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_4025659
_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 H14 N2 O'
_chemical_formula_sum            'C12 H14 N2 O'
_chemical_formula_weight         202.25
_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                 99.0880(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.2069(5)
_cell_length_b                   12.8071(9)
_cell_length_c                   11.4143(8)
_cell_measurement_reflns_used    5670
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      27.92
_cell_measurement_theta_min      2.41
_cell_volume                     1040.31(13)
_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 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0173
_diffrn_reflns_av_sigmaI/netI    0.0121
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            9751
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.41
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.291
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             432
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.156
_refine_diff_density_min         -0.138
_refine_diff_density_rms         0.030
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     141
_refine_ls_number_reflns         1837
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0391
_refine_ls_R_factor_gt           0.0359
_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^)+(0.0500P)^2^+0.2261P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0968
_refine_ls_wR_factor_ref         0.0996
_reflns_number_gt                1671
_reflns_number_total             1837
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo1013228_si_001_2.cif
_cod_data_source_block           ah58m
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4025659