Au(I)-Catalyzed Cascade Reaction Involving Formal Double Hydroamination of Alkynes Bearing Tethered Carboxylic Groups: An Easy Access to Fused Dihydrobenzimidazoles and Tetrahydroquinazolines
Nitin T. Patil; Anil Kumar Mutyala; Pediredla G. V. V. Lakshmi; Balakrishna Gajula; Balasubramanian Sridhar; Gurava Reddy Pottireddygari; Tadikamalla Prabhakar Rao; Journal of Organic Chemistry 75 (2010) 5963–5975; doi:10.1021/jo1013228

data_4025660
_publ_section_title
;
 Au(I)-Catalyzed Cascade Reaction Involving Formal Double Hydroamination
 of Alkynes Bearing Tethered Carboxylic Groups: An Easy Access to Fused
 Dihydrobenzimidazoles and Tetrahydroquinazolines
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5963
_journal_page_last               5975
_journal_paper_doi               10.1021/jo1013228
_journal_volume                  75
_journal_year                    2010
_chemical_formula_moiety         'C12 H13 F N2 O'
_chemical_formula_sum            'C12 H13 F N2 O'
_chemical_formula_weight         220.24
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 100.007(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.5422(4)
_cell_length_b                   17.2499(10)
_cell_length_c                   9.8157(6)
_cell_measurement_reflns_used    7348
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      28.00
_cell_measurement_theta_min      2.36
_cell_volume                     1090.87(11)
_computing_cell_refinement       'SAINT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL/PC (Sheldrick, 1990)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       'Bruker SMART APEX CCD area-detector'
_diffrn_measurement_device_type  'CCD Area Detector'
_diffrn_measurement_method       '\w scan'
_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  0.0195
_diffrn_reflns_av_sigmaI/netI    0.0140
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            10284
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.36
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.099
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.341
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             464
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.168
_refine_diff_density_min         -0.175
_refine_diff_density_rms         0.039
_refine_ls_extinction_coef       0.048(4)
_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   1.046
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     151
_refine_ls_number_reflns         1920
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0414
_refine_ls_R_factor_gt           0.0393
_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^)+(0.0592P)^2^+0.2133P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1044
_refine_ls_wR_factor_ref         0.1072
_reflns_number_gt                1773
_reflns_number_total             1920
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo1013228_si_001_3.cif
_cod_data_source_block           ah87m
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4025660