Copper-Catalyzed Activation of α-Amino Peroxy and Hydroxy Intermediates to Iminium Ion Precursor: An Access to C4-Substituted 3,4-Dihydroquinazolines via Oxidative Cross Coupling Strategy
R. Arun Kumar; G. Saidulu; Balasubramanian Sridhar; Shiuh Tzung Liu; K. Rajender Reddy; Journal of Organic Chemistry 78 (2013) 10240–10250; doi:10.1021/jo401622r

data_4028665
_publ_section_title
;
 Copper-Catalyzed Activation of \a-Amino Peroxy and Hydroxy Intermediates
 to Iminium Ion Precursor: An Access to C4-Substituted
 3,4-Dihydroquinazolines via Oxidative Cross Coupling Strategy
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              10240
_journal_page_last               10250
_journal_paper_doi               10.1021/jo401622r
_journal_volume                  78
_journal_year                    2013
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C28 H20 N4 O2, 2(C H Cl3)'
_chemical_formula_sum            'C30 H22 Cl6 N4 O2'
_chemical_formula_weight         683.22
_chemical_name_systematic
; 
4-(5-nitro-1H-indol-3-yl)-2,3-diphenyl-3,4-dihydroquinazoline
;
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.7756(7)
_cell_length_b                   14.3426(8)
_cell_length_c                   18.5462(11)
_cell_measurement_reflns_used    5829
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      20.72
_cell_measurement_theta_min      2.20
_cell_volume                     3132.3(3)
_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  0.0366
_diffrn_reflns_av_sigmaI/netI    0.0281
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            28563
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.42
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.584
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.449
_exptl_crystal_description       needle
_exptl_crystal_F_000             1392
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.502
_refine_diff_density_min         -0.448
_refine_diff_density_rms         0.070
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.01(15)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     383
_refine_ls_number_reflns         5504
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0939
_refine_ls_R_factor_gt           0.0797
_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^)+(0.1432P)^2^+2.5163P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2195
_refine_ls_wR_factor_ref         0.2342
_reflns_number_gt                4477
_reflns_number_total             5504
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo401622r_si_002_2.cif
_cod_data_source_block           9F
_cod_database_code               4028665