflns_theta_full        67.74
_diffrn_reflns_theta_max         67.74
_diffrn_reflns_theta_min         3.44
_exptl_absorpt_coefficient_mu    0.580
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.847
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.238
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1360
_exptl_crystal_size_max          0.270
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.050
_refine_diff_density_max         0.239
_refine_diff_density_min         -0.231
_refine_diff_density_rms         0.049
_refine_ls_extinction_coef       0.0016(2)
_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   0.974
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     219
_refine_ls_number_reflns         2960
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.974
_refine_ls_R_factor_all          0.0455
_refine_ls_R_factor_gt           0.0446
_refine_ls_shift/su_max          0.061
_refine_ls_shift/su_mean         0.012
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0716P)^2^+1.2712P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1162
_refine_ls_wR_factor_ref         0.1174
_reflns_number_gt                2867
_reflns_number_total             2960
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo0620720si20061006_065538.cif
_cod_data_source_block           18
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
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_cod_database_code               4022668