Yb(OTf)3 catalysed regioselective synthesis of unusual di- and tri- substituted 3,4-dihydrothiochromeno[3,2-e][1,3]thiazin-5(2H)-one derivatives through a pseudo four-component hetero-Diels-Alder Reaction
Khan, Abu Taleb; Mahato, Karuna; Ray Bagdi, Prasanta; RSC Adv.  (2015) –; doi:10.1039/C5RA06905J

data_7220428
_publ_section_title
;
 Yb(OTf)3 catalysed regioselective synthesis of unusual di- and tri-
 substituted 3,4-dihydrothiochromeno[3,2-e][1,3]thiazin-5(2H)-one
 derivatives through a pseudo four-component hetero-Diels-Alder Reaction
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C5RA06905J
_journal_year                    2015
_chemical_formula_moiety         'C32 H27 N O S2'
_chemical_formula_sum            'C32 H27 N O S2'
_chemical_formula_weight         505.67
_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
;
2014-10-20 deposited with the CCDC.
2015-05-08 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 101.788(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.6518(3)
_cell_length_b                   15.2049(4)
_cell_length_c                   14.9453(4)
_cell_measurement_temperature    296(2)
_cell_volume                     2591.93(12)
_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 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0367
_diffrn_reflns_av_sigmaI/netI    0.0194
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            30030
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         1.79
_exptl_absorpt_coefficient_mu    0.232
_exptl_absorpt_correction_T_max  0.977
_exptl_absorpt_correction_T_min  0.946
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1997)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.30
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             1064.0
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent: EtOH'
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.203
_refine_diff_density_min         -0.146
_refine_diff_density_rms         0.034
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.080
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     327
_refine_ls_number_reflns         4580
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.0505
_refine_ls_R_factor_gt           0.0394
_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^)+(0.1000P)^2^+0.1000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1335
_refine_ls_wR_factor_ref         0.1438
_reflns_number_gt                2946
_reflns_number_total             4580
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5ra06905j2.cif
_cod_data_source_block           maa
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3271 2015-04-21 07:52:19Z andrius 
;
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7220428