Double Isocyanide Cyclization: A Synthetic Strategy for Two-Carbon-Tethered Pyrrole/Oxazole Pairs
Yifei Li; Xianxiu Xu; Jing Tan; Chunyu Xia; Dawei Zhang; Qun Liu; Journal of the American Chemical Society 133 (2011) 1775–1777; doi:10.1021/ja110864t

data_4105644
_publ_section_title
;
 Double Isocyanide Cyclization: A Synthetic Strategy for
 Two-Carbon-Tethered Pyrrole/Oxazole Pairs
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1775
_journal_page_last               1777
_journal_paper_doi               10.1021/ja110864t
_journal_volume                  133
_journal_year                    2011
_chemical_formula_sum            'C72 H90 N6 O12 S6'
_chemical_formula_weight         1423.86
_space_group_IT_number           148
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  '-R 3'
_symmetry_space_group_name_H-M   'R -3 :H'
_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                120.00
_cell_formula_units_Z            6
_cell_length_a                   19.425(4)
_cell_length_b                   19.425(4)
_cell_length_c                   33.628(4)
_cell_measurement_temperature    293(2)
_cell_volume                     10989(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.998
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.1172
_diffrn_reflns_av_sigmaI/netI    0.1150
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            18636
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.10
_diffrn_reflns_theta_min         1.35
_exptl_absorpt_coefficient_mu    0.250
_exptl_absorpt_correction_T_max  0.9754
_exptl_absorpt_correction_T_min  0.9378
_exptl_crystal_density_diffrn    1.291
_exptl_crystal_F_000             4536
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.309
_refine_diff_density_min         -0.236
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.935
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     312
_refine_ls_number_reflns         4343
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.935
_refine_ls_R_factor_all          0.1482
_refine_ls_R_factor_gt           0.0547
_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^)+(0.0562P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1060
_refine_ls_wR_factor_ref         0.1349
_reflns_number_gt                2046
_reflns_number_total             4343
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja110864t_si_003.cif
_cod_data_source_block           11
_cod_original_sg_symbol_H-M      'R -3'
_cod_database_code               4105644