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_1555414
_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         'C19 H17 Br Cl N O5 S'
_chemical_formula_sum            'C19 H17 Br Cl N O5 S'
_chemical_formula_weight         486.76
_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'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2015-06-18
_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            4
_cell_length_a                   9.155(3)
_cell_length_b                   9.470(3)
_cell_length_c                   23.095(7)
_cell_measurement_reflns_used    6852
_cell_measurement_temperature    173.1500
_cell_measurement_theta_max      27.4836
_cell_measurement_theta_min      2.1505
_cell_volume                     2002.3(11)
_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 0.998
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_details
;
scan:
	Number of images: 360
	           Slice: -110.0000 - 70.0000
	     Image width: 0.5000
	        Exp time: 4.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	             Chi: 45.0000
	             Phi: 0.0000
	             XTD: 45.0130
	          2theta: -20.1171
scan:
	Number of images: 240
	           Slice: -80.0000 - 40.0000
	     Image width: 0.5000
	        Exp time: 4.0000
	   Rotation axis: Omega
	           Omega: 0.0000
	             Chi: 45.0000
	             Phi: 90.0000
	             XTD: 45.0130
	          2theta: -20.1171
;
_diffrn_measurement_device
;
Saturn724+ (2x2 bin mode)
;
_diffrn_measurement_device_details
;
AFC10: Fixed Chi 2 circle
;
_diffrn_measurement_device_type  'MM007-HF CCD(Saturn 724+)'
_diffrn_measurement_method       '\w scans at fixed \c = 45\%'
_diffrn_orient_matrix_type       d*Trek
_diffrn_orient_matrix_UB_11      -0.0374
_diffrn_orient_matrix_UB_12      -0.0812
_diffrn_orient_matrix_UB_13      0.0628
_diffrn_orient_matrix_UB_21      0.0047
_diffrn_orient_matrix_UB_22      -0.0659
_diffrn_orient_matrix_UB_23      -0.0823
_diffrn_orient_matrix_UB_31      0.0406
_diffrn_orient_matrix_UB_32      -0.0104
_diffrn_orient_matrix_UB_33      0.0107
_diffrn_radiation_detector       CCD
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0527
_diffrn_reflns_av_unetI/netI     0.0450
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            13489
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.993
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         27.495
_diffrn_reflns_theta_min         2.324
_diffrn_source                   'Rotating Anode'
_diffrn_source_current           24.0000
_diffrn_source_power             1.2000
_diffrn_source_voltage           50.0000
_exptl_absorpt_coefficient_mu    2.321
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.5607
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear (Rigaku Inc., 2007)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.615
_exptl_crystal_description       plate
_exptl_crystal_F_000             984
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.578
_refine_diff_density_min         -0.406
_refine_diff_density_rms         0.075
_refine_ls_abs_structure_details
;
 Flack x determined using 1556 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.008(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.097
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     256
_refine_ls_number_reflns         4571
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.097
_refine_ls_R_factor_all          0.0493
_refine_ls_R_factor_gt           0.0459
_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^)+(0.0469P)^2^+1.1605P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1068
_refine_ls_wR_factor_ref         0.1102
_reflns_Friedel_coverage         0.743
_reflns_Friedel_fraction_full    0.988
_reflns_Friedel_fraction_max     0.988
_reflns_number_gt                4301
_reflns_number_total             4571
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol5b02817_si_005.cif
_cod_data_source_block           mx3859
_cod_original_cell_volume        2002.4(11)
_cod_database_code               1555414
_diffrn_number_total             2650
_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:
 C2(H2)
2.b Secondary CH2 refined with riding coordinates:
 C11(H11A,H11B)
2.c Aromatic/amide H refined with riding coordinates:
 C5(H5), C14(H14), C15(H15), C17(H17), C18(H18)
2.d Idealised Me refined as rotating group:
 C9(H9A,H9B,H9C), C10(H10A,H10B,H10C), C19(H19A,H19B,H19C)
;
_shelx_res_checksum              91865
_shelx_hkl_checksum              71687
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'