Divergent access to N-hydroxypyrroles and isoxazoles via the gold(i)- or Brønsted acid-catalysed regioselective cyclization of N-(2-trifluoromethyl-3-alkynyl) oximes.
Zeng, Qin; Zhang, Li; Xiao, Yuanjing; Zhang, Junliang; Organic & biomolecular chemistry 16 (2018) 1375–1380; doi:10.1039/c7ob03107f

data_7156083
_publ_section_title
;
 Divergent access to N-hydroxypyrroles and isoxazoles via the gold(i)- or
 Br\/onsted acid-catalysed regioselective cyclization of
 N-(2-trifluoromethyl-3-alkynyl) oximes.
;
_journal_issue                   8
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              1375
_journal_page_last               1380
_journal_paper_doi               10.1039/c7ob03107f
_journal_volume                  16
_journal_year                    2018
_chemical_formula_sum            'C12 H7 F3 N2 O'
_chemical_formula_weight         252.20
_chemical_name_systematic
4-((4-(trifluoromethyl)isoxazol-5-yl)methyl)benzonitrile
_space_group_IT_number           13
_space_group_name_Hall           '-P 2yc'
_space_group_name_H-M_alt        'P 1 2/c 1'
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_symmetry_space_group_name_Hall  '-P 2yc'
_symmetry_space_group_name_H-M   'P 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-09-17 deposited with the CCDC.
2018-01-29 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 134.705(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   14.0956(5)
_cell_length_b                   11.3444(4)
_cell_length_c                   19.9859(5)
_cell_measurement_temperature    173(2)
_cell_volume                     2271.42(15)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
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_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            26030
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         1.80
_exptl_absorpt_coefficient_mu    0.130
_exptl_absorpt_correction_T_max  0.9733
_exptl_absorpt_correction_T_min  0.9475
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.475
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1024
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: DCM/Hexane'
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.21
_refine_diff_density_max         0.182
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_refine_ls_extinction_method     none
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_refine_ls_number_parameters     379
_refine_ls_number_reflns         4010
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_refine_ls_R_factor_all          0.0472
_refine_ls_R_factor_gt           0.0343
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0315P)^2^+0.8660P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0783
_refine_ls_wR_factor_ref         0.0862
_reflns_number_gt                3199
_reflns_number_total             4010
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7ob03107f2.cif
_cod_data_source_block           z_CCDC1
_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/RSC/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 7156082--7156083.cif.
;
_cod_original_cell_volume        2271.42(13)
_cod_original_sg_symbol_H-M      P2/c
_cod_database_code               7156083