Unprecedented formation of 2-oxaspiro[bicyclo[2.2.1]heptane-6,3'-indoline] derivatives from reaction of 3-phenacyalideneoxindole with malononitrile or ethyl cyanoacetate
Xie, Ya-Jing; Sun, Jing; Yan, Chao Guo; RSC Adv.  (2014) –; doi:10.1039/C4RA06272H

data_7218113
_publ_section_title
;
 Unprecedented formation of
 2-oxaspiro[bicyclo[2.2.1]heptane-6,3'-indoline] derivatives from reaction
 of 3-phenacyalideneoxindole with malononitrile or ethyl cyanoacetate
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C4RA06272H
_journal_year                    2014
_chemical_formula_moiety         'C22 H19 N3 O3'
_chemical_formula_sum            'C22 H19 N3 O3'
_chemical_formula_weight         373.40
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                95.648(3)
_cell_angle_beta                 102.202(3)
_cell_angle_gamma                112.343(3)
_cell_formula_units_Z            4
_cell_length_a                   9.5200(11)
_cell_length_b                   11.3170(12)
_cell_length_c                   20.585(2)
_cell_measurement_reflns_used    7682
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      24.62
_cell_measurement_theta_min      2.34
_cell_volume                     1965.4(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0557
_diffrn_reflns_av_sigmaI/netI    0.0705
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            31862
_diffrn_reflns_theta_full        27.63
_diffrn_reflns_theta_max         27.63
_diffrn_reflns_theta_min         1.03
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_T_max  0.985
_exptl_absorpt_correction_T_min  0.972
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_density_diffrn    1.262
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             784
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.723
_refine_diff_density_min         -0.471
_refine_diff_density_rms         0.060
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.017
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     507
_refine_ls_number_reflns         9070
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.017
_refine_ls_R_factor_all          0.1682
_refine_ls_R_factor_gt           0.0806
_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^)+(0.0933P)^2^+1.0564P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1887
_refine_ls_wR_factor_ref         0.2298
_reflns_number_gt                4582
_reflns_number_total             9155
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ra06272h3.cif
_cod_data_source_block           2
_cod_database_code               7218113