Synthesis of Furo[3,2-b]quinolines and Furo[2,3-b:4,5-b']diquinolines through [4+2] Cycloaddition of Aza-o-Quinone Methides and Furans.
Lei, Lu; Yao, Yi-Yun; Jiang, Li-Juan; Lu, Xiuqiang; Liang, Cui; Mo, Dong-Liang; The Journal of organic chemistry  (2020) –; doi:10.1021/acs.joc.9b02953

data_4037878
_publ_section_title
;
 Synthesis of Furo[3,2-b]quinolines and Furo[2,3-b:4,5-b']diquinolines
 through [4+2] Cycloaddition of Aza-o-Quinone Methides and Furans.
;
_journal_name_full               'The Journal of organic chemistry'
_journal_paper_doi               10.1021/acs.joc.9b02953
_journal_year                    2020
_chemical_formula_moiety         'C20 H21 N O3 S'
_chemical_formula_sum            'C20 H21 N O3 S'
_chemical_formula_weight         355.44
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2019-07-03
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_cell_angle_alpha                90
_cell_angle_beta                 108.615(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.6913(3)
_cell_length_b                   16.8368(3)
_cell_length_c                   11.7014(3)
_cell_measurement_reflns_used    4011
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.8530
_cell_measurement_theta_min      4.0500
_cell_volume                     1809.44(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    'XT (Sheldrick, 2015)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 16.0233
_diffrn_detector_type            Eos
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.882
_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      6.00  60.00   1.00    3.00    --   18.47 -99.00  60.00   54
  2  \w    -82.00  11.00   1.00    3.00    --  -18.78 -77.00-120.00   93
  3  \w    -77.00 -26.00   1.00    3.00    --  -18.78 127.00 129.00   51
  4  \w    -42.00  51.00   1.00    3.00    --  -18.78  77.00   0.00   93
  5  \w    -58.00  42.00   1.00    3.00    --  -18.78  19.00-180.00  100
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Single source at offset/far, Eos'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      -0.0455430000
_diffrn_orient_matrix_UB_12      -0.0006911000
_diffrn_orient_matrix_UB_13      0.0368755000
_diffrn_orient_matrix_UB_21      -0.0043276000
_diffrn_orient_matrix_UB_22      0.0420639000
_diffrn_orient_matrix_UB_23      -0.0024006000
_diffrn_orient_matrix_UB_31      -0.0621977000
_diffrn_orient_matrix_UB_32      -0.0024163000
_diffrn_orient_matrix_UB_33      -0.0522201000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0336
_diffrn_reflns_av_unetI/netI     0.0417
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.882
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            14472
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.882
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.168
_diffrn_reflns_theta_min         3.283
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.197
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.83594
_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            white
_exptl_crystal_density_diffrn    1.305
_exptl_crystal_description       block
_exptl_crystal_F_000             752
_refine_diff_density_max         0.203
_refine_diff_density_min         -0.419
_refine_diff_density_rms         0.050
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     229
_refine_ls_number_reflns         4302
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0773
_refine_ls_R_factor_gt           0.0476
_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^)+(0.0481P)^2^+0.5303P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1099
_refine_ls_wR_factor_ref         0.1265
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2970
_reflns_number_total             4302
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo9b02953_si_002.cif
_cod_data_source_block           3al
_cod_database_code               4037878
_shelx_shelxl_version_number     2014/7
_chemical_oxdiff_formula         'C1 H1 O1 N1 S1'
_reflns_odcompleteness_completeness 99.77
_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
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C009(H009)
2.b Secondary CH2 refined with riding coordinates:
 C00D(H00A,H00B)
2.c Aromatic/amide H refined with riding coordinates:
 C00C(H00C), C00E(H00E), C00F(H00F), C00G(H00G), C00H(H00H), C00J(H00J),
 C00K(H00K), C00L(H00L), C00M(H00M)
2.d Idealised Me refined as rotating group:
 C00N(H00D,H00I,H00N), C00O(H00O,H00P,H00Q), C00P(H00R,H00S,H00T)
;
_shelx_res_checksum              96765
_shelx_hkl_checksum              91595
_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 1.226
_oxdiff_exptl_absorpt_empirical_full_min 0.829