Practical synthetic strategies towards lipophilic 6-iodotetrahydroquinolines and -dihydroquinolines
David R Chisholm; Garr-Layy Zhou; Ehmke Pohl; Roy Valentine; Andrew Whiting; Beilstein Journal of Organic Chemistry 12 (2016) 1851–1862; doi:10.3762/bjoc.12.174

data_4033353
_publ_section_title
;
 Practical synthetic strategies towards lipophilic
 6-iodotetrahydroquinolines and -dihydroquinolines
;
_journal_name_full               'Beilstein Journal of Organic Chemistry'
_journal_page_first              1851
_journal_page_last               1862
_journal_paper_doi               10.3762/bjoc.12.174
_journal_volume                  12
_journal_year                    2016
_chemical_formula_moiety         'C12 H16 I N'
_chemical_formula_sum            'C12 H16 I N'
_chemical_formula_weight         301.16
_chemical_name_systematic
6-Iodo-4,4,8-trimethyl-1,2,3,4-tetrahydroquinoline
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_cell_angle_alpha                90
_cell_angle_beta                 107.361(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   18.0060(8)
_cell_length_b                   9.8997(4)
_cell_length_c                   13.7872(6)
_cell_measurement_reflns_used    9973
_cell_measurement_temperature    120
_cell_measurement_theta_max      31.488
_cell_measurement_theta_min      2.575
_cell_volume                     2345.66(18)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_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_temperature      120
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker SMART APEX2 area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0311
_diffrn_reflns_av_unetI/netI     0.0196
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            54918
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         31.571
_diffrn_reflns_theta_min         2.370
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.694
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9311
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/4 (Bruker,2014) was used for absorption correction.
wR2(int) was 0.0462 before and 0.0371 after correction.
The Ratio of minimum to maximum transmission is 0.9311.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.706
_exptl_crystal_description       plate
_exptl_crystal_F_000             1184
_exptl_crystal_preparation       'Reduction of DC113'
_exptl_crystal_recrystallization_method
'The material was recrystallised from EtOAc by slow evaporation'
_exptl_crystal_size_max          0.266
_exptl_crystal_size_mid          0.165
_exptl_crystal_size_min          0.16
_refine_diff_density_max         1.717
_refine_diff_density_min         -2.798
_refine_diff_density_rms         0.109
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.082
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     259
_refine_ls_number_reflns         7857
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.082
_refine_ls_R_factor_all          0.0374
_refine_ls_R_factor_gt           0.0279
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0205P)^2^+3.5753P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0590
_refine_ls_wR_factor_ref         0.0632
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                6697
_reflns_number_total             7857
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            14_1433619.cif
_cod_data_source_block           ho1
_cod_database_code               4033353
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C9(H9A,H9B), C10(H10A,H10B), C23(H23A,H23B), C24(H24A,H24B)
2.b Aromatic/amide H refined with riding coordinates:
 N8(H8), C3(H3), C5(H5), N22(H22), C17(H17), C19(H19)
2.c Idealised Me refined as rotating group:
 C7(H7A,H7B,H7C), C12(H12A,H12B,H12C), C13(H13A,H13B,H13C), C21(H21A,H21B,
 H21C), C26(H26A,H26B,H26C), C27(H27A,H27B,H27C)
;
_shelx_res_checksum              70392
_shelx_hkl_checksum              91523
_olex2_diffrn_ambient_temperature_device 'Oxford Cryosystems'
_olex2_exptl_crystal_mounting_method
'The crystal was mounted on a MITIGEN holder in perfluoroether oil'
_olex2_submission_original_sample_id DC29
_olex2_submission_special_instructions 'No special instructions were received'