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_1517235
_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            'C19 H21 N O3 S'
_chemical_formula_weight         343.43
_space_group_IT_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 95.858(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   11.8178(8)
_cell_length_b                   6.1413(4)
_cell_length_c                   12.0958(8)
_cell_measurement_temperature    296(2)
_cell_volume                     873.29(10)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0369
_diffrn_reflns_av_sigmaI/netI    0.0572
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            6509
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         1.69
_exptl_absorpt_coefficient_mu    0.202
_exptl_crystal_density_diffrn    1.306
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             364
_refine_diff_density_max         0.159
_refine_diff_density_min         -0.188
_refine_diff_density_rms         0.033
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.080
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     220
_refine_ls_number_reflns         2861
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.0657
_refine_ls_R_factor_gt           0.0422
_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^)+(0.0369P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0855
_refine_ls_wR_factor_ref         0.0939
_reflns_number_gt                2155
_reflns_number_total             2861
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol501815e_si_003.cif
_cod_data_source_block           2013379_0m
_cod_depositor_comments
'Adding full bibliography for 1517232--1517235.cif.'
_cod_original_sg_symbol_H-M      P21
_cod_database_code               1517235