Phosphine-Catalyzed Domino Reaction: An Efficient Method for the Synthesis of Bicyclo[3.2.0]heptenes Skeleton.
Zheng, Jie; Huang, You; Li, Zhengming; Organic letters 15 (2013) 5758–5761; doi:10.1021/ol402799w

data_1513128
_publ_section_title
;
 Phosphine-Catalyzed Domino Reaction: An Efficient Method for the
 Synthesis of Bicyclo[3.2.0]heptenes Skeleton.
;
_journal_issue                   22
_journal_name_full               'Organic letters'
_journal_page_first              5758
_journal_page_last               5761
_journal_paper_doi               10.1021/ol402799w
_journal_volume                  15
_journal_year                    2013
_chemical_formula_moiety         'C28 H25 Br O6 S2'
_chemical_formula_sum            'C28 H25 Br O6 S2'
_chemical_formula_weight         601.51
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   17.4940(15)
_cell_length_b                   10.8153(8)
_cell_length_c                   27.104(2)
_cell_measurement_reflns_used    18259
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      27.90
_cell_measurement_theta_min      1.40
_cell_volume                     5128.2(7)
_computing_cell_refinement       'CrystalClear-SM Expert 2.0 r4'
_computing_data_collection       'CrystalClear-SM Expert 2.0 r4 (Rigaku, 2009)'
_computing_data_reduction        'CrystalClear-SM Expert 2.0 r4'
_computing_molecular_graphics    'CrystalStructure 4.0'
_computing_publication_material  'CrystalStructure 4.0 (Rigaku, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector_area_resol_mean 14.222
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Rigaku Saturn724 CCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  multilayer
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0427
_diffrn_reflns_av_sigmaI/netI    0.0228
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            62603
_diffrn_reflns_theta_full        27.88
_diffrn_reflns_theta_max         27.88
_diffrn_reflns_theta_min         1.50
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.809
_exptl_absorpt_correction_T_max  0.7606
_exptl_absorpt_correction_T_min  0.6917
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   CrystalClear
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.558
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2464
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.537
_refine_diff_density_min         -0.354
_refine_diff_density_rms         0.060
_refine_ls_extinction_coef       0.00058(11)
_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   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     337
_refine_ls_number_reflns         6112
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.0336
_refine_ls_R_factor_gt           0.0301
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0406P)^2^+1.5639P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0725
_refine_ls_wR_factor_ref         0.0743
_reflns_number_gt                5631
_reflns_number_total             6112
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol402799w_si_001.cif
_cod_data_source_block           shelxl
_cod_database_code               1513128