Catalytic asymmetric direct α-alkylation of amino esters by aldehydes via imine activation
Xu, Biao; Shi, Li-Li; Zhang, Yu-Zu; Wu, Zhi-Jun; Fu, Li-Na; Luo, Chun-Qin; Zhang, Lan-Xi; Peng, Yun-Gui; Guo, Qi-Xiang; Chemical Science 5 (2014) 1988–; doi:10.1039/c3sc53314j

data_1514292
_publ_section_title
;
 Catalytic asymmetric direct \a-alkylation of amino esters by aldehydes
 via imine activation
;
_journal_issue                   5
_journal_name_full               'Chemical Science'
_journal_page_first              1988
_journal_paper_doi               10.1039/c3sc53314j
_journal_volume                  5
_journal_year                    2014
_chemical_absolute_configuration unknown
_chemical_formula_moiety         'C20 H19 Cl N2 O4'
_chemical_formula_sum            'C20 H19 Cl N2 O4'
_chemical_formula_weight         386.82
_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                 101.402(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.1925(12)
_cell_length_b                   8.1206(9)
_cell_length_c                   21.465(2)
_cell_measurement_reflns_used    5975
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.83
_cell_measurement_theta_min      2.40
_cell_volume                     1912.4(3)
_computing_cell_refinement       'SAINT (Bruker, 2002)'
_computing_data_collection       'SMART (Bruker, 2002)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'XP (Bruker, 2002)'
_computing_publication_material  'SHELXL-97 (Bruker, 2002)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker APEX II area-detector 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  0.0233
_diffrn_reflns_av_sigmaI/netI    0.0355
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            11292
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         1.86
_exptl_absorpt_coefficient_mu    0.228
_exptl_absorpt_correction_T_max  0.9453
_exptl_absorpt_correction_T_min  0.9225
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2002)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.343
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             808
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.29
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.242
_refine_diff_density_min         -0.273
_refine_diff_density_rms         0.060
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.085
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     491
_refine_ls_number_reflns         5728
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.085
_refine_ls_R_factor_all          0.0440
_refine_ls_R_factor_gt           0.0381
_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^)+(0.0812P)^2^+0.1052P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1157
_refine_ls_wR_factor_ref         0.1229
_reflns_number_gt                5132
_reflns_number_total             5728
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c3sc53314j2.cif
_cod_data_source_block           mo_20130724a_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/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 
;
_cod_original_cell_volume        1912.5(4)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               1514292