Highly Diastereoselective One-Pot Synthesis of Spiro{cyclopenta[a]indene-2,2'-indene}diones from 1-Indanones and Aromatic Aldehydes
Pelayo Camps; Luis R. Domingo; Xavier Formosa; Carles Galdeano; Diana González; Diego Muñoz-Torrero; Sílvia Segalés; Mercè Font-Bardia; Xavier Solans; Journal of Organic Chemistry 71 (2006) 3464–3471; doi:10.1021/jo0600095

data_4021655
_publ_section_title
;
 Highly Diastereoselective One-Pot Synthesis of
 Spiro{cyclopenta[a]indene-2,2'-indene}diones from 1-Indanones
 and Aromatic Aldehydes
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              3464
_journal_page_last               3471
_journal_paper_doi               10.1021/jo0600095
_journal_volume                  71
_journal_year                    2006
_chemical_formula_moiety         'C36 H32 O6'
_chemical_formula_sum            'C36 H32 O6'
_chemical_formula_weight         560.62
_chemical_melting_point          277.5(5)
_chemical_name_systematic
;
(1SR,2RS,3RS,3aSR,8aSR)-5,6,5,6-tetramethoxy-1,3-diphenyl-
3a,8a-dihydrospiro{cyclopenta[a]indene-2,2(1H,3H)indene}-1,8(3H)-dione
;
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 106.53(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.904(5)
_cell_length_b                   21.892(11)
_cell_length_c                   11.857(8)
_cell_measurement_reflns_used    29
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      31
_cell_measurement_theta_min      3
_cell_volume                     2962(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.777
_diffrn_measured_fraction_theta_max 0.777
_diffrn_measurement_device_type  'mar345 with a image plate detector'
_diffrn_measurement_method       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  0.0414
_diffrn_reflns_av_sigmaI/netI    0.2350
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       33
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            27884
_diffrn_reflns_theta_full        33.27
_diffrn_reflns_theta_max         33.27
_diffrn_reflns_theta_min         3.52
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.257
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1184
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.134
_refine_diff_density_min         -0.126
_refine_diff_density_rms         0.029
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.811
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     379
_refine_ls_number_reflns         8877
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.811
_refine_ls_R_factor_all          0.3089
_refine_ls_R_factor_gt           0.0519
_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^)+(0.0000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0516
_refine_ls_wR_factor_ref         0.0835
_reflns_number_gt                2478
_reflns_number_total             8877
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo0600095si20060104_111746.cif
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_chemical_melting_point' value '277-278' was changed to '277.5(5)' -
the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4021655