Ring-opening hydrolysis of spiro-epoxyoxindoles using a reusable sulfonic acid functionalized nitrogen rich carbon catalyst
Patel, Parth; Tak, Raj Kumar; Parmar, Bhavesh; Dabas, Shilpa; Patel, Brijesh; Suresh, Eringathodi; Khan, Noor-ul H.; Subramanian, Saravanan; RSC Advances 11 (2021) 12808–12814; doi:10.1039/D1RA01161H

data_7242589
_publ_section_title
;
 Ring-opening hydrolysis of spiro-epoxyoxindoles using a reusable sulfonic
 acid functionalized nitrogen rich carbon catalyst
;
_journal_issue                   21
_journal_name_full               'RSC Advances'
_journal_page_first              12808
_journal_page_last               12814
_journal_paper_doi               10.1039/D1RA01161H
_journal_volume                  11
_journal_year                    2021
_chemical_formula_sum            'C17 H17 N O4'
_chemical_formula_weight         299.31
_chemical_name_common            ORGANIC
_space_group_crystal_system      monoclinic
_space_group_IT_number           7
_space_group_name_Hall           'P -2yc'
_space_group_name_H-M_alt        'P 1 c 1'
_atom_sites_solution_hydrogens   mixed
_audit_update_record
;
2019-10-24 deposited with the CCDC.	2021-03-15 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 97.420(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.4593(5)
_cell_length_b                   5.8691(4)
_cell_length_c                   30.718(2)
_cell_measurement_reflns_used    8889
_cell_measurement_temperature    305.(2)
_cell_measurement_theta_max      24.0465
_cell_measurement_theta_min      2.4337
_cell_volume                     1512.33(17)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      305.(2)
_diffrn_detector_area_resol_mean 7.3910
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker D8 QUEST'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0419
_diffrn_reflns_av_unetI/netI     0.0409
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            22546
_diffrn_reflns_theta_full        26.36
_diffrn_reflns_theta_max         26.36
_diffrn_reflns_theta_min         2.43
_diffrn_source_type              'MICRO FOCUS TUBE'
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.9900
_exptl_absorpt_correction_T_min  0.9450
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'BRUKER SADABS'
_exptl_crystal_colour            'light yellow'
_exptl_crystal_density_diffrn    1.315
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       ROD
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.607
_exptl_crystal_size_mid          0.403
_exptl_crystal_size_min          0.106
_refine_diff_density_max         0.237
_refine_diff_density_min         -0.175
_refine_ls_abs_structure_details
;

Flack x determined using 1798 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.4(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     469
_refine_ls_number_reflns         5901
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0661
_refine_ls_R_factor_gt           0.0511
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0788P)^2^+0.2273P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1309
_refine_ls_wR_factor_ref         0.1430
_reflns_number_gt                4746
_reflns_number_total             5901
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1ra01161h2.cif
_cod_data_source_block           2E
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'MULTI SCAN' was
changed to 'multi-scan' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
;
_cod_original_cell_volume        1512.33(18)
_cod_database_code               7242589
_shelx_res_checksum              22224