Copper-Catalyzed [2 + 3] Cyclization of α-Hydroxyl Ketones and Arylacetonitriles: Access to Multisubstituted Butenolides and Oxazoles.
Qi, Chaorong; Peng, Youbin; Wang, Lu; Ren, Yanwei; Jiang, Huanfeng; The Journal of organic chemistry 83 (2018) 11926–11935; doi:10.1021/acs.joc.8b01822

data_4035284
_publ_section_title
;
 Copper-Catalyzed [2 + 3] Cyclization of \a-Hydroxyl Ketones and
 Arylacetonitriles: Access to Multisubstituted Butenolides and Oxazoles.
;
_journal_issue                   19
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              11926
_journal_page_last               11935
_journal_paper_doi               10.1021/acs.joc.8b01822
_journal_volume                  83
_journal_year                    2018
_chemical_formula_sum            'C18 H15 Br O2'
_chemical_formula_weight         343.21
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_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                107.87(3)
_cell_angle_beta                 104.21(3)
_cell_angle_gamma                109.44(3)
_cell_formula_units_Z            2
_cell_length_a                   9.2983(19)
_cell_length_b                   9.5365(19)
_cell_length_c                   10.425(2)
_cell_measurement_reflns_used    3834
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      55.07
_cell_measurement_theta_min      6.81
_cell_volume                     764.9(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  Rigaku
_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  0.0347
_diffrn_reflns_av_sigmaI/netI    0.0491
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            7123
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.41
_exptl_absorpt_coefficient_mu    2.688
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.490
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             348
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.569
_refine_diff_density_min         -0.642
_refine_diff_density_rms         0.202
_refine_ls_extinction_coef       0.030(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.005
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     191
_refine_ls_number_reflns         3437
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.005
_refine_ls_R_factor_all          0.0880
_refine_ls_R_factor_gt           0.0558
_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^)+(0.1167P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1499
_refine_ls_wR_factor_ref         0.1873
_reflns_number_gt                2204
_reflns_number_total             3437
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo8b01822_si_002.cif
_cod_data_source_block           peng
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Triclinic' was changed to
'triclinic' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/current/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 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        764.9(3)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4035284