Regioselective Synthesis of Bicyclic and Polycyclic Systems by Cycloaddition Reactions of Alkenyl p-Benzoquinones
Bisht, Shweta; Rani, Rashmi; Peddinti, Rama Krishna; The Journal of Organic Chemistry  (2017) –; doi:10.1021/acs.joc.7b02377

data_4033262
_publ_section_title
;
 Regioselective Synthesis of Bicyclic and Polycyclic Systems by
 Cycloaddition Reactions of Alkenyl p-Benzoquinones
;
_journal_name_full               'The Journal of Organic Chemistry'
_journal_paper_doi               10.1021/acs.joc.7b02377
_journal_year                    2017
_chemical_formula_sum            'C16 H14 O6'
_chemical_formula_weight         302.27
_chemical_melting_point          152
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                84.180(4)
_cell_angle_beta                 73.556(4)
_cell_angle_gamma                74.346(4)
_cell_formula_units_Z            2
_cell_length_a                   8.756(2)
_cell_length_b                   8.879(2)
_cell_length_c                   9.397(2)
_cell_measurement_reflns_used    3442
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.72
_cell_measurement_theta_min      2.26
_cell_volume                     674.4(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.934
_diffrn_measured_fraction_theta_max 0.934
_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  0.0283
_diffrn_reflns_av_sigmaI/netI    0.0313
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            6397
_diffrn_reflns_theta_full        25.84
_diffrn_reflns_theta_max         25.84
_diffrn_reflns_theta_min         2.26
_exptl_absorpt_coefficient_mu    0.115
_exptl_absorpt_correction_T_max  0.9774
_exptl_absorpt_correction_T_min  0.9685
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            pale
_exptl_crystal_density_diffrn    1.489
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             316
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.225
_refine_diff_density_min         -0.229
_refine_diff_density_rms         0.043
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         2431
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0674
_refine_ls_R_factor_gt           0.0547
_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^)+(0.0694P)^2^+0.1694P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1347
_refine_ls_wR_factor_ref         0.1440
_reflns_number_gt                1927
_reflns_number_total             2431
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo7b02377_si_001.cif
_cod_data_source_block           eiitr203
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/home/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 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_sg_symbol_H-M      'P-1   '
_cod_database_code               4033262