Three-component synthesis of fluorinated pyrazoles from fluoroalkylamines, NaNO2 and electron-deficient alkynes.
Mykhailiuk, Pavel K.; Organic & biomolecular chemistry 13 (2015) 3438–3445; doi:10.1039/c4ob02670e

data_7154314
_publ_section_title
;
 Three-component synthesis of fluorinated pyrazoles from
 fluoroalkylamines, NaNO2 and electron-deficient alkynes.
;
_journal_issue                   11
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              3438
_journal_page_last               3445
_journal_paper_doi               10.1039/c4ob02670e
_journal_volume                  13
_journal_year                    2015
_chemical_formula_sum            'C4 H5 F2 N O2'
_chemical_formula_weight         137.09
_space_group_IT_number           14
_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_block_doi                 10.5517/cc13s5sv
_audit_creation_method           SHELXL-97
_audit_update_record
;
2014-11-26 deposited with the CCDC.
2015-01-23 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 96.537(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.2697(8)
_cell_length_b                   5.3382(5)
_cell_length_c                   10.8156(8)
_cell_measurement_temperature    293(2)
_cell_volume                     531.71(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_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  0.0489
_diffrn_reflns_av_sigmaI/netI    0.0390
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            4460
_diffrn_reflns_theta_full        29.99
_diffrn_reflns_theta_max         29.99
_diffrn_reflns_theta_min         3.79
_exptl_absorpt_coefficient_mu    0.178
_exptl_absorpt_correction_T_max  0.9912
_exptl_absorpt_correction_T_min  0.9653
_exptl_crystal_density_diffrn    1.713
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             280
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.288
_refine_diff_density_min         -0.216
_refine_diff_density_rms         0.056
_refine_ls_extinction_coef       0.018(12)
_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   1.011
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     103
_refine_ls_number_reflns         1538
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.011
_refine_ls_R_factor_all          0.0680
_refine_ls_R_factor_gt           0.0496
_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^)+(0.0871P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1336
_refine_ls_wR_factor_ref         0.1524
_reflns_number_gt                1080
_reflns_number_total             1538
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ob02670e2.cif
_cod_data_source_block           tolm226
_cod_depositor_comments
'Adding full bibliography for 7154310--7154316.cif.'
_cod_database_code               7154314