Synthesis of sparteine-like chiral diamines and evaluation in the enantioselective lithiation–substitution of N-(tert-butoxycarbonyl)pyrrolidine
Jean-Paul R. Hermet; David W. Porter; Michael J. Dearden; Justin R. Harrison; Tobias Koplin; Peter O'Brien; Jérôme Parmene; Vladimir Tyurin; Adrian C. Whitwood; John Gilday; Neil M. Smith; Org. Biomol. Chem. 1 (2003) 3977–3988; doi:10.1039/b308410h

data_7151561
_publ_section_title
;
 Synthesis of sparteine-like chiral diamines and evaluation in the
 enantioselective lithiation--substitution of
 N-(tert-butoxycarbonyl)pyrrolidine
;
_journal_issue                   22
_journal_name_full               'Org. Biomol. Chem.'
_journal_page_first              3977
_journal_page_last               3988
_journal_paper_doi               10.1039/b308410h
_journal_volume                  1
_journal_year                    2003
_chemical_formula_moiety         'C13 H20 N2 O3'
_chemical_formula_sum            'C13 H20 N2 O3'
_chemical_formula_weight         252.31
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.9103(4)
_cell_length_b                   9.9556(5)
_cell_length_c                   15.8702(9)
_cell_measurement_reflns_used    4906
_cell_measurement_temperature    115(2)
_cell_measurement_theta_max      30.0
_cell_measurement_theta_min      2.4
_cell_volume                     1249.81(11)
_computing_cell_refinement       'SAINT+ v6.22 (Bruker)'
_computing_data_collection       'SMART v5.625 (Bruker)'
_computing_data_reduction        'SAINT+ v6.22 (Bruker)'
_computing_molecular_graphics    'XSHELL v4.02 (Bruker)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      115(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Bruker SMART CCD'
_diffrn_measurement_method       \w
_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  0.0196
_diffrn_reflns_av_sigmaI/netI    0.0238
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            10029
_diffrn_reflns_theta_full        30.03
_diffrn_reflns_theta_max         30.03
_diffrn_reflns_theta_min         2.41
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.891
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v2.03; (Sheldrick)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.341
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             544
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.27
_refine_diff_density_max         0.332
_refine_diff_density_min         -0.183
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.0(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.061
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     164
_refine_ls_number_reflns         3598
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.061
_refine_ls_R_factor_all          0.0362
_refine_ls_R_factor_gt           0.0333
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0594P)^2^+0.0636P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0877
_refine_ls_wR_factor_ref         0.0898
_reflns_number_gt                3370
_reflns_number_total             3598
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b308410h.txt
_cod_data_source_block           pob0301m
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_database_code               7151561