Rhodium-catalyzed asymmetric one-pot transesterification and [2 + 2 + 2] cycloaddition leading to enantioenriched 3,3-disubstituted phthalides.
Tanaka, Ken; Osaka, Takuya; Noguchi, Keiichi; Hirano, Masao; Organic letters 9 (2007) 1307–1310; doi:10.1021/ol070179j

data_1556117
_publ_section_title
;
 Rhodium-catalyzed asymmetric one-pot transesterification and [2 + 2 + 2]
 cycloaddition leading to enantioenriched 3,3-disubstituted phthalides.
;
_journal_issue                   7
_journal_name_full               'Organic letters'
_journal_page_first              1307
_journal_page_last               1310
_journal_paper_doi               10.1021/ol070179j
_journal_volume                  9
_journal_year                    2007
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C31 H27 N O4 S'
_chemical_formula_sum            'C31 H27 N O4 S'
_chemical_formula_weight         509.60
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_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             2006-12-22
_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                   10.2528(5)
_cell_length_b                   10.7389(5)
_cell_length_c                   47.533(2)
_cell_measurement_reflns_used    89579
_cell_measurement_temperature    193
_cell_measurement_theta_max      68.3
_cell_measurement_theta_min      3.7
_cell_volume                     5233.6(4)
_computing_cell_refinement       PROCESS-AUTO
_computing_data_collection       PROCESS-AUTO
_computing_data_reduction        CrystalStructure
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR2004
_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  0.0595
_diffrn_reflns_av_sigmaI/netI    0.0391
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       56
_diffrn_reflns_limit_l_min       -57
_diffrn_reflns_number            93468
_diffrn_reflns_theta_full        68.25
_diffrn_reflns_theta_max         68.25
_diffrn_reflns_theta_min         3.72
_exptl_absorpt_coefficient_mu    1.401
_exptl_absorpt_correction_T_max  0.972
_exptl_absorpt_correction_T_min  0.357
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details
;
    Higashi, T. (1999). Program for Absorption Correction.
    Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.293
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       platelet
_exptl_crystal_F_000             2144
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.154
_refine_diff_density_min         -0.420
_refine_diff_density_rms         0.042
_refine_ls_abs_structure_details
'Flack H D (1983), Acta Cryst. A39, 876-881 4171 Friedel Pairs'
_refine_ls_abs_structure_Flack   -0.003(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     673
_refine_ls_number_reflns         9564
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.0439
_refine_ls_R_factor_gt           0.0391
_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^)+(0.0566P)^2^+0.3192P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0985
_refine_ls_wR_factor_ref         0.1026
_reflns_number_gt                8480
_reflns_number_total             9564
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol070179jsi20070124_024943.cif
_cod_data_source_block           global
_cod_depositor_comments
;
 Corrected the value of the '_refine_diff_density_rms' data item
 by removing an ASCII start of heading (SOH) symbol.

 Antanas Vaitkus,
 2019-12-11
;
_cod_database_code               1556117