An uncommon multicomponent reaction involving nucleophilic heterocyclic carbenes: facile synthesis of fully substituted cyclopentanones
Krishnan, Jagadeesh; Jose, Anu; Sasidhar, B. S.; Suresh, E.; Menon, Rajeev S.; Nair, Vijay; Organic Chemistry Frontiers 5 (2018) 1202–; doi:10.1039/C7QO01051F

data_1553958
_publ_section_title
;
 An uncommon multicomponent reaction involving nucleophilic heterocyclic
 carbenes: facile synthesis of fully substituted cyclopentanones
;
_journal_issue                   7
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              1202
_journal_paper_doi               10.1039/C7QO01051F
_journal_volume                  5
_journal_year                    2018
_chemical_formula_sum            'C52 H47 N3 O3'
_chemical_formula_weight         761.93
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-08-10 deposited with the CCDC.
2018-01-11 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 101.393(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.605(3)
_cell_length_b                   13.333(3)
_cell_length_c                   23.507(6)
_cell_measurement_reflns_used    1741
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      24.66
_cell_measurement_theta_min      2.22
_cell_volume                     4180.0(17)
_computing_cell_refinement       'BRUKER SMART'
_computing_data_collection       'BRUKER SMART'
_computing_data_reduction        'BRUKER SAINT'
_computing_molecular_graphics    ORTEP
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'BRUKER SMART APEX CCD DIFFRACTOMETER'
_diffrn_measurement_method       'OMEGA-PHI SCAN'
_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  0.0958
_diffrn_reflns_av_sigmaI/netI    0.1437
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            17563
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.61
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  0.9978
_exptl_absorpt_correction_T_min  0.9874
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'BRUKER SADABS'
_exptl_crystal_colour            COLOURLESS
_exptl_crystal_density_diffrn    1.211
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       PLATES
_exptl_crystal_F_000             1616
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.216
_refine_diff_density_min         -0.225
_refine_diff_density_rms         0.050
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.999
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     533
_refine_ls_number_reflns         7310
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.999
_refine_ls_R_factor_all          0.1650
_refine_ls_R_factor_gt           0.0784
_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^)+(0.0566P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1391
_refine_ls_wR_factor_ref         0.1724
_reflns_number_gt                3754
_reflns_number_total             7310
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7qo01051f2.cif
_cod_data_source_block           786jdkm
_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/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

data item '_symmetry_cell_setting' value 'MONOCLINIC' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/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 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        4180.0(18)
_cod_original_sg_symbol_H-M      P21/n
_cod_database_code               1553958