Synthesis of a Bicyclic Azetidine with In Vivo Antimalarial Activity Enabled by Stereospecific, Directed C(sp<sup>3</sup>)-H Arylation.
Maetani, Micah; Zoller, Jochen; Melillo, Bruno; Verho, Oscar; Kato, Nobutaka; Pu, Jun; Comer, Eamon; Schreiber, Stuart L.; Journal of the American Chemical Society 139 (2017) 11300–11306; doi:10.1021/jacs.7b06994

data_4131576
_publ_section_title
;
 Synthesis of a Bicyclic Azetidine with In Vivo Antimalarial Activity
 Enabled by Stereospecific, Directed C(sp<sup>3</sup>)-H Arylation.
;
_journal_issue                   32
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11300
_journal_page_last               11306
_journal_paper_doi               10.1021/jacs.7b06994
_journal_volume                  139
_journal_year                    2017
_chemical_absolute_configuration ad
_chemical_formula_sum            'C19 H16 Br N3 O'
_chemical_formula_weight         382.26
_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     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 94.153(3)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.7531(14)
_cell_length_b                   6.6125(12)
_cell_length_c                   16.284(3)
_cell_measurement_reflns_used    9863
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.44
_cell_measurement_theta_min      2.51
_cell_volume                     832.6(3)
_computing_cell_refinement       'SAINT 7.46A (Bruker-AXS, 2015)'
_computing_data_collection       'APEX2 v2011.4.0 (Bruker-AXS, 2015)'
_computing_data_reduction        'SAINT 7.46A (Bruker-AXS, 2015)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT-2015 (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker Smart APEX2 CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0360
_diffrn_reflns_av_unetI/netI     0.0195
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            49337
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.989
_diffrn_reflns_theta_min         2.508
_diffrn_source
'I\mS micro-focus sealed tube, multilayer optics'
_exptl_absorpt_coefficient_mu    2.479
_exptl_absorpt_correction_T_max  0.7462
_exptl_absorpt_correction_T_min  0.5456
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2009)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.525
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             388
_exptl_crystal_size_max          0.560
_exptl_crystal_size_mid          0.102
_exptl_crystal_size_min          0.015
_refine_diff_density_max         0.304
_refine_diff_density_min         -0.339
_refine_diff_density_rms         0.048
_refine_ls_abs_structure_details
; 
 Flack x determined using 2246 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259). 
;
_refine_ls_abs_structure_Flack   -0.007(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     223
_refine_ls_number_reflns         5301
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.066
_refine_ls_R_factor_all          0.0248
_refine_ls_R_factor_gt           0.0231
_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^)+(0.0290P)^2^+0.2228P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0570
_refine_ls_wR_factor_ref         0.0577
_reflns_Friedel_coverage         0.855
_reflns_Friedel_fraction_full    0.998
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                5078
_reflns_number_total             5301
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja7b06994_si_001.cif
_cod_data_source_block           X16226
_cod_original_cell_volume        832.7(3)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               4131576
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.337
_shelx_estimated_absorpt_t_max   0.964
_shelx_res_checksum              8073
_shelx_hkl_checksum              88294