Rhodium-mediated enantioselective cyclopropanation of allenes.
Gregg, Timothy M.; Farrugia, Mark K.; Frost, John R.; Organic letters 11 (2009) 4434–4436; doi:10.1021/ol9017968

data_1504163
_publ_section_title
;
 Rhodium-mediated enantioselective cyclopropanation of allenes.
;
_journal_issue                   19
_journal_name_full               'Organic letters'
_journal_page_first              4434
_journal_page_last               4436
_journal_paper_doi               10.1021/ol9017968
_journal_volume                  11
_journal_year                    2009
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C18 H15 Br O2'
_chemical_formula_sum            'C18 H15 Br O2'
_chemical_formula_weight         343.21
_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                   5.72310(10)
_cell_length_b                   12.9531(2)
_cell_length_c                   20.0245(3)
_cell_measurement_reflns_used    9381
_cell_measurement_temperature    90(1)
_cell_measurement_theta_max      28.286
_cell_measurement_theta_min      2.571
_cell_volume                     1484.45(4)
_computing_cell_refinement       'Bruker Saint v7.23A (Bruker, 2005)'
_computing_data_collection       'APEX2 (Bruker, 2004)'
_computing_data_reduction        'Bruker Saint v7.23A (Bruker, 2005)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      90(1)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART APEX2'
_diffrn_measurement_method       \wand\f-scans
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0184
_diffrn_reflns_av_sigmaI/netI    0.0282
_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       24
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            17933
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         1.87
_diffrn_source                   rotating-anode
_diffrn_source_type              'RIGAKU RU-2000BEH'
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.770
_exptl_absorpt_correction_T_max  0.579
_exptl_absorpt_correction_T_min  0.490
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2004/1 (Bruker, 2004)'
_exptl_crystal_colour            colourles
_exptl_crystal_density_diffrn    1.536
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             696
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.259
_refine_diff_density_min         -0.192
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.011(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     190
_refine_ls_number_reflns         3649
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0153
_refine_ls_R_factor_gt           0.0147
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0120P)^2^+0.1320P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0391
_refine_ls_wR_factor_ref         0.0392
_reflns_number_gt                3549
_reflns_number_total             3649
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol9017968_si_001.cif
_cod_data_source_block           TMG113c
_cod_original_sg_symbol_Hall     P2ac2ab
_cod_original_sg_symbol_H-M      P212121
_cod_database_code               1504163