Desymmetrization of 7-dimethylphenylsilylcycloheptatriene. Towards the synthesis of new aminocycloheptitols.
Girard, Emeline; Desvergnes, Valérie; Tarnus, Céline; Landais, Yannick; Organic & biomolecular chemistry 8 (2010) 5628–5634; doi:10.1039/c0ob00521e

data_7153508
_publ_section_title
;
 Desymmetrization of 7-dimethylphenylsilylcycloheptatriene. Towards the
 synthesis of new aminocycloheptitols.
;
_journal_issue                   24
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              5628
_journal_page_last               5634
_journal_paper_doi               10.1039/c0ob00521e
_journal_volume                  8
_journal_year                    2010
_chemical_formula_sum            'C24 H33 N O7 Si'
_chemical_formula_weight         475.60
_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                86.959(3)
_cell_angle_beta                 78.879(2)
_cell_angle_gamma                80.525(3)
_cell_formula_units_Z            2
_cell_length_a                   9.0179(10)
_cell_length_b                   9.5313(11)
_cell_length_c                   15.0553(16)
_cell_measurement_temperature    143(2)
_cell_volume                     1252.1(2)
_computing_cell_refinement       'PROTEUM2 SUITE'
_computing_data_collection       'PROTEUM2 SUITE'
_computing_data_reduction        'PROTEUM2 SUITE'
_computing_molecular_graphics    SXGRAPH
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXD-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      143(2)
_diffrn_measured_fraction_theta_full 0.938
_diffrn_measured_fraction_theta_max 0.938
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0445
_diffrn_reflns_av_sigmaI/netI    0.0294
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            12802
_diffrn_reflns_theta_full        55.35
_diffrn_reflns_theta_max         55.35
_diffrn_reflns_theta_min         2.99
_exptl_absorpt_coefficient_mu    1.190
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.261
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             508
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.438
_refine_diff_density_min         -0.313
_refine_diff_density_rms         0.051
_refine_ls_extinction_coef       0.0145(9)
_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   1.093
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     299
_refine_ls_number_reflns         2996
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.093
_refine_ls_R_factor_all          0.0399
_refine_ls_R_factor_gt           0.0396
_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^)+(0.0529P)^2^+0.8066P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1043
_refine_ls_wR_factor_ref         0.1045
_reflns_number_gt                2955
_reflns_number_total             2996
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0ob00521e.txt
_cod_data_source_block           eg141f2_0m
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7153508