Palladium-Catalyzed Cyclization of Alkynoic Acids To Form Vinyl Dioxanones Bearing a Quaternary Allylic Carbon.
Ogiwara, Yohei; Sato, Kazuya; Sakai, Norio; Organic letters 19 (2017) 5296–5299; doi:10.1021/acs.orglett.7b02572

data_1547235
_publ_section_title
;
 Palladium-Catalyzed Cyclization of Alkynoic Acids To Form Vinyl
 Dioxanones Bearing a Quaternary Allylic Carbon.
;
_journal_issue                   19
_journal_name_full               'Organic letters'
_journal_page_first              5296
_journal_page_last               5299
_journal_paper_doi               10.1021/acs.orglett.7b02572
_journal_volume                  19
_journal_year                    2017
_chemical_formula_sum            'C15 H12 O3'
_chemical_formula_weight         240.25
_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                 93.7990(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.0887(6)
_cell_length_b                   6.4489(5)
_cell_length_c                   22.5011(17)
_cell_measurement_reflns_used    3740
_cell_measurement_temperature    103
_cell_measurement_theta_max      25.02
_cell_measurement_theta_min      2.52
_cell_volume                     1171.15(15)
_computing_cell_refinement       'SMART (Bruker AXS)'
_computing_data_collection       'SMART (Bruker AXS)'
_computing_data_reduction        'SAINT (Bruker AXS)'
_computing_molecular_graphics    'XSHEL (Bruker AXS,2002)'
_computing_publication_material  'XCIF (Bruker AXS, 2001)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      103
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX 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  0.0444
_diffrn_reflns_av_sigmaI/netI    0.0336
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            5764
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         1.81
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  0.9859
_exptl_absorpt_correction_T_min  0.9631
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
SADABS Sheldrick 1996
;
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.363
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             504
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.318
_refine_diff_density_min         -0.259
_refine_diff_density_rms         0.057
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.086
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     164
_refine_ls_number_reflns         2065
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.086
_refine_ls_R_factor_all          0.0444
_refine_ls_R_factor_gt           0.0425
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0564P)^2^+0.3839P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1119
_refine_ls_wR_factor_ref         0.1136
_reflns_number_gt                1931
_reflns_number_total             2065
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol7b02572_si_001.cif
_cod_data_source_block           0246hma
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 

 Adding full bibliography for 1547235.cif.
;
_cod_original_sg_symbol_H-M      'P21/c '
_cod_database_code               1547235