Imidazolidinone intermediates in prolinamide-catalyzed aldol reactions.
Fuentes de Arriba, Angel L.; Simón, Luis; Raposo, César; Alcázar, Victoria; Sanz, Francisca; Muñiz, Francisco M; Morán, Joaquín R; Organic & biomolecular chemistry 8 (2010) 2979–2985; doi:10.1039/b926284a

data_7153320
_publ_section_title
;
 Imidazolidinone intermediates in prolinamide-catalyzed aldol reactions.
;
_journal_issue                   13
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2979
_journal_page_last               2985
_journal_paper_doi               10.1039/b926284a
_journal_volume                  8
_journal_year                    2010
_chemical_absolute_configuration rm
_chemical_formula_moiety         'C18 H17 N3 O3, C H2 Cl2'
_chemical_formula_sum            'C19 H19 Cl2 N3 O3'
_chemical_formula_weight         408.27
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 98.936(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.8341(4)
_cell_length_b                   8.8407(4)
_cell_length_c                   11.5844(6)
_cell_measurement_reflns_used    1507
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      59.58
_cell_measurement_theta_min      3.86
_cell_volume                     994.93(8)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      273(2)
_diffrn_measured_fraction_theta_full 0.958
_diffrn_measured_fraction_theta_max 0.958
_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           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0303
_diffrn_reflns_av_sigmaI/netI    0.0514
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            5546
_diffrn_reflns_theta_full        64.58
_diffrn_reflns_theta_max         64.58
_diffrn_reflns_theta_min         3.86
_exptl_absorpt_coefficient_mu    3.142
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.363
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prismatic
_exptl_crystal_F_000             424
_exptl_crystal_size_max          0.06
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.465
_refine_diff_density_min         -0.267
_refine_diff_density_rms         0.048
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     252
_refine_ls_number_reflns         2820
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0715
_refine_ls_R_factor_gt           0.0614
_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^)+(0.1124P)^2^+0.2413P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1745
_refine_ls_wR_factor_ref         0.1867
_reflns_number_gt                2368
_reflns_number_total             2820
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b926284a.txt
_cod_data_source_block           invertida
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_Hall     P2yb
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               7153320