Hetero Diels‒Alder reaction of olefin with o-quinone methides generated using (±)-binolphosphoric acid for the stereoselective synthesis of 2,4-diarylbenzopyrans: application to the formal synthesis of myristinin B/C
Gharpure, Santosh J.; Sathiyanarayanan, A. M.; Vuram, Prasanna K.; RSC Advances 3 (2013) 18279–; doi:10.1039/c3ra43526a

data_7239214
_publ_section_title
;
 Hetero Diels--Alder reaction of olefin with o-quinone methides generated
 using (+-)-binolphosphoric acid for the stereoselective synthesis of
 2,4-diarylbenzopyrans: application to the formal synthesis of myristinin
 B/C
;
_journal_issue                   40
_journal_name_full               'RSC Advances'
_journal_page_first              18279
_journal_paper_doi               10.1039/c3ra43526a
_journal_volume                  3
_journal_year                    2013
_chemical_formula_sum            'C23 H20 I O6'
_chemical_formula_weight         519.29
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                107.576(2)
_cell_angle_beta                 92.267(2)
_cell_angle_gamma                90.024(2)
_cell_formula_units_Z            2
_cell_length_a                   9.3330(4)
_cell_length_b                   9.5986(4)
_cell_length_c                   14.6529(7)
_cell_measurement_reflns_used    5149
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.19
_cell_measurement_theta_min      2.23
_cell_volume                     1250.30(10)
_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      293(2)
_diffrn_measured_fraction_theta_full 0.952
_diffrn_measured_fraction_theta_max 0.900
_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  0.0179
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_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            15676
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.58
_diffrn_reflns_theta_min         1.46
_exptl_absorpt_coefficient_mu    1.312
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            clear
_exptl_crystal_density_diffrn    1.379
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             518
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.25
_refine_diff_density_max         2.812
_refine_diff_density_min         -0.675
_refine_diff_density_rms         0.202
_refine_ls_extinction_coef       0.001(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   1.025
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     313
_refine_ls_number_reflns         5737
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0691
_refine_ls_R_factor_gt           0.0600
_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^)+(0.2000P)^2^+0.0010P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1982
_refine_ls_wR_factor_ref         0.2301
_reflns_number_gt                4851
_reflns_number_total             5737
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ra43526a.txt
_cod_data_source_block           new5
_cod_depositor_comments
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The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Triclinic' was changed to
'triclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P1
_cod_database_code               7239214