Enantioselective total synthesis of (+)-conicol via cascade three-component organocatalysis.
Hong, Bor-Cherng; Kotame, Prakash; Tsai, Chih-Wei; Liao, Ju-Hsiou; Organic letters 12 (2010) 776–779; doi:10.1021/ol902840x

data_1503415
_publ_section_title
;
 Enantioselective total synthesis of (+)-conicol via cascade
 three-component organocatalysis.
;
_journal_issue                   4
_journal_name_full               'Organic letters'
_journal_page_first              776
_journal_page_last               779
_journal_paper_doi               10.1021/ol902840x
_journal_volume                  12
_journal_year                    2010
_chemical_absolute_configuration syn
_chemical_formula_sum            'C22 H20 Br N O4'
_chemical_formula_weight         442.30
_space_group_IT_number           169
_symmetry_cell_setting           hexagonal
_symmetry_space_group_name_Hall  'P 61'
_symmetry_space_group_name_H-M   'P 61'
_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                120.00
_cell_formula_units_Z            6
_cell_length_a                   18.5358(18)
_cell_length_b                   18.5358(18)
_cell_length_c                   10.8967(15)
_cell_measurement_reflns_used    974
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      23.529
_cell_measurement_theta_min      -23.529
_cell_volume                     3242.3(6)
_computing_cell_refinement       'BRUKER SMART'
_computing_data_collection       'BRUKER SMART'
_computing_data_reduction        'BRUKER SAINT'
_computing_molecular_graphics    Ortep-3
_computing_publication_material  'Wingx publication routines(Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker Smart Apex'
_diffrn_measurement_method       'phi-omega scan'
_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  0.0937
_diffrn_reflns_av_sigmaI/netI    0.0713
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            23088
_diffrn_reflns_theta_full        24.72
_diffrn_reflns_theta_max         24.72
_diffrn_reflns_theta_min         1.27
_exptl_absorpt_coefficient_mu    1.927
_exptl_absorpt_correction_T_max  0.9304
_exptl_absorpt_correction_T_min  0.8611
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.359
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             1356
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.308
_refine_diff_density_min         -0.221
_refine_diff_density_rms         0.058
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.009(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.939
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_refine_ls_matrix_type           full
_refine_ls_number_parameters     275
_refine_ls_number_reflns         3693
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.939
_refine_ls_R_factor_all          0.0938
_refine_ls_R_factor_gt           0.0528
_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^)+(0.0544P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1005
_refine_ls_wR_factor_ref         0.1137
_reflns_number_gt                2291
_reflns_number_total             3693
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol902840x_si_002.cif
_cod_data_source_block           pmk01as
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Hexagonal' changed to 'hexagonal'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Empirical'
changed to 'empirical' 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 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_Hall     'p 61'
_cod_database_code               1503415