Chiral Phosphine Oxide-Sc(OTf)3 Complex Catalyzed Enantioselective Bromoaminocyclization of 2-Benzofuranylmethyl N-Tosylcarbamates. Approach to a Novel Class of Optically Active Spiro Compounds.
Li, Zequan; Shi, Yian; Organic letters 17 (2015) 5752–5755; doi:10.1021/acs.orglett.5b02817

data_1555413
_publ_section_title
;
 Chiral Phosphine Oxide-Sc(OTf)3 Complex Catalyzed Enantioselective
 Bromoaminocyclization of 2-Benzofuranylmethyl N-Tosylcarbamates. Approach
 to a Novel Class of Optically Active Spiro Compounds.
;
_journal_issue                   23
_journal_name_full               'Organic letters'
_journal_page_first              5752
_journal_page_last               5755
_journal_paper_doi               10.1021/acs.orglett.5b02817
_journal_volume                  17
_journal_year                    2015
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C21 H17 N O5 S2'
_chemical_formula_sum            'C21 H17 N O5 S2'
_chemical_formula_weight         427.48
_space_group_crystal_system      orthorhombic
_space_group_IT_number           20
_space_group_name_Hall           'C 2c 2'
_space_group_name_H-M_alt        'C 2 2 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2015-08-10
_audit_creation_method
;
Olex2 1.2
(compiled 2015.01.26 svn.r3150 for OlexSys, GUI svn.r4998)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   11.289(3)
_cell_length_b                   10.612(3)
_cell_length_c                   32.425(6)
_cell_measurement_reflns_used    5927
_cell_measurement_temperature    173.1500
_cell_measurement_theta_max      27.4774
_cell_measurement_theta_min      1.2560
_cell_volume                     3884.5(17)
_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  'CIFTAB (Sheldrick, 2013)'
_computing_structure_refinement  'SHELXL (Sheldrick, 2014)'
_computing_structure_solution
;
'SHELXT (Sheldrick, 2014)'
;
_diffrn_ambient_temperature      173.1500
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_details
;
scan:
	Number of images: 360
	           Slice: -110.0000 - 70.0000
	     Image width: 0.5000
	        Exp time: 7.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	             Chi: 45.0000
	             Phi: 0.0000
	             XTD: 45.1183
	          2theta: -19.7920
scan:
	Number of images: 360
	           Slice: -110.0000 - 70.0000
	     Image width: 0.5000
	        Exp time: 7.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	             Chi: 45.0000
	             Phi: 180.0000
	             XTD: 45.1183
	          2theta: -19.7920
scan:
	Number of images: 264
	           Slice: -110.0000 - 22.0000
	     Image width: 0.5000
	        Exp time: 7.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	             Chi: 45.0000
	             Phi: 90.0000
	             XTD: 45.1183
	          2theta: -19.7920
;
_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      0.0355
_diffrn_orient_matrix_UB_12      -0.1220
_diffrn_orient_matrix_UB_13      -0.0226
_diffrn_orient_matrix_UB_21      -0.0006
_diffrn_orient_matrix_UB_22      0.0054
_diffrn_orient_matrix_UB_23      -0.0304
_diffrn_orient_matrix_UB_31      0.1266
_diffrn_orient_matrix_UB_32      0.0279
_diffrn_orient_matrix_UB_33      0.0025
_diffrn_radiation_detector       CCD
_diffrn_radiation_monochromator  'Graphite Monochromator'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0781
_diffrn_reflns_av_unetI/netI     0.0431
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       42
_diffrn_reflns_limit_l_min       -41
_diffrn_reflns_number            20353
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.485
_diffrn_reflns_theta_min         2.708
_diffrn_source                   'Sealed Tube'
_diffrn_source_current           30.0000
_diffrn_source_power             1.5000
_diffrn_source_voltage           50.0000
_exptl_absorpt_coefficient_mu    0.309
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7397
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear (Rigaku Inc., 2007)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.462
_exptl_crystal_description       block
_exptl_crystal_F_000             1776
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.319
_refine_diff_density_min         -0.414
_refine_diff_density_rms         0.075
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.22(19)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.171
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     264
_refine_ls_number_reflns         4427
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.171
_refine_ls_R_factor_all          0.0712
_refine_ls_R_factor_gt           0.0696
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0260P)^2^+15.4193P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1557
_refine_ls_wR_factor_ref         0.1564
_reflns_Friedel_coverage         0.789
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.997
_reflns_number_gt                4319
_reflns_number_total             4427
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol5b02817_si_010.cif
_cod_data_source_block           a
_cod_database_code               1555413
_diffrn_number_total             4507
_olex2_refinement_description
;
1. Twinned data refinement
 Scales: 0.78(19) 0.22(19)
2. 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
3.a Ternary CH refined with riding coordinates:
 C2(H2)
3.b Secondary CH2 refined with riding coordinates:
 C13(H13A,H13B)
3.c Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C6(H6), C7(H7), C10(H10), C11(H11), C12(H12), C16(H16),
 C17(H17), C19(H19), C20(H20)
3.d Idealised Me refined as rotating group:
 C21(H21A,H21B,H21C)
;
_shelx_res_checksum              78652
_shelx_hkl_checksum              12557
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'