1-Hydroxybenzotriazole-Assisted, N-Heterocyclic Carbene Catalyzed β-Functionalization of Saturated Carboxylic Esters: Access to Spirooxindole Lactones.
Xu, Jianfeng; Yuan, Shiru; Miao, Maozhong; Chen, Zhengkai; The Journal of organic chemistry 81 (2016) 11454–11460; doi:10.1021/acs.joc.6b02032

data_4037338
_publ_section_title
;
 1-Hydroxybenzotriazole-Assisted, N-Heterocyclic Carbene Catalyzed
 \b-Functionalization of Saturated Carboxylic Esters: Access to
 Spirooxindole Lactones.
;
_journal_issue                   22
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              11454
_journal_page_last               11460
_journal_paper_doi               10.1021/acs.joc.6b02032
_journal_volume                  81
_journal_year                    2016
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C36 H26 Br N O3'
_chemical_formula_sum            'C36 H26 Br N O3'
_chemical_formula_weight         600.49
_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
_atom_sites_solution_secondary   difmap
_audit_creation_date             2015-11-06
_audit_creation_method
;
Olex2 1.2
(compiled 2014.03.20 svn.r2914 for OlexSys, GUI svn.r4816)
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.9615(6)
_cell_length_b                   16.4652(13)
_cell_length_c                   19.3782(12)
_cell_measurement_reflns_used    2026
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.5230
_cell_measurement_theta_min      2.7875
_cell_volume                     2859.3(3)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2008)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      293.15
_diffrn_detector_area_resol_mean 10.3592
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Xcalibur, Atlas, Gemini ultra'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_UB_11      0.0287530000
_diffrn_orient_matrix_UB_12      -0.0367437000
_diffrn_orient_matrix_UB_13      0.0136670000
_diffrn_orient_matrix_UB_21      0.0055850000
_diffrn_orient_matrix_UB_22      -0.0161053000
_diffrn_orient_matrix_UB_23      -0.0338637000
_diffrn_orient_matrix_UB_31      0.0735417000
_diffrn_orient_matrix_UB_32      0.0156115000
_diffrn_orient_matrix_UB_33      -0.0027847000
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0318
_diffrn_reflns_av_unetI/netI     0.0575
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            8859
_diffrn_reflns_theta_full        25.35
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         2.79
_diffrn_source                   'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    1.476
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.94431
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
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CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.395
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1232
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.33
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.280
_refine_diff_density_min         -0.344
_refine_diff_density_rms         0.046
_refine_ls_abs_structure_details 'Flack (1983), 1872 Friedel pairs'
_refine_ls_abs_structure_Flack   -0.021(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.011
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     370
_refine_ls_number_reflns         4831
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.011
_refine_ls_R_factor_all          0.0647
_refine_ls_R_factor_gt           0.0393
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0244P)^2^+0.0410P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0633
_refine_ls_wR_factor_ref         0.0717
_reflns_number_gt                3683
_reflns_number_total             4831
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo6b02032_si_002.cif
_cod_data_source_block           151106_czk1_30
_cod_database_code               4037338
_chemical_oxdiff_formula         'c10 h10 n2 o8 Br1'
_reflns_odcompleteness_completeness 99.52
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     26.32
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Ternary CH refined with riding coordinates:
 C9(H9)
2.b Secondary CH2 refined with riding coordinates:
 C10(H10A,H10B)
2.c Aromatic/amide H refined with riding coordinates:
 C1(H1), C2(H2), C4(H4), C13(H13), C14(H14), C15(H15), C16(H16), C17(H17),
 C20(H20), C21(H21), C22(H22), C23(H23), C24(H24), C26(H26), C27(H27), C28(H28),
  C29(H29), C30(H30), C32(H32), C33(H33), C34(H34), C35(H35), C36(H36)
;