Chemistry of 9,10-phenanthrenequinone revisited: iron(iii) chloride catalyzed reactions of 9,10-phenanthrenequinone with acyclic and cyclic ketones provide furan annulated products
Surya Prakash Rao, H.; Vijjapu, Satish; RSC Advances 2 (2012) 6773–; doi:10.1039/c2ra20499a

data_7238640
_publ_section_title
;
 Chemistry of 9,10-phenanthrenequinone revisited: iron(iii) chloride
 catalyzed reactions of 9,10-phenanthrenequinone with acyclic and cyclic
 ketones provide furan annulated products
;
_journal_issue                   17
_journal_name_full               'RSC Advances'
_journal_page_first              6773
_journal_paper_doi               10.1039/c2ra20499a
_journal_volume                  2
_journal_year                    2012
_chemical_formula_moiety         'C20 H18 O3'
_chemical_formula_sum            'C20 H18 O3'
_chemical_formula_weight         306.34
_chemical_name_common
;9a,11,11-Trimethyl-9a,12a-dihydrophenanthro(9',10':4,5)
furo(2,3-d)(1,3)dioxole
;
_chemical_name_systematic
;
9a,11,11-Trimethyl-9a,12a-dihydrophenanthro[9',10':4,5]
furo[2,3-d][1,3]dioxole
;
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.1778(2)
_cell_length_b                   8.9545(3)
_cell_length_c                   21.7298(6)
_cell_measurement_reflns_used    5577
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.2939
_cell_measurement_theta_min      2.6559
_cell_volume                     1591.23(8)
_computing_cell_refinement       'CrysAlis RED (Oxford Diffraction, 2009)'
_computing_data_collection       'CrysAlis CCD (Oxford Diffraction, 2009)'
_computing_data_reduction        'CrysAlis RED (Oxford Diffraction, 2009)'
_computing_molecular_graphics
'<i>ORTEP-3 for Windows</i> (Farrugia, 1997) and PLATON (Spek, 2009)'
_computing_publication_material  '<i>PLATON</i> (Spek, 2009)'
_computing_structure_refinement  '<i>SHELXL97</i> (Sheldrick, 2008)'
_computing_structure_solution    '<i>SHELXS97</i> (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 15.9821
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Xcalibur, Eos'
_diffrn_measurement_method       '\w 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  0.0286
_diffrn_reflns_av_sigmaI/netI    0.0291
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            8728
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         2.66
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.975
_exptl_absorpt_correction_T_min  0.965
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.44 (release 25-10-2010 CrysAlis171 .NET)
(compiled Oct 25 2010,18:11:34)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.279
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             648
_exptl_crystal_size_max          0.55
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.110
_refine_diff_density_min         -0.152
_refine_diff_density_rms         0.030
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.2(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.806
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     211
_refine_ls_number_reflns         2808
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.806
_refine_ls_R_factor_all          0.0450
_refine_ls_R_factor_gt           0.0341
_refine_ls_shift/su_max          0.020
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0997
_refine_ls_wR_factor_ref         0.1092
_reflns_number_gt                2369
_reflns_number_total             2808
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ra20499a.txt
_cod_data_source_block           3a
_cod_database_code               7238640