Enantioselective 6-endo bromoaminocyclization of 2,4-dienyl N-tosylcarbamates catalyzed by a chiral phosphine oxide-Sc(OTf)3 complex. A dramatic additive effect.
Huang, Hu; Pan, Hongjie; Cai, Yudong; Liu, Mao; Tian, Hua; Shi, Yian; Organic & biomolecular chemistry 13 (2015) 3566–3570; doi:10.1039/c5ob00001g

data_7154326
_publ_section_title
;
 Enantioselective 6-endo bromoaminocyclization of 2,4-dienyl
 N-tosylcarbamates catalyzed by a chiral phosphine oxide-Sc(OTf)3 complex.
 A dramatic additive effect.
;
_journal_issue                   12
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              3566
_journal_page_last               3570
_journal_paper_doi               10.1039/c5ob00001g
_journal_volume                  13
_journal_year                    2015
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C20 H24 Br N O5 S2'
_chemical_formula_sum            'C20 H24 Br N O5 S2'
_chemical_formula_weight         502.43
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_audit_block_doi                 10.5517/cc13vg3j
_audit_creation_date             2014-06-17
_audit_creation_method
;
Olex2 1.2
(compiled 2013.12.10 svn.r2850 for OlexSys, GUI svn.r4736)
;
_audit_update_record
;
2014-12-09 deposited with the CCDC.
2015-02-02 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.6597(12)
_cell_length_b                   15.690(3)
_cell_length_c                   24.567(5)
_cell_measurement_reflns_used    6744
_cell_measurement_temperature    173.1500
_cell_measurement_theta_max      27.4672
_cell_measurement_theta_min      1.5400
_cell_volume                     2181.6(8)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2007)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution
;
'SHELXS (Sheldrick, 2013)'
;
_diffrn_ambient_temperature      173.1500
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device
;
Saturn724 (2x2 bin mode)
;
_diffrn_measurement_device_details
;
AFC10: Fixed Chi 2 circle
;
_diffrn_measurement_device_type  'Saturn724+ CCD'
_diffrn_measurement_method       '\w scans at fixed \c = 45\%'
_diffrn_orient_matrix_type       d*Trek
_diffrn_orient_matrix_UB_11      -0.0109
_diffrn_orient_matrix_UB_12      0.0642
_diffrn_orient_matrix_UB_13      -0.1642
_diffrn_orient_matrix_UB_21      -0.0635
_diffrn_orient_matrix_UB_22      -0.0043
_diffrn_orient_matrix_UB_23      0.0025
_diffrn_orient_matrix_UB_31      -0.0020
_diffrn_orient_matrix_UB_32      0.0378
_diffrn_orient_matrix_UB_33      0.0149
_diffrn_radiation_detector       CCD
_diffrn_radiation_monochromator  'Graphite Monochromator'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0457
_diffrn_reflns_av_unetI/netI     0.0548
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.990
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            14174
_diffrn_reflns_point_group_measured_fraction_full 0.980
_diffrn_reflns_point_group_measured_fraction_max 0.971
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         27.467
_diffrn_reflns_theta_min         2.596
_diffrn_source                   'Sealed Tube'
_diffrn_source_current           30.0000
_diffrn_source_power             1.5000
_diffrn_source_voltage           50.0000
_exptl_absorpt_coefficient_mu    2.107
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.6584
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear (Rigaku Inc., 2007)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.530
_exptl_crystal_description       rod
_exptl_crystal_F_000             1032
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.335
_refine_diff_density_min         -0.482
_refine_diff_density_rms         0.068
_refine_ls_abs_structure_details
;
 Flack x determined using 1581 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons and Flack (2004), Acta Cryst. A60, s61).
;
_refine_ls_abs_structure_Flack   0.024(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.104
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     269
_refine_ls_number_reflns         4865
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.104
_refine_ls_R_factor_all          0.0546
_refine_ls_R_factor_gt           0.0474
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0156P)^2^+1.6129P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0780
_refine_ls_wR_factor_ref         0.0809
_reflns_Friedel_coverage         0.696
_reflns_Friedel_fraction_full    0.960
_reflns_Friedel_fraction_max     0.944
_reflns_number_gt                4457
_reflns_number_total             4865
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5ob00001g2.cif
_cod_data_source_block           sa3453
_cod_depositor_comments
'Adding full bibliography for 7154320--7154328.cif.'
_cod_database_code               7154326
_shelxl_version_number           2013-4
_diffrn_number_total             2901
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C9(H9), C10(H10)
2.b Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B)
2.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C4(H4), C6(H6), C7(H7), C11(H11), C12(H12), C15(H15), C16(H16),
 C18(H18), C19(H19)
2.d Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C13(H13A,H13B,H13C), C20(H20A,H20B,H20C)
;
_shelx_res_checksum              2254