Synthesis of Diastereoenriched 1-Indanones via Double-Base Cooperatively Promoted 1,4-<i>Oxo</i>-Migration/Cyclization of β-Alkynyl Ketones.
Shi, Hao-Nan; Huang, Min-Hua; Hao, Wen-Juan; Tu, Xing-Chao; Tu, Shu-Jiang; Jiang, Bo; The Journal of organic chemistry  (2019) –; doi:10.1021/acs.joc.9b02525

data_4037644
_publ_section_title
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 Synthesis of Diastereoenriched 1-Indanones via Double-Base Cooperatively
 Promoted 1,4-<i>Oxo</i>-Migration/Cyclization of \b-Alkynyl Ketones.
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_journal_name_full               'The Journal of organic chemistry'
_journal_paper_doi               10.1021/acs.joc.9b02525
_journal_year                    2019
_chemical_formula_sum            'C20 H17 N O'
_chemical_formula_weight         287.35
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   10.8374(9)
_cell_length_b                   15.4836(13)
_cell_length_c                   18.6142(15)
_cell_measurement_reflns_used    2130
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      20.446
_cell_measurement_theta_min      2.542
_cell_volume                     3123.5(4)
_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      298(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0630
_diffrn_reflns_av_sigmaI/netI    0.1254
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            14838
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         2.54
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  0.9837
_exptl_absorpt_correction_T_min  0.9779
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.222
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1216
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.266
_refine_diff_density_min         -0.159
_refine_diff_density_rms         0.036
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     254
_refine_ls_number_reflns         2756
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.1343
_refine_ls_R_factor_gt           0.0553
_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^)+(0.0001P)^2^+1.1693P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1519
_refine_ls_wR_factor_ref         0.1961
_reflns_number_gt                1327
_reflns_number_total             2756
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo9b02525_si_002.cif
_cod_data_source_block           171014b
_cod_depositor_comments
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The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
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_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               4037644