Gold-catalyzed diastereoselective domino dearomatization/ipso-cyclization/aza-Michael sequence: A facile access to diverse fused azaspiro tetracyclic scaffolds
He, Yi; Li, Zhenghua; Tian, Guilong; Song, Liangliang; Van Meervelt, Luc; Van der Eycken, Erik V�lery; Chem. Commun.  (2017) –; doi:10.1039/C7CC03152A

data_7120181
_publ_section_title
;
 Gold-catalyzed diastereoselective domino
 dearomatization/ipso-cyclization/aza-Michael sequence: A facile access to
 diverse fused azaspiro tetracyclic scaffolds
;
_journal_name_full               'Chem. Commun.'
_journal_paper_doi               10.1039/C7CC03152A
_journal_year                    2017
_chemical_formula_moiety         'C28 H30 N2 O4'
_chemical_formula_sum            'C28 H30 N2 O4'
_chemical_formula_weight         458.54
_chemical_name_systematic
;
 ? 
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2016-08-30
_audit_creation_method
;
Olex2 1.2
(compiled 2016.02.19 svn.r3266 for OlexSys, GUI svn.r5155)
;
_audit_update_record
;
2016-11-04 deposited with the CCDC.
2017-05-19 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   17.4289(10)
_cell_length_b                   9.9800(5)
_cell_length_c                   28.0460(14)
_cell_measurement_reflns_used    7855
_cell_measurement_temperature    293.8(3)
_cell_measurement_theta_max      27.2570
_cell_measurement_theta_min      2.8950
_cell_volume                     4878.3(4)
_computing_cell_refinement       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_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    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_environment      air
_diffrn_ambient_temperature      293.8(3)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 15.9631
_diffrn_detector_type            Eos
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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    -20.00  25.00   1.00   52.27    --  -17.00 -99.00 -60.00   45
  2  \w    -86.00   4.00   1.00   52.27    --  -17.00 -57.00-120.00   90
  3  \w    -51.00  49.00   1.00   52.27    --   19.03 -77.00  90.00  100
  4  \w    -42.00  10.00   1.00   52.27    --  -17.00  38.00 -90.00   52
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Single source at offset, Eos'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      -0.0315154000
_diffrn_orient_matrix_UB_12      0.0318022000
_diffrn_orient_matrix_UB_13      0.0113251000
_diffrn_orient_matrix_UB_21      0.0213843000
_diffrn_orient_matrix_UB_22      0.0040467000
_diffrn_orient_matrix_UB_23      0.0214539000
_diffrn_orient_matrix_UB_31      0.0144404000
_diffrn_orient_matrix_UB_32      0.0634302000
_diffrn_orient_matrix_UB_33      -0.0070626000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0295
_diffrn_reflns_av_unetI/netI     0.0248
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            25978
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.372
_diffrn_reflns_theta_min         2.461
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.68454
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.41 (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'light brown'
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    brown
_exptl_crystal_density_diffrn    1.249
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1952
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.995
_refine_diff_density_min         -0.385
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     312
_refine_ls_number_reflns         4965
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.1001
_refine_ls_R_factor_gt           0.0732
_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^)+(0.0999P)^2^+4.1794P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1971
_refine_ls_wR_factor_ref         0.2238
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3457
_reflns_number_total             4965
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7cc03152a2.cif
_cod_data_source_block           ev2007
_cod_original_cell_volume        4878.4(4)
_cod_database_code               7120181
_chemical_oxdiff_formula         'C28 H30 N2 O4'
_chemical_oxdiff_usercomment     HE-01
_reflns_odcompleteness_completeness 99.71
_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:
 C2(H2), C4(H4)
2.b Secondary CH2 refined with riding coordinates:
 C13(H13A,H13B), C23(H23A,H23B)
2.c Aromatic/amide H refined with riding coordinates:
 C17(H17), C18(H18), C19(H19), C20(H20), C25(H25), C26(H26), C28(H28),
 C29(H29), C33(H33)
2.d Idealised Me refined as rotating group:
 C10(H10A,H10B,H10C), C11(H11A,H11B,H11C), C12(H12A,H12B,H12C), C31(H31A,H31B,
 H31C), C34(H34A,H34B,H34C)
;
_shelx_shelxl_version_number     2014/7
_olex2_date_sample_data_collection 2016-08-29
_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 1.369
_oxdiff_exptl_absorpt_empirical_full_min 0.750