NHC-Cu-Catalyzed Addition of Propargylboron Reagents to Phosphinoylimines. Enantioselective Synthesis of Trimethylsilyl-Substituted Homoallenylamides and Application to the Synthesis of S-(-)-Cyclooroidin.
Mszar, Nicholas W.; Haeffner, Fredrik; Hoveyda, Amir H.; Journal of the American Chemical Society 136 (2014) 3362–3365; doi:10.1021/ja500373s

data_4121495
_publ_section_title
;
 NHC-Cu-Catalyzed Addition of Propargylboron Reagents to
 Phosphinoylimines. Enantioselective Synthesis of
 Trimethylsilyl-Substituted Homoallenylamides and Application to the
 Synthesis of S-(-)-Cyclooroidin.
;
_journal_issue                   9
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              3362
_journal_page_last               3365
_journal_paper_doi               10.1021/ja500373s
_journal_volume                  136
_journal_year                    2014
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C22 H19 Br N O P'
_chemical_formula_sum            'C22 H19 Br N O P'
_chemical_formula_weight         424.26
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           79
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'I 4'
_symmetry_space_group_name_H-M   'I 4'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   27.1750(9)
_cell_length_b                   27.1750(9)
_cell_length_c                   5.2579(2)
_cell_measurement_reflns_used    6852
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.37
_cell_measurement_theta_min      2.37
_cell_volume                     3882.9(2)
_computing_cell_refinement       'SAINT (Bruker, 2010)'
_computing_data_collection       'APEX2 (Bruker, 2010)'
_computing_data_reduction        'SAINT (Bruker, 2010)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Kappa DUO CCD diffractometer'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1011
_diffrn_reflns_av_sigmaI/netI    0.0827
_diffrn_reflns_limit_h_max       36
_diffrn_reflns_limit_h_min       -36
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       -36
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            29844
_diffrn_reflns_theta_full        28.34
_diffrn_reflns_theta_max         28.34
_diffrn_reflns_theta_min         1.50
_exptl_absorpt_coefficient_mu    2.210
_exptl_absorpt_correction_T_max  0.9367
_exptl_absorpt_correction_T_min  0.6662
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Sheldrick, G.M. (2008). SADABS v2008/1. Bruker AXS Inc. Madison, WI USA.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.452
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    none
_exptl_crystal_description       needle
_exptl_crystal_F_000             1728
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.874
_refine_diff_density_min         -0.686
_refine_diff_density_rms         0.113
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.03(2)
_refine_ls_extinction_coef       na
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     282
_refine_ls_number_reflns         4780
_refine_ls_number_restraints     287
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.1098
_refine_ls_R_factor_gt           0.0770
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0735P)^2^+26.5294P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1752
_refine_ls_wR_factor_ref         0.1901
_reflns_number_gt                3632
_reflns_number_total             4780
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja500373s_si_003.cif
_cod_data_source_block           C22H19BrNOP
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to
/usr/data/users/saulius/crontab/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_database_code               4121495