Reductive Cyclization of o-Nitroarylated-α,β-unsaturated Aldehydes and Ketones with TiCl<sub>3</sub>/HCl or Fe/HCl Leading to 1,2,3,9-Tetrahydro-4 H-carbazol-4-ones and Related Heterocycles.
Qiu, Yun; Dlugosch, Michael; Liu, Xin; Khan, Faiyaz; Ward, Jas S.; Lan, Ping; Banwell, Martin G.; The Journal of organic chemistry 83 (2018) 12023–12033; doi:10.1021/acs.joc.8b01940

data_4035265
_publ_section_title
;
 Reductive Cyclization of o-Nitroarylated-\a,\b-unsaturated Aldehydes and
 Ketones with TiCl<sub>3</sub>/HCl or Fe/HCl Leading to
 1,2,3,9-Tetrahydro-4 H-carbazol-4-ones and Related Heterocycles.
;
_journal_issue                   19
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              12023
_journal_page_last               12033
_journal_paper_doi               10.1021/acs.joc.8b01940
_journal_volume                  83
_journal_year                    2018
_chemical_formula_moiety         'C12 H13 N O'
_chemical_formula_sum            'C12 H13 N O'
_chemical_formula_weight         187.23
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2018-05-30
_audit_creation_method
;
Olex2 1.2
(compiled 2017.01.04 svn.r3372 for OlexSys, GUI svn.r5292)
;
_cell_angle_alpha                90
_cell_angle_beta                 99.725(10)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.0538(7)
_cell_length_b                   8.4543(7)
_cell_length_c                   8.3005(10)
_cell_measurement_reflns_used    1402
_cell_measurement_temperature    150.01(10)
_cell_measurement_theta_max      28.7700
_cell_measurement_theta_min      4.1190
_cell_volume                     487.89(9)
_computing_cell_refinement       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      150.01(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 10.3744
_diffrn_detector_type            Atlas
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
--------------------------------------------------------------------------
  1  \w    -78.00   9.00   1.00    4.00    --  -11.22 -57.00  30.00   87
  2  \w    -37.00  59.00   1.00    4.00    --  -11.22  57.00-180.00   96
  3  \w    -15.00  69.00   1.00    4.00    --   11.38  57.00 -30.00   84
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'New Xcalibur, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      -0.0166585000
_diffrn_orient_matrix_UB_12      -0.0080901000
_diffrn_orient_matrix_UB_13      -0.0862985000
_diffrn_orient_matrix_UB_21      0.0937677000
_diffrn_orient_matrix_UB_22      0.0291076000
_diffrn_orient_matrix_UB_23      -0.0024798000
_diffrn_orient_matrix_UB_31      0.0365760000
_diffrn_orient_matrix_UB_32      -0.0782758000
_diffrn_orient_matrix_UB_33      0.0079313000
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0247
_diffrn_reflns_av_unetI/netI     0.0434
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            3526
_diffrn_reflns_point_group_measured_fraction_full 0.939
_diffrn_reflns_point_group_measured_fraction_max 0.929
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.372
_diffrn_reflns_theta_min         3.465
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.98614
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.46 (Rigaku Oxford Diffraction, 2018)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.275
_exptl_crystal_description       block
_exptl_crystal_F_000             200
_exptl_crystal_size_max          0.517
_exptl_crystal_size_mid          0.287
_exptl_crystal_size_min          0.233
_refine_diff_density_max         0.155
_refine_diff_density_min         -0.181
_refine_diff_density_rms         0.038
_refine_ls_abs_structure_details
;
 Flack x determined using 642 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.093
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     133
_refine_ls_number_reflns         1859
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.093
_refine_ls_R_factor_all          0.0471
_refine_ls_R_factor_gt           0.0380
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0322P)^2^+0.0182P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0747
_refine_ls_wR_factor_ref         0.0806
_reflns_Friedel_coverage         0.739
_reflns_Friedel_fraction_full    0.872
_reflns_Friedel_fraction_max     0.849
_reflns_number_gt                1663
_reflns_number_total             1859
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo8b01940_si_008.cif
_cod_data_source_block           MED-1163F2_scale
_cod_database_code               4035265
_shelxl_version_number           2014/6
_reflns_odcompleteness_completeness 99.72
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     26.32
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C1(H1A,H1B), C2(H2A,H2B), C3(H3A,H3B)
2.b Aromatic/amide H refined with riding coordinates:
 C5(H5), C9(H9), C10(H10), C11(H11), C12(H12)
;
_ins_header
;
TITL MED-1163F2_scale in P2(1)/m 
REM P2(1)/m (#11 in standard setting)
CELL 0.71073   7.053846   8.454304   8.300489  90.0000  99.7251  90.0000
ZERR    2.00   0.000659   0.000729   0.001003   0.0000   0.0097   0.0000
LATT  1
SYMM -x, y+1/2,-z 
SFAC C H O
UNIT 24.00 24.00 4.00
TREF
HKLF 4
END
;
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 1.068
_oxdiff_exptl_absorpt_empirical_full_min 0.961