Indium-Mediated Asymmetric Intramolecular Allenylation of N-tert-Butanesulfinyl Imines: Efficient and Practical Access to Chiral 3-Allenyl-4-aminochromanes.
Su, Lin; Zhu, Ting-Shun; Xu, Ming-Hua; Organic letters 16 (2014) 4118–4121; doi:10.1021/ol501815e

data_1517232
_publ_section_title
;
 Indium-Mediated Asymmetric Intramolecular Allenylation of
 N-tert-Butanesulfinyl Imines: Efficient and Practical Access to Chiral
 3-Allenyl-4-aminochromanes.
;
_journal_issue                   16
_journal_name_full               'Organic letters'
_journal_page_first              4118
_journal_page_last               4121
_journal_paper_doi               10.1021/ol501815e
_journal_volume                  16
_journal_year                    2014
_chemical_absolute_configuration RS
_chemical_formula_sum            'C16 H23 N O2 S'
_chemical_formula_weight         293.42
_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                 98.463(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   5.5260(9)
_cell_length_b                   11.111(2)
_cell_length_c                   13.716(2)
_cell_measurement_temperature    298
_cell_volume                     833.0(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SMART'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0389
_diffrn_reflns_av_sigmaI/netI    0.0335
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            6489
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         1.50
_exptl_absorpt_coefficient_mu    0.196
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.170
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             316.0
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.224
_refine_diff_density_min         -0.179
_refine_diff_density_rms         0.032
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.05(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     185
_refine_ls_number_reflns         2944
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0435
_refine_ls_R_factor_gt           0.0367
_refine_ls_shift/su_max          0.023
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0664P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0971
_refine_ls_wR_factor_ref         0.1010
_reflns_number_gt                2429
_reflns_number_total             2944
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol501815e_si_002.cif
_cod_data_source_block           2013347_0m
_cod_depositor_comments
'Adding full bibliography for 1517232--1517235.cif.'
_cod_original_sg_symbol_H-M      P21
_cod_database_code               1517232