Enantioselective Synthesis of Planar-Chiral Metacyclophanes through Rhodium-Catalyzed Alkyne Cyclotrimerization
Ken Tanaka; Hiromi Sagae; Kazuki Toyoda; Keiichi Noguchi; Masao Hirano; Journal of the American Chemical Society 129 (2007) 1522–1523; doi:10.1021/ja0679127

data_4109080
_publ_contact_author_address
;
Department of Applied Chemistry
Graduate School of Engineering
Tokyo University of Agriculture and Technology
Koganei
Tokyo 184-8588
Japan
;
_publ_contact_author_email       tanaka-k@cc.tuat.ac.jp
_publ_contact_author_fax         +81-42-388-7037
_publ_contact_author_name        'Dr Ken Tanaka'
_publ_contact_author_phone       +81-42-388-7037
_publ_section_title
;
 Enantioselective Synthesis of Planar-Chiral Metacyclophanes through
 Rhodium-Catalyzed Alkyne Cyclotrimerization
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1522
_journal_page_last               1523
_journal_paper_doi               10.1021/ja0679127
_journal_volume                  129
_journal_year                    2007
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C18 H24 O5'
_chemical_formula_sum            'C18 H24 O5'
_chemical_formula_weight         320.37
_chemical_name_systematic
;
 [9]metacyclophane
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2006-03-29
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.7737(5)
_cell_length_b                   8.8872(5)
_cell_length_c                   20.9878(11)
_cell_measurement_reflns_used    28883
_cell_measurement_temperature    193
_cell_measurement_theta_max      68.2
_cell_measurement_theta_min      4.2
_cell_volume                     1636.49(16)
_computing_cell_refinement       PROCESS-AUTO
_computing_data_collection       PROCESS-AUTO
_computing_data_reduction        CrystalStructure
_computing_molecular_graphics
'ORTEP-3 for Windows Ver. 1.076 (Farrugia, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR92
_diffrn_ambient_temperature      193
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.0214
_diffrn_reflns_av_sigmaI/netI    0.0129
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            30897
_diffrn_reflns_theta_full        68.20
_diffrn_reflns_theta_max         68.20
_diffrn_reflns_theta_min         4.21
_exptl_absorpt_coefficient_mu    0.773
_exptl_absorpt_correction_T_max  0.992
_exptl_absorpt_correction_T_min  0.863
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
    Higashi, T. (1995). Program for Absorption Correction.
    Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.300
_exptl_crystal_description       platelet
_exptl_crystal_F_000             688
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.123
_refine_diff_density_min         -0.140
_refine_diff_density_rms         0.032
_refine_ls_abs_structure_details
'Flack, H. D. (1983), Acta Cryst. A39, 876-881.  1253 Friedel Pairs'
_refine_ls_abs_structure_Flack   -0.03(18)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.105
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     210
_refine_ls_number_reflns         2994
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.105
_refine_ls_R_factor_all          0.0358
_refine_ls_R_factor_gt           0.0322
_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^)+(0.0431P)^2^+0.2138P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0806
_refine_ls_wR_factor_ref         0.0839
_reflns_number_gt                2746
_reflns_number_total             2994
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja0679127si20061106_020435.cif
_cod_data_source_block           I
_cod_database_code               4109080