H-bond donor-directed switching of diastereoselectivity in the Michael addition of α-azido ketones to nitroolefins
Ding, Pei-Gang; Zhou, Feng; Wang, Xin; Zhao, Qiu-Hua; Yu, Jin-Sheng; Zhou, Jian; Chemical Science 11 (2020) 3852–3861; doi:10.1039/D0SC00475H

data_1557583
_publ_section_title
;
 H-bond donor-directed switching of diastereoselectivity in the Michael
 addition of \a-azido ketones to nitroolefins
;
_journal_issue                   15
_journal_name_full               'Chemical Science'
_journal_page_first              3852
_journal_page_last               3861
_journal_paper_doi               10.1039/D0SC00475H
_journal_volume                  11
_journal_year                    2020
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C19 H15 F N4 O3'
_chemical_formula_sum            'C19 H15 F N4 O3'
_chemical_formula_weight         366.35
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2016-08-15
_audit_creation_method
;
Olex2 1.2
(compiled 2016.02.19 svn.r3266 for OlexSys, GUI svn.r5155)
;
_audit_update_record
;
2018-10-20 deposited with the CCDC.	2020-03-11 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.3148(2)
_cell_length_b                   11.9114(3)
_cell_length_c                   14.6673(3)
_cell_measurement_reflns_used    3485
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      61.889
_cell_measurement_theta_min      3.711
_cell_volume                     1802.08(7)
_computing_cell_refinement       'SAINT v7.68A (Bruker, 2009)'
_computing_data_reduction        'SAINT v7.68A (Bruker, 2009)'
_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      296.15
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0405
_diffrn_reflns_av_unetI/netI     0.0294
_diffrn_reflns_Laue_measured_fraction_full 0.991
_diffrn_reflns_Laue_measured_fraction_max 0.984
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            12680
_diffrn_reflns_point_group_measured_fraction_full 0.982
_diffrn_reflns_point_group_measured_fraction_max 0.971
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.605
_diffrn_reflns_theta_min         4.782
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.848
_exptl_absorpt_correction_T_max  0.7531
_exptl_absorpt_correction_T_min  0.6639
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
wR2(int) was 0.1052 before and 0.0535 after correction.
The Ratio of minimum to maximum transmission is 0.8816.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.350
_exptl_crystal_description       block
_exptl_crystal_F_000             760
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.846
_refine_diff_density_min         -0.323
_refine_diff_density_rms         0.057
_refine_ls_abs_structure_details
;
 Flack x determined using 1071 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.06(11)
_refine_ls_extinction_coef       0.007(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     245
_refine_ls_number_reflns         3229
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0747
_refine_ls_R_factor_gt           0.0691
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1729P)^2^+0.1627P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2196
_refine_ls_wR_factor_ref         0.2314
_reflns_Friedel_coverage         0.719
_reflns_Friedel_fraction_full    0.970
_reflns_Friedel_fraction_max     0.954
_reflns_number_gt                2819
_reflns_number_total             3229
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0sc00475h3.cif
_cod_data_source_block           cu_dm16503_0m
_cod_depositor_comments
;Adding full bibliography for 1557580--1557584.cif.

 Adding full bibliography for 1557580--1557584.cif.
;
_cod_database_code               1557583
_shelx_estimated_absorpt_t_max   0.883
_shelx_estimated_absorpt_t_min   0.816
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Ternary CH refined with riding coordinates:
 C10(H10)
2.b Secondary CH2 refined with riding coordinates:
 C9(H9A,H9B), C11(H11A,H11B)
2.c Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C6(H6), C7(H7), C12(H12), C13(H13), C16(H16), C17(H17),
 C18(H18), C19(H19)
;
_shelx_res_checksum              21676
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'