Syn-selective Kobayashi aldol reaction using the E,E-vinylketene silyl N,O-acetal.
Mukaeda, Yuki; Kato, Takuya; Hosokawa, Seijiro; Organic letters 14 (2012) 5298–5301; doi:10.1021/ol3024677

data_1508694
_publ_section_title
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 Syn-selective Kobayashi aldol reaction using the E,E-vinylketene silyl
 N,O-acetal.
;
_journal_issue                   20
_journal_name_full               'Organic letters'
_journal_page_first              5298
_journal_page_last               5301
_journal_paper_doi               10.1021/ol3024677
_journal_volume                  14
_journal_year                    2012
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C23 H29 N3 O9'
_chemical_formula_sum            'C23 H29 N3 O9'
_chemical_formula_weight         491.50
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      4
_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
_cell_angle_alpha                90.0000
_cell_angle_beta                 111.243(3)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            2
_cell_length_a                   10.2747(5)
_cell_length_b                   12.2094(6)
_cell_length_c                   10.3190(5)
_cell_measurement_reflns_used    8326
_cell_measurement_temperature    123
_cell_measurement_theta_max      68.20
_cell_measurement_theta_min      3.62
_cell_volume                     1206.54(10)
_computing_cell_refinement       'RAPID AUTO'
_computing_data_collection       'RAPID AUTO (Rigaku, ????)'
_computing_data_reduction        'RAPID AUTO'
_computing_molecular_graphics    'CrystalStructure 4.0'
_computing_publication_material  'CrystalStructure 4.0 (Rigaku, 2010)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR92 (Altomare, et al., 1994)'
_diffrn_ambient_temperature      123
_diffrn_detector_area_resol_mean 10.000
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.1026
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            12527
_diffrn_reflns_theta_full        68.25
_diffrn_reflns_theta_max         68.25
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.888
_exptl_absorpt_correction_T_max  0.701
_exptl_absorpt_correction_T_min  0.628
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'NUMABS (Rigaku, 1999)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.353
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             520.00
_exptl_crystal_size_max          0.600
_exptl_crystal_size_mid          0.400
_exptl_crystal_size_min          0.400
_refine_diff_density_max         0.330
_refine_diff_density_min         -0.380
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.949
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     316
_refine_ls_number_reflns         4275
_refine_ls_number_restraints     1
_refine_ls_R_factor_gt           0.0696
_refine_ls_shift/su_max          0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0468P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1492
_reflns_number_gt                2796
_reflns_number_total             4275
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            ol3024677_si_004.cif
_cod_data_source_block           isobutyraldehyde_3,5-dinitrobenzoyl
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_absolute_configuration' value 'AD' changed to 'ad'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
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_cod_database_code               1508694