Diastereoselective synthesis and spin-dependent photodecarbonylation of di(3-phenyl-2-pyrrolidinon-3-yl)ketones: synthesis of nonadjacent and adjacent stereogenic quaternary centers
Resendiz, Marino J. E.; Natarajan, Arunkumar; Garcia-Garibay, Miguel A.; Chemical Communications (Cambridge, United Kingdom)  (2008) 193–195; doi:10.1039/b711786h

data_7102788
_publ_section_title
;
 Diastereoselective synthesis and spin-dependent photodecarbonylation
 of di(3-phenyl-2-pyrrolidinon-3-yl)ketones: synthesis of nonadjacent
 and adjacent stereogenic quaternary centers
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   2
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              193
_journal_page_last               195
_journal_paper_doi               10.1039/b711786h
_journal_year                    2008
_chemical_formula_moiety         'C36 H36 N2 O4'
_chemical_formula_sum            'C36 H36 N2 O4'
_chemical_formula_weight         560.67
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_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                 116.358(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.277(6)
_cell_length_b                   10.860(6)
_cell_length_c                   16.533(8)
_cell_measurement_reflns_used    1197
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      22.79
_cell_measurement_theta_min      3.85
_cell_volume                     2940(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0790
_diffrn_reflns_av_sigmaI/netI    0.0817
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            10804
_diffrn_reflns_theta_full        27.40
_diffrn_reflns_theta_max         27.40
_diffrn_reflns_theta_min         3.75
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_T_max  0.9918
_exptl_absorpt_correction_T_min  0.9738
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Bruker)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.266
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cut-block
_exptl_crystal_F_000             1192
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.238
_refine_diff_density_min         -0.321
_refine_diff_density_rms         0.057
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     191
_refine_ls_number_reflns         3301
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.1085
_refine_ls_R_factor_gt           0.0595
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0587P)^2^+0.9483P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1237
_refine_ls_wR_factor_ref         0.1428
_reflns_number_gt                2034
_reflns_number_total             3301
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b711786h.txt
_cod_data_source_block           gg5006sg
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7102788