Pseudo five component reaction towards densely functionalized spiro[indole-3,2'-pyrrole] by picric acid, an efficient syn-diastereoselective catalyst: insight into the diastereoselection on C(sp<sup>3</sup>)-C(sp<sup>3</sup>) axial conformation.
Sengupta, Ayon; Maity, Suvendu; Mondal, Animesh; Ghosh, Prasanta; Rudra, Sonali; Mukhopadhyay, Chhanda; Organic & biomolecular chemistry 17 (2019) 1254–1265; doi:10.1039/c8ob02849d

data_7156647
_publ_section_title
;
 Pseudo five component reaction towards densely functionalized
 spiro[indole-3,2'-pyrrole] by picric acid, an efficient
 syn-diastereoselective catalyst: insight into the diastereoselection on
 C(sp<sup>3</sup>)-C(sp<sup>3</sup>) axial conformation.
;
_journal_issue                   5
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              1254
_journal_page_last               1265
_journal_paper_doi               10.1039/c8ob02849d
_journal_volume                  17
_journal_year                    2019
_chemical_formula_moiety         'C43 H48 N4 O5'
_chemical_formula_sum            'C43 H48 N4 O5'
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_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
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_audit_update_record
;
2018-05-30 deposited with the CCDC.
2019-01-10 downloaded from the CCDC.
;
_cell_angle_alpha                90
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_cell_measurement_theta_max      22.11
_cell_measurement_theta_min      2.70
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_computing_publication_material  'Bruker SHELXTL'
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_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
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_diffrn_reflns_limit_k_min       -25
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_refine_ls_extinction_method     none
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_refine_ls_restrained_S_all      1.007
_refine_ls_R_factor_all          0.1740
_refine_ls_R_factor_gt           0.0674
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_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
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'w=1/[\s^2^(Fo^2^)+(0.0653P)^2^+1.8426P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1357
_refine_ls_wR_factor_ref         0.1786
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3776
_reflns_number_total             8009
_reflns_threshold_expression     'I > 2\s(I)'
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_cod_depositor_comments
'Adding full bibliography for 7156645--7156647.cif.'
_cod_database_code               7156647
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