Asymmetric total synthesis of (-)-panacene and correction of its relative configuration.
Boukouvalas, John; Pouliot, Martin; Robichaud, Joël; MacNeil, Stephen; Snieckus, Victor; Organic letters 8 (2006) 3597–3599; doi:10.1021/ol061385e

data_1506136
_publ_section_title
;
 Asymmetric total synthesis of (-)-panacene and correction of its relative
 configuration.
;
_journal_issue                   16
_journal_name_full               'Organic letters'
_journal_page_first              3597
_journal_page_last               3599
_journal_paper_doi               10.1021/ol061385e
_journal_volume                  8
_journal_year                    2006
_chemical_absolute_configuration rmad
_chemical_compound_source        'Synthesized by the authors. See text'
_chemical_formula_sum            'C19 H17 Br O3'
_chemical_formula_weight         373.24
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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            4
_cell_length_a                   6.365(3)
_cell_length_b                   14.361(4)
_cell_length_c                   19.468(7)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      30.00
_cell_measurement_theta_min      15.00
_cell_volume                     1779.5(12)
_computing_cell_refinement       'CAD4 Program (Nonius 1989)'
_computing_data_collection       'CAD4 Program (Nonius 1989)'
_computing_data_reduction        'Local Program'
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  'UdMX (local program)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  Enraf-Nonius-CAD4
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Sealed Tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.075
_diffrn_reflns_av_sigmaI/netI    0.0619
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            13363
_diffrn_reflns_theta_full        69.86
_diffrn_reflns_theta_max         69.86
_diffrn_reflns_theta_min         3.82
_diffrn_standards_decay_%        -0.18
_diffrn_standards_interval_time  60
_diffrn_standards_number         5
_exptl_absorpt_coefficient_mu    3.244
_exptl_absorpt_correction_T_max  0.4100
_exptl_absorpt_correction_T_min  0.3200
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details   'Gaussian from crystal shape'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.393
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             760
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.33
_refine_diff_density_max         0.271
_refine_diff_density_min         -0.283
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details 'Flack H D (1983), XXXX Friedel Pairs'
_refine_ls_abs_structure_Flack   -0.01(3)
_refine_ls_extinction_coef       0.00027(13)
_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   0.759
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     211
_refine_ls_number_reflns         3366
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.759
_refine_ls_R_factor_all          0.0867
_refine_ls_R_factor_gt           0.0423
_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^)+(0.0519P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0923
_refine_ls_wR_factor_ref         0.1060
_reflns_number_gt                1466
_reflns_number_total             3366
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ol061385esi20060620_035012.cif
_cod_data_source_block           laval7
_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.

'_geom_bond_publ_flag'
value 'Y' changed to 'y' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (24
times).

'_geom_angle_publ_flag' value 'Y' changed to 'y' according
to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29 (32
times).

'_geom_torsion_publ_flag' value 'Y' changed to 'y' according
to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29 (42 times).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
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_cod_original_sg_symbol_H-M      P212121
_cod_database_code               1506136