Stereoselective Rhodium-Catalyzed [3 + 2 + 1] Carbocyclization of Alkenylidenecyclopropanes with Carbon Monoxide: Theoretical Evidence for a Trimethylenemethane Metallacycle Intermediate
Shivnath Mazumder; Deju Shang; Daniela E. Negru; Mu-Hyun Baik; P. Andrew Evans; Journal of the American Chemical Society 134 (2012) 20569–20572; doi:10.1021/ja305467x

data_4119034
_publ_section_title
;
 Stereoselective Rhodium-Catalyzed [3 + 2 + 1] Carbocyclization of
 Alkenylidenecyclopropanes with Carbon Monoxide: Theoretical Evidence for
 a Trimethylenemethane Metallacycle Intermediate
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              20569
_journal_page_last               20572
_journal_paper_doi               10.1021/ja305467x
_journal_volume                  134
_journal_year                    2012
_chemical_absolute_configuration ad
_chemical_formula_sum            'C16 H19 N O3 S'
_chemical_formula_weight         305.38
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 107.071(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   11.2299(7)
_cell_length_b                   6.1185(4)
_cell_length_c                   11.4490(7)
_cell_measurement_reflns_used    2473
_cell_measurement_temperature    180(2)
_cell_measurement_theta_max      27.09
_cell_measurement_theta_min      2.23
_cell_volume                     752.00(8)
_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      180(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_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  0.0151
_diffrn_reflns_av_sigmaI/netI    0.0219
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       3
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            3500
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.86
_exptl_absorpt_coefficient_mu    0.225
_exptl_absorpt_correction_T_max  0.9933
_exptl_absorpt_correction_T_min  0.9564
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.349
_exptl_crystal_description       plate
_exptl_crystal_F_000             324
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.259
_refine_diff_density_min         -0.232
_refine_diff_density_rms         0.035
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.02(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.072
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     192
_refine_ls_number_reflns         1951
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.071
_refine_ls_R_factor_all          0.0269
_refine_ls_R_factor_gt           0.0258
_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^)+(0.0393P)^2^+0.1269P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0671
_refine_ls_wR_factor_ref         0.0684
_reflns_number_gt                1899
_reflns_number_total             1951
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja305467x_si_004.cif
_cod_data_source_block           ae01
_cod_database_code               4119034