A General Approach to 2,2-Disubstituted Indoxyls: Total Synthesis of Brevianamide A and Trigonoliimine C
Xu, Fan; Smith, Myles W.; Chemical Science  (2021) –; doi:10.1039/D1SC03533A

data_1564723
_publ_section_title
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 A General Approach to 2,2-Disubstituted Indoxyls: Total Synthesis of
 Brevianamide A and Trigonoliimine C
;
_journal_name_full               'Chemical Science'
_journal_paper_doi               10.1039/D1SC03533A
_journal_year                    2021
_chemical_formula_moiety         'C21 H28 N2 O3'
_chemical_formula_sum            'C21 H28 N2 O3'
_chemical_formula_weight         356.45
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_date             2021-03-02
_audit_creation_method
;
Olex2 1.3
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6272)
;
_audit_update_record
;
2021-06-28 deposited with the CCDC.	2021-09-16 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 93.380(6)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   11.3895(13)
_cell_length_b                   20.671(2)
_cell_length_c                   16.3407(18)
_cell_measurement_reflns_used    9939
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.87
_cell_measurement_theta_min      2.33
_cell_volume                     3840.4(7)
_computing_cell_refinement       'SAINT V8.40A (1, 2016)'
_computing_data_collection       'SAINT V8.40A (1, 2016)'
_computing_data_reduction        'SAINT V8.40A (1, 2016)'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT, 2015, Sheldrick'
_diffrn_ambient_temperature      100.15
_diffrn_detector_area_resol_mean 8
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area detector'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0582
_diffrn_reflns_av_unetI/netI     0.0365
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            55439
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.534
_diffrn_reflns_theta_min         1.970
_diffrn_source                   'sealed tube'
_diffrn_source_current           30.0
_diffrn_source_power             1.5
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.6507
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0688 before and 0.0607 after correction.
The Ratio of minimum to maximum transmission is 0.8726.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.233
_exptl_crystal_description       prism
_exptl_crystal_F_000             1536
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.29
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.327
_refine_diff_density_min         -0.207
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     250
_refine_ls_number_reflns         4873
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0585
_refine_ls_R_factor_gt           0.0413
_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^)+(0.0464P)^2^+2.5859P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1001
_refine_ls_wR_factor_ref         0.1082
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3790
_reflns_number_total             4873
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1sc03533a2.cif
_cod_data_source_block           xf2188
_cod_original_cell_volume        3840.5(7)
_cod_database_code               1564723
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.980
_shelx_estimated_absorpt_t_min   0.963
_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 Secondary CH2 refined with riding coordinates:
 C9(H9A,H9B), C10(H10A,H10B), C12(H12A,H12B), C13(H13A,H13B), C14(H14A,H14B),
 C15(H15A,H15B)
2.b Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C6(H6), C7(H7)
2.c Idealised Me refined as rotating group:
 C19(H19A,H19B,H19C), C20(H20A,H20B,H20C), C21(H21A,H21B,H21C)
;
_shelx_res_checksum              17670
_shelx_hkl_checksum              57434
_olex2_submission_special_instructions 'No special instructions were received'