Formal Total Synthesis of (\±)-Estrone via the Furano Diene Approach
Ya-Ping Xue; Wei-Dong Z. Li; Journal of Organic Chemistry 76 (2011) 57–64; doi:10.1021/jo1015486

data_4025930
_publ_section_title
;
 Formal Total Synthesis of (\+-)-Estrone via the Furano Diene Approach
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              57
_journal_page_last               64
_journal_paper_doi               10.1021/jo1015486
_journal_volume                  76
_journal_year                    2011
_chemical_formula_sum            'C22 H30 Br N O3'
_chemical_formula_weight         436.38
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_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                83.627(7)
_cell_angle_beta                 81.274(7)
_cell_angle_gamma                79.700(8)
_cell_formula_units_Z            2
_cell_length_a                   6.4640(9)
_cell_length_b                   12.2690(17)
_cell_length_c                   13.6975(18)
_cell_measurement_reflns_used    1074
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      21.16
_cell_measurement_theta_min      2.36
_cell_volume                     1052.5(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0239
_diffrn_reflns_av_sigmaI/netI    0.0636
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            6003
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         1.51
_exptl_absorpt_coefficient_mu    1.974
_exptl_absorpt_correction_T_max  0.7696
_exptl_absorpt_correction_T_min  0.5707
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.377
_exptl_crystal_description       block
_exptl_crystal_F_000             456
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.685
_refine_diff_density_min         -0.313
_refine_diff_density_rms         0.060
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.011
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     250
_refine_ls_number_reflns         4083
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.011
_refine_ls_R_factor_all          0.1251
_refine_ls_R_factor_gt           0.0573
_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^)+(0.0876P)^2^+0.0323P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1414
_refine_ls_wR_factor_ref         0.1747
_reflns_number_gt                2092
_reflns_number_total             4083
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo1015486_si_003.cif
_cod_data_source_block           p1
_cod_original_cell_volume        1052.5(2)
_cod_database_code               4025930