Synthesis of penta- and tetra-cyclic cage-like compounds and dispiro heterocycles through microwave-assisted solvent-free multi-component domino reactions
Seeni, Maharani; Vivek Kumar, Sundaravel; Almansour, Abdulrahman Ibrahim; Kumar, Raju; K, Anitha; Raju, Ranjith Kumar; New J. Chem. 41 (2017) 11009–11015; doi:10.1039/C7NJ01673E

data_7056542
_publ_section_title
;
 Synthesis of penta- and tetra-cyclic cage-like compounds and dispiro
 heterocycles through microwave-assisted solvent-free multi-component
 domino reactions
;
_journal_issue                   19
_journal_name_full               'New J. Chem.'
_journal_page_first              11009
_journal_page_last               11015
_journal_paper_doi               10.1039/C7NJ01673E
_journal_volume                  41
_journal_year                    2017
_chemical_formula_moiety         'C20 H23 N O3'
_chemical_formula_sum            'C20 H23 N O3'
_chemical_formula_weight         325.39
_chemical_melting_point          446
_chemical_name_systematic
1'-Methyldispiro[cyclooctane-1,3'-pyrrolidine-2',2''-indene]-1'',2,3''-trione
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-02-10 deposited with the CCDC.
2017-08-22 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 111.31(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.798(4)
_cell_length_b                   23.059(3)
_cell_length_c                   9.942(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      2
_cell_volume                     1665.5(10)
_computing_cell_refinement       'CAD4 Express (Enraf Nonius, (1994)'
_computing_data_collection       'CAD4 Express (Enraf Nonius, (1994)'
_computing_data_reduction        'XCAD4 (Harms & Wocadlo, 1996)'
_computing_molecular_graphics    'PLATON (Spek, 2009)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  MACH3-Nonius
_diffrn_measurement_method       \w-2\q
_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  0.0164
_diffrn_reflns_av_sigmaI/netI    0.0565
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            3347
_diffrn_reflns_theta_full        24.98
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.38
_diffrn_standards_decay_%        0
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_T_max  0.9890
_exptl_absorpt_correction_T_min  0.9840
_exptl_absorpt_correction_type   psi-scan
_exptl_absorpt_process_details   '(North et al., 1968)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.298
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             696
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.487
_refine_diff_density_min         -0.566
_refine_diff_density_rms         0.118
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     219
_refine_ls_number_reflns         2611
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0364
_refine_ls_R_factor_gt           0.0311
_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^)+(0.0618P)^2^+0.2249P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0803
_refine_ls_wR_factor_ref         0.0921
_reflns_number_gt                1930
_reflns_number_total             2611
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7nj01673e2.cif
_cod_data_source_block           vnat
_cod_original_cell_volume        1665.4(10)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7056542