Reactivity of epoxy-ynamides with metal halides: nucleophile (Br/Cl/OH)-assisted tandem intramolecular 5-exo-dig or 6-endo-dig cyclisation and AgF2-promoted oxidation
Anitha, Mandala; Shankar, Mallepalli; Kumara Swamy, K. C.; Organic Chemistry Frontiers 6 (2019) 1133–; doi:10.1039/C9QO00027E

data_1554704
_publ_section_title
;
 Reactivity of epoxy-ynamides with metal halides: nucleophile
 (Br/Cl/OH)-assisted tandem intramolecular 5-exo-dig or 6-endo-dig
 cyclisation and AgF2-promoted oxidation
;
_journal_issue                   8
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              1133
_journal_paper_doi               10.1039/C9QO00027E
_journal_volume                  6
_journal_year                    2019
_chemical_formula_sum            'C17 H14 Br3 N O3 S'
_chemical_formula_weight         552.08
_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
_audit_update_record
;
2018-12-15 deposited with the CCDC.	2019-02-21 downloaded from the CCDC.
;
_cell_angle_alpha                95.166(2)
_cell_angle_beta                 94.677(2)
_cell_angle_gamma                97.680(2)
_cell_formula_units_Z            2
_cell_length_a                   6.9458(2)
_cell_length_b                   10.9848(2)
_cell_length_c                   12.6203(4)
_cell_measurement_reflns_used    6234
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.3150
_cell_measurement_theta_min      2.3490
_cell_volume                     946.11(4)
_computing_cell_refinement       'CrysAlisPro 1.171.40.22a (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.40.22a (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.40.22a (Rigaku OD, 2018)'
_computing_molecular_graphics    'SHELXS-97 (Sheldrick, 2008)'
_computing_publication_material  'SHELXS-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 'ACTA 50'
_diffrn_measured_fraction_theta_max 0.934
_diffrn_measurement_device_type
'XtaLAB Synergy, Single source at offset/far, HyPix3000'
_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  0.0630
_diffrn_reflns_av_sigmaI/netI    0.0641
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            12838
_diffrn_reflns_theta_full        'ACTA 50'
_diffrn_reflns_theta_max         27.27
_diffrn_reflns_theta_min         2.36
_exptl_absorpt_coefficient_mu    6.522
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.938
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             536
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent'
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.663
_refine_diff_density_min         -0.792
_refine_diff_density_rms         0.105
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.071
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     226
_refine_ls_number_reflns         3962
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.071
_refine_ls_R_factor_all          0.0809
_refine_ls_R_factor_gt           0.0509
_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^)+(0.0564P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1129
_refine_ls_wR_factor_ref         0.1223
_reflns_number_gt                2801
_reflns_number_total             3962
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c9qo00027e2.cif
_cod_data_source_block           compound8
_cod_database_code               1554704