Visible Light Photoredox Catalysis: Synthesis of Indazolo[2,3-a]quinolines from 2-(2-Nitrophenyl)-1,2,3,4-tetrahydroquinolines
Lin, Wen-Chung; Yang, Ding-Yah; Organic Letters 15 (2013) 4862–; doi:10.1021/ol402286d

data_1512357
_publ_section_title
;
 Visible Light Photoredox Catalysis: Synthesis of
 Indazolo[2,3-a]quinolines from
 2-(2-Nitrophenyl)-1,2,3,4-tetrahydroquinolines
;
_journal_issue                   18
_journal_name_full               'Organic Letters'
_journal_page_first              4862
_journal_paper_doi               10.1021/ol402286d
_journal_volume                  15
_journal_year                    2013
_chemical_formula_moiety         'C20 H21 N3 O3'
_chemical_formula_sum            'C20 H21 N3 O3'
_chemical_formula_weight         351.40
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_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
_cell_angle_alpha                71.501(2)
_cell_angle_beta                 81.590(2)
_cell_angle_gamma                80.260(3)
_cell_formula_units_Z            2
_cell_length_a                   8.9628(7)
_cell_length_b                   9.4430(7)
_cell_length_c                   10.9622(7)
_cell_measurement_reflns_used    8921
_cell_measurement_temperature    299(2)
_cell_measurement_theta_max      26.4357
_cell_measurement_theta_min      2.8886
_cell_volume                     862.91(11)
_computing_cell_refinement       'SAINT V7.34A (Bruker AXS, 2006)'
_computing_data_collection       'APEX2 (Bruker AXS, 2010)'
_computing_data_reduction        'SAINT V7.34A (Bruker AXS, 2006)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      299(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0407
_diffrn_reflns_av_sigmaI/netI    0.0409
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            12945
_diffrn_reflns_theta_full        26.45
_diffrn_reflns_theta_max         26.45
_diffrn_reflns_theta_min         2.32
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_T_max  0.9517
_exptl_absorpt_correction_T_min  0.9474
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2008/1 (Bruker AXS)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.352
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             372
_exptl_crystal_size_max          0.59
_exptl_crystal_size_mid          0.58
_exptl_crystal_size_min          0.54
_refine_diff_density_max         0.294
_refine_diff_density_min         -0.287
_refine_diff_density_rms         0.063
_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     269
_refine_ls_number_reflns         3516
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0822
_refine_ls_R_factor_gt           0.0706
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1181P)^2^+0.4979P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1909
_refine_ls_wR_factor_ref         0.2127
_reflns_number_gt                2912
_reflns_number_total             3516
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol402286d_si_010.cif
_cod_data_source_block           wc225
_cod_database_code               1512357