Stereocontrolled Disruption of the Ugi Reaction toward the Production of Chiral Piperazinones: Substrate Scope and Process Development.
Zaretsky, Serge; Adachi, Shinya; Rotstein, Benjamin H.; Hickey, Jennifer L.; Scully, Conor C. G.; St Denis, Jeffrey D.; Courtemanche, Rebecca; Yu, Joy C. Y.; Chung, Benjamin K. W.; Yudin, Andrei K.; The Journal of organic chemistry 79 (2014) 9948–; doi:10.1021/jo5018316

data_4030089
_publ_section_title
;
 Stereocontrolled Disruption of the Ugi Reaction toward the Production of
 Chiral Piperazinones: Substrate Scope and Process Development.
;
_journal_issue                   21
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              9948
_journal_paper_doi               10.1021/jo5018316
_journal_volume                  79
_journal_year                    2014
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C16 H27 N3 O2'
_chemical_formula_sum            'C16 H27 N3 O2'
_chemical_formula_weight         293.41
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 96.368(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.8003(5)
_cell_length_b                   17.4561(9)
_cell_length_c                   10.0164(5)
_cell_measurement_reflns_used    1824
_cell_measurement_temperature    147(2)
_cell_measurement_theta_max      62.36
_cell_measurement_theta_min      4.54
_cell_volume                     1702.98(15)
_computing_cell_refinement       APEX2
_computing_data_collection       'APEX2 (Bruker, 2007)'
_computing_data_reduction        'SAINT (Bruker, 2007)'
_computing_molecular_graphics    'PLATON (Spek, 2009)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      147(2)
_diffrn_measured_fraction_theta_full 0.967
_diffrn_measured_fraction_theta_max 0.967
_diffrn_measurement_device_type  'Bruker Kappa APEX-DUO CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0335
_diffrn_reflns_av_sigmaI/netI    0.0323
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            40086
_diffrn_reflns_theta_full        66.43
_diffrn_reflns_theta_max         66.43
_diffrn_reflns_theta_min         4.54
_exptl_absorpt_coefficient_mu    0.607
_exptl_absorpt_correction_T_max  0.7528
_exptl_absorpt_correction_T_min  0.6814
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'TWINABS (Bruker, 2007)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.144
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             640
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.107
_refine_diff_density_min         -0.159
_refine_diff_density_rms         0.030
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     397
_refine_ls_number_reflns         5691
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0279
_refine_ls_R_factor_gt           0.0276
_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^)+(0.0358P)^2^+0.2233P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0688
_refine_ls_wR_factor_ref         0.0690
_reflns_number_gt                5628
_reflns_number_total             5691
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo5018316_si_002.cif
_cod_data_source_block           d12165
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/saulius/struct/COD-crude-data--automatic-downloads/rss-feeds/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 2827 2014-09-09 07:05:25Z andrius 

 Adding full bibliography for 4030088--4030090.cif.
;
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               4030089