An eco-friendly synthesis of novel 3,5-disubstituted-1,2-isoxazoles in PEG-400, employing the Et3N-promoted hydroamination of symmetric and unsymmetric 1,3-diyne-indole derivatives
Bassaco, Mariana; Fortes, Margiani de Paula; Back, Davi Fernando; Kaufman, Teodoro; Silveira, Claudio da Cruz; RSC Adv.  (2014) –; doi:10.1039/C4RA11571F

data_7218695
_publ_section_title
;
 An eco-friendly synthesis of novel 3,5-disubstituted-1,2-isoxazoles in
 PEG-400, employing the Et3N-promoted hydroamination of symmetric and
 unsymmetric 1,3-diyne-indole derivatives
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C4RA11571F
_journal_year                    2014
_chemical_formula_moiety         'C22 H16 N2'
_chemical_formula_sum            'C22 H16 N2'
_chemical_formula_weight         308.37
_chemical_melting_point          ?
_chemical_name_common            1,6-di(1H-indol-1-yl)hexa-2,4-diyne
_chemical_name_systematic
;
        1,6-di(1H-indol-1-yl)hexa-2,4-diyne
;
_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_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.3
_audit_creation_date             2014-06-03T15:43:42-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 98.722(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.3639(5)
_cell_length_b                   11.0764(4)
_cell_length_c                   10.2050(4)
_cell_measurement_reflns_used    3731
_cell_measurement_temperature    189(2)
_cell_measurement_theta_max      25.254
_cell_measurement_theta_min      2.731
_cell_volume                     1604.84(10)
_computing_cell_refinement       'BRUKER SANT'
_computing_data_collection       'BRUKER APEX-II'
_computing_data_reduction        'BRUKER SOFTWARE'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 2000)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXL97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      189(2)
_diffrn_detector_area_resol_mean none
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'X8 APEX II'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0424
_diffrn_reflns_av_unetI/netI     0.0361
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            22096
_diffrn_reflns_theta_full        27.33
_diffrn_reflns_theta_max         27.33
_diffrn_reflns_theta_min         1.43
_diffrn_standards_decay_%        none
_diffrn_standards_interval_count none
_diffrn_standards_interval_time  none
_diffrn_standards_number         none
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  0.9918
_exptl_absorpt_correction_T_min  0.9662
_exptl_absorpt_correction_type   gaussian
_exptl_absorpt_process_details   XPREP
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.276
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       tabular
_exptl_crystal_F_000             648
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: MeOH/CH2Cl2'
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.312
_refine_diff_density_min         -0.199
_refine_diff_density_rms         0.039
_refine_ls_extinction_coef       none
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         3573
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0782
_refine_ls_R_factor_gt           0.0465
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0447P)^2^+0.4967P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1035
_refine_ls_wR_factor_ref         0.118
_reflns_number_gt                2423
_reflns_number_total             3573
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ra11571f2.cif
_cod_data_source_block           p21c
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'none' was changed to '?' - the value
is undefined or not given.

Automatic conversion script
Id: cif_fix_values 2827 2014-09-09 07:05:25Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_Hall     -P2ybc
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7218695