Endo-Selective Enyne Ring-Closing Metathesis Promoted by Stereogenic-at-Mo Monoalkoxide and Monoaryloxide Complexes. Efficient Synthesis of Cyclic Dienes Not Accessible through Reactions with Ru Carbenes
Yeon-Ju Lee; Richard R. Schrock; Amir H. Hoveyda; Journal of the American Chemical Society 131 (2009) 10652–10661; doi:10.1021/ja904098h

data_4104781
_publ_section_title
;
 Endo-Selective Enyne Ring-Closing Metathesis Promoted by
 Stereogenic-at-Mo Monoalkoxide and Monoaryloxide Complexes. Efficient
 Synthesis of Cyclic Dienes Not Accessible through Reactions with Ru
 Carbenes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              10652
_journal_page_last               10661
_journal_paper_doi               10.1021/ja904098h
_journal_volume                  131
_journal_year                    2009
_chemical_formula_moiety         'C58 H57.96 Br0.04 Mo N2 O'
_chemical_formula_sum            'C58 H57.96 Br0.04 Mo N2 O'
_chemical_formula_weight         897.96
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 103.893(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.414(3)
_cell_length_b                   27.088(6)
_cell_length_c                   13.856(4)
_cell_measurement_reflns_used    4939
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      19.86
_cell_measurement_theta_min      2.26
_cell_volume                     4523(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_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      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART APEX CCD'
_diffrn_measurement_method       '0.3 deg wide \w exposures'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0857
_diffrn_reflns_av_sigmaI/netI    0.1342
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            15729
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.85
_exptl_absorpt_coefficient_mu    0.367
_exptl_absorpt_correction_T_max  0.9891
_exptl_absorpt_correction_T_min  0.9819
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.319
_exptl_crystal_density_method    none
_exptl_crystal_description       rod
_exptl_crystal_F_000             1885
_exptl_crystal_size_max          0.05
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.651
_refine_diff_density_min         -0.564
_refine_diff_density_rms         0.087
_refine_ls_extinction_coef       na
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     569
_refine_ls_number_reflns         7966
_refine_ls_number_restraints     560
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.1359
_refine_ls_R_factor_gt           0.0735
_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^)+(0.0493P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1238
_refine_ls_wR_factor_ref         0.1454
_reflns_number_gt                5088
_reflns_number_total             7966
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja904098h_si_004.cif
_cod_data_source_block           C58H58MoN2O
_cod_database_code               4104781