Stereocontrolled synthesis of spirooxindoles through Lewis acid-promoted [5 + 2]-annulation of chiral silyl alcohols.
Zhang, Yun; Panek, James S.; Organic letters 11 (2009) 3366–3369; doi:10.1021/ol901202t

data_1504031
_publ_section_title
;
 Stereocontrolled synthesis of spirooxindoles through Lewis acid-promoted
 [5 + 2]-annulation of chiral silyl alcohols.
;
_journal_issue                   15
_journal_name_full               'Organic letters'
_journal_page_first              3366
_journal_page_last               3369
_journal_paper_doi               10.1021/ol901202t
_journal_volume                  11
_journal_year                    2009
_chemical_formula_moiety         'C15 H17 N O2'
_chemical_formula_sum            'C15 H17 N O2'
_chemical_formula_weight         243.30
_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   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 100.670(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.5555(6)
_cell_length_b                   7.8352(8)
_cell_length_c                   9.5660(8)
_cell_measurement_reflns_used    2934
_cell_measurement_temperature    203(2)
_cell_measurement_theta_max      31.44
_cell_measurement_theta_min      2.17
_cell_volume                     630.16(9)
_computing_cell_refinement       'Bruker SAINT+'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT+'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      203(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker X8 APEX II diffractometer'
_diffrn_measurement_method       'phi and omega 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  0.0351
_diffrn_reflns_av_sigmaI/netI    0.0351
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            8020
_diffrn_reflns_theta_full        30.50
_diffrn_reflns_theta_max         30.50
_diffrn_reflns_theta_min         2.17
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.9832
_exptl_absorpt_correction_T_min  0.9508
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.282
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             260
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.313
_refine_diff_density_min         -0.208
_refine_diff_density_rms         0.042
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     220
_refine_ls_number_reflns         2038
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0492
_refine_ls_R_factor_gt           0.0423
_refine_ls_shift/su_max          0.012
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0631P)^2^+0.0574P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1031
_refine_ls_wR_factor_ref         0.1073
_reflns_number_gt                1834
_reflns_number_total             2038
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol901202t_si_002.cif
_cod_data_source_block           porco101
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               1504031