Simple Reagents for Direct Halonium-Induced Polyene Cyclizations
Scott A. Snyder; Daniel S. Treitler; Alexandria P. Brucks; Journal of the American Chemical Society 132 (2010) 14303–14314; doi:10.1021/ja106813s

data_4103237
_publ_section_title
;
 Simple Reagents for Direct Halonium-Induced Polyene Cyclizations
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              14303
_journal_page_last               14314
_journal_paper_doi               10.1021/ja106813s
_journal_volume                  132
_journal_year                    2010
_chemical_formula_sum            'C16 H25 Br O3'
_chemical_formula_weight         345.27
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 116.583(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.821(3)
_cell_length_b                   7.1644(12)
_cell_length_c                   15.281(3)
_cell_measurement_reflns_used    2427
_cell_measurement_temperature    125(2)
_cell_measurement_theta_max      22.84
_cell_measurement_theta_min      2.67
_cell_volume                     1549.0(5)
_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      125(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.1785
_diffrn_reflns_av_sigmaI/netI    0.1335
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            18600
_diffrn_reflns_theta_full        27.10
_diffrn_reflns_theta_max         27.10
_diffrn_reflns_theta_min         1.44
_exptl_absorpt_coefficient_mu    2.659
_exptl_absorpt_correction_T_max  0.9487
_exptl_absorpt_correction_T_min  0.4563
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            COLORLESS
_exptl_crystal_density_diffrn    1.480
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       PLATE
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.999
_refine_diff_density_min         -0.853
_refine_diff_density_rms         0.119
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.006
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     185
_refine_ls_number_reflns         3419
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.006
_refine_ls_R_factor_all          0.1552
_refine_ls_R_factor_gt           0.0548
_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^)+(0.0460P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0997
_refine_ls_wR_factor_ref         0.1304
_reflns_number_gt                1636
_reflns_number_total             3419
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja106813s_si_004.cif
_cod_data_source_block           danws10
_cod_original_cell_volume        1549.1(4)
_cod_database_code               4103237