Diels-Alder Reaction of 1,3-Diarylbenzo[c]furans with Thiophene S,S-Dioxide/Indenone Derivatives: A Facile Preparation of Substituted Dibenzothiophene S,S-Dioxides and Fluorenones.
Nandakumar, Meganathan; Karunakaran, Jayachandran; Mohanakrishnan, Arasambattu K.; Organic letters 16 (2014) 3068–3071; doi:10.1021/ol501175q

data_1516238
_publ_section_title
;
 Diels-Alder Reaction of 1,3-Diarylbenzo[c]furans with Thiophene
 S,S-Dioxide/Indenone Derivatives: A Facile Preparation of Substituted
 Dibenzothiophene S,S-Dioxides and Fluorenones.
;
_journal_issue                   11
_journal_name_full               'Organic letters'
_journal_page_first              3068
_journal_page_last               3071
_journal_paper_doi               10.1021/ol501175q
_journal_volume                  16
_journal_year                    2014
_chemical_formula_moiety         'C28 H18 O2 S'
_chemical_formula_sum            'C28 H18 O2 S'
_chemical_formula_weight         418.48
_chemical_name_systematic
;
2,9-diphenyl-17$^6^thiatetracyclo[8.7.0^3,8^.0^11,16^]
heptadeca-1,3,5,7,9,11(16),12,14-octane-17,17-dione
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 100.3080(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.9374(2)
_cell_length_b                   16.1534(4)
_cell_length_c                   13.0530(3)
_cell_measurement_reflns_used    8954
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      35.06
_cell_measurement_theta_min      2.03
_cell_volume                     2061.49(8)
_computing_cell_refinement       APEX2
_computing_data_collection       'APEX2 (Bruker, 2008)'
_computing_data_reduction        'SAINT (Bruker, 2008)'
_computing_molecular_graphics    'ORTEP3 (Farrugia, 1997)'
_computing_publication_material
'SHELXL-97 (Sheldrick, 2008) and  PLATON  (Spek, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Bruker Axs Kappa ApexII CCD diffractometer'
_diffrn_measurement_method       '\w & \f 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  0.0282
_diffrn_reflns_av_sigmaI/netI    0.0431
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            30687
_diffrn_reflns_theta_full        35.06
_diffrn_reflns_theta_max         35.06
_diffrn_reflns_theta_min         2.03
_exptl_absorpt_coefficient_mu    0.180
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.348
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             872
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.365
_refine_diff_density_min         -0.373
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         8954
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.1043
_refine_ls_R_factor_gt           0.0541
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0825P)^2^+0.2784P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1415
_refine_ls_wR_factor_ref         0.1689
_reflns_number_gt                5246
_reflns_number_total             8954
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol501175q_si_002.cif
_cod_data_source_block           final
_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/ACS/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 2281 2013-09-26 08:29:07Z andrius 

 Adding full bibliography for 1516236--1516238.cif.
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               1516238