Synthesis of Enantiopure P-Stereogenic Diphosphacrowns using P-Stereogenic Secondary Phosphines
Yasuhiro Morisaki; Ryosuke Kato; Yoshiki Chujo; Journal of Organic Chemistry 78 (2013) 2769–2774; doi:10.1021/jo302748x

data_4028056
_publ_contact_author_address
;
Department of Polymer Chemistry, Graduate School of Engineering,
Kyoto University,
;
_publ_contact_author_email       ' ymo_at_chujo.synchem.kyoto-u.ac.jp '
_publ_contact_author_fax         ' +81-75-383-2607 '
_publ_contact_author_name        ' Yasuhiro Morisaki '
_publ_contact_author_phone       ' +81-75-383-2610 '
_publ_section_title
;
 Synthesis of Enantiopure P-Stereogenic Diphosphacrowns using
 P-Stereogenic Secondary Phosphines
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              2769
_journal_page_last               2774
_journal_paper_doi               10.1021/jo302748x
_journal_volume                  78
_journal_year                    2013
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C24 H48 B2 O4 P2'
_chemical_formula_sum            'C24 H48 B2 O4 P2'
_chemical_formula_weight         484.18
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.6655(2)
_cell_length_b                   13.8497(4)
_cell_length_c                   30.6661(10)
_cell_measurement_reflns_used    34097
_cell_measurement_temperature    103(2)
_cell_measurement_theta_max      27.49
_cell_measurement_theta_min      3.02
_cell_volume                     2830.95(15)
_computing_cell_refinement       PROCESS-AUTO
_computing_data_collection       PROCESS-AUTO
_computing_data_reduction        'Yadokari-XG (Wakita, 2000)'
_computing_molecular_graphics    'Yadokari-XG (Wakita, 2000)'
_computing_publication_material  'Yadokari-XG (Wakita, 2000)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      103(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'rigaku raxis rapid'
_diffrn_measurement_method       'oscillation method'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0667
_diffrn_reflns_av_sigmaI/netI    0.0435
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       39
_diffrn_reflns_limit_l_min       -39
_diffrn_reflns_number            42385
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.02
_exptl_absorpt_coefficient_mu    0.179
_exptl_absorpt_correction_T_max  0.9650
_exptl_absorpt_correction_T_min  0.9482
_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    1.136
_exptl_crystal_description       chip
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.384
_refine_diff_density_min         -0.691
_refine_diff_density_rms         0.066
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.132
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     297
_refine_ls_number_reflns         6474
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.132
_refine_ls_R_factor_all          0.0535
_refine_ls_R_factor_gt           0.0448
_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^)+(0.0370P)^2^+1.5784P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0940
_refine_ls_wR_factor_ref         0.1085
_reflns_number_gt                5677
_reflns_number_total             6474
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo302748x_si_003.cif
_cod_data_source_block           untitled
_cod_original_sg_symbol_Hall     'p 2ac 2ab'
_cod_database_code               4028056