Ni(ClO4)2-catalysed regio- and diastereoselective [3+2] cycloaddition of indoles and aryl oxiranyl-dicarboxylates/diketones: a facile access to furo[3,4-b]indoles
Jieming Zhang; Zuliang Chen; Hai-Hong Wu; Junliang Zhang; Chem.Commun. 48 (2012) 1817–; doi:10.1039/c2cc16918e

data_7107321
_publ_section_title
;
 Ni(ClO4)2-catalysed regio- and diastereoselective [3+2] cycloaddition of
 indoles and aryl oxiranyl-dicarboxylates/diketones: a facile access to
 furo[3,4-b]indoles
;
_journal_name_full               Chem.Commun.
_journal_page_first              1817
_journal_paper_doi               10.1039/c2cc16918e
_journal_volume                  48
_journal_year                    2012
_chemical_formula_sum            'C23 H25 N O5'
_chemical_formula_weight         395.44
_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                   7.9672(3)
_cell_length_b                   12.0266(5)
_cell_length_c                   21.1513(9)
_cell_measurement_temperature    296(2)
_cell_volume                     2026.68(14)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0194
_diffrn_reflns_av_sigmaI/netI    0.0112
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            23463
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.93
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_T_max  0.9714
_exptl_absorpt_correction_T_min  0.9592
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.296
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.32
_refine_diff_density_max         0.247
_refine_diff_density_min         -0.216
_refine_diff_density_rms         0.049
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.7(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     262
_refine_ls_number_reflns         3584
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0340
_refine_ls_R_factor_gt           0.0336
_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^)+(0.0597P)^2^+0.4657P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0928
_refine_ls_wR_factor_ref         0.0934
_reflns_number_gt                3534
_reflns_number_total             3584
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2cc16918e.txt
_cod_data_source_block           z
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7107321