Regio- and Stereoselective Hydroamination of Alkynes Using an Ammonia Surrogate: Synthesis of N-Silylenamines as Reactive Synthons.
Lui, Erica K. J.; Brandt, Jason W.; Schafer, Laurel L.; Journal of the American Chemical Society 140 (2018) 4973–4976; doi:10.1021/jacs.7b13783

data_4132002
_publ_section_title
;
 Regio- and Stereoselective Hydroamination of Alkynes Using an Ammonia
 Surrogate: Synthesis of N-Silylenamines as Reactive Synthons.
;
_journal_issue                   15
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              4973
_journal_page_last               4976
_journal_paper_doi               10.1021/jacs.7b13783
_journal_volume                  140
_journal_year                    2018
_chemical_formula_moiety         'C49 H64 N4 O2 Si Ti, C3 H7'
_chemical_formula_sum            'C52 H71 N4 O2 Si Ti'
_chemical_formula_weight         860.11
_chemical_name_systematic
'Bis(N-2,6-diisopropylphenylbenzamidate)(N-tertbutyldimethylsilylimido)pyridine titanium (IV)'
_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     direct
_audit_creation_date             2016-10-09
_audit_creation_method
;
Olex2 1.2
(compiled 2016.08.31 svn.r3340 for OlexSys, GUI svn.r5227)
;
_cell_angle_alpha                90
_cell_angle_beta                 104.842(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.8621(10)
_cell_length_b                   21.1899(17)
_cell_length_c                   18.8390(15)
_cell_measurement_reflns_used    9947
_cell_measurement_temperature    90
_cell_measurement_theta_max      30.058
_cell_measurement_theta_min      2.526
_cell_volume                     4963.2(7)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_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      90
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker SMART APEX2 area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0399
_diffrn_reflns_av_unetI/netI     0.0353
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            59876
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         30.062
_diffrn_reflns_theta_min         1.731
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_exptl_absorpt_coefficient_mu    0.238
_exptl_absorpt_correction_T_max  0.9445
_exptl_absorpt_correction_T_min  0.8745
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/5 (Bruker,2014) was used for absorption correction.
wR2(int) was 0.0483 before and 0.0443 after correction.
The Ratio of minimum to maximum transmission is 0.9259.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_colour            'clear yellow'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.151
_exptl_crystal_description       prism
_exptl_crystal_F_000             1852
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.24
_refine_diff_density_max         1.011
_refine_diff_density_min         -0.415
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.012
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     555
_refine_ls_number_reflns         14512
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.012
_refine_ls_R_factor_all          0.0605
_refine_ls_R_factor_gt           0.0427
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0540P)^2^+2.7230P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1056
_refine_ls_wR_factor_ref         0.1155
_reflns_Friedel_coverage         0.000
_reflns_number_gt                11422
_reflns_number_total             14512
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja7b13783_si_003.cif
_cod_data_source_block           ls599
_cod_database_code               4132002
_shelx_estimated_absorpt_t_max   0.945
_shelx_estimated_absorpt_t_min   0.936
_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:
 C7(H7), C10(H10), C33(H33), C36(H36)
2.b Secondary CH2 refined with riding coordinates:
 C51(H51A,H51B), C52(H52A,H52B)
2.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C4(H4), C5(H5), C15(H15), C16(H16), C17(H17), C18(H18), C19(H19),
 C22(H22), C23(H23), C24(H24), C25(H25), C26(H26), C29(H29), C30(H30), C31(H31),
  C39(H39), C40(H40), C41(H41), C42(H42), C43(H43)
2.d Idealised Me refined as rotating group:
 C8(H8A,H8B,H8C), C9(H9A,H9B,H9C), C11(H11A,H11B,H11C), C12(H12A,H12B,H12C),
 C34(H34A,H34B,H34C), C35(H35A,H35B,H35C), C37(H37A,H37B,H37C), C38(H38A,H38B,
 H38C), C45(H45A,H45B,H45C), C46(H46A,H46B,H46C), C47(H47A,H47B,H47C), C48(H48A,
 H48B,H48C), C49(H49A,H49B,H49C), C50(H50A,H50B,H50C)
;
_shelx_res_checksum              59162
_shelx_hkl_checksum              48666
_shelx_shelxl_version_number     2014/7
_olex2_submission_original_sample_id LS599
_olex2_submission_special_instructions 'No special instructions were received'