Unusual cyclopropanation of 9-bromocamphor derivatives: a novel formal C(1)-C(7) bond cleavage of camphor.
Li, Wei-Dong Z; Yang, Yu-Rong; Organic letters 7 (2005) 3107–3110; doi:10.1021/ol051141e

data_1506634
_publ_section_title
;
 Unusual cyclopropanation of 9-bromocamphor derivatives: a novel formal
 C(1)-C(7) bond cleavage of camphor.
;
_journal_issue                   14
_journal_name_full               'Organic letters'
_journal_page_first              3107
_journal_page_last               3110
_journal_paper_doi               10.1021/ol051141e
_journal_volume                  7
_journal_year                    2005
_chemical_formula_sum            'C11 H19 Br O2'
_chemical_formula_weight         263.17
_space_group_IT_number           19
_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            8
_cell_length_a                   7.2349(15)
_cell_length_b                   7.3055(15)
_cell_length_c                   44.210(9)
_cell_measurement_temperature    213(2)
_cell_volume                     2336.7(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_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  0.0799
_diffrn_reflns_av_sigmaI/netI    0.0897
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       58
_diffrn_reflns_limit_l_min       -58
_diffrn_reflns_number            15105
_diffrn_reflns_theta_full        27.89
_diffrn_reflns_theta_max         27.89
_diffrn_reflns_theta_min         0.92
_exptl_absorpt_coefficient_mu    3.493
_exptl_absorpt_correction_T_max  0.7214
_exptl_absorpt_correction_T_min  0.5417
_exptl_crystal_density_diffrn    1.496
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1088
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.551
_refine_diff_density_min         -0.684
_refine_diff_density_rms         0.107
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.061(17)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.084
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     261
_refine_ls_number_reflns         5525
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.084
_refine_ls_R_factor_all          0.0921
_refine_ls_R_factor_gt           0.0647
_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^)+(0.0521P)^2^+3.8945P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1417
_refine_ls_wR_factor_ref         0.1490
_reflns_number_gt                3988
_reflns_number_total             5525
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol051141esi20050516_111002.cif
_cod_data_source_block           ejc67t
_cod_database_code               1506634