Stereodivergent Synthesis via Iridium-Catalyzed Asymmetric Double Allylic Alkylation of Cyanoacetate
Shen, Chong; Cheng, Xiang; Wei, Liang; Wang, Ruo-Qing; Wang, Chun-Jiang; Chemical Science  (2021) –; doi:10.1039/D1SC06115A

data_1565337
_publ_section_title
;
 Stereodivergent Synthesis via Iridium-Catalyzed Asymmetric Double Allylic
 Alkylation of Cyanoacetate
;
_journal_name_full               'Chemical Science'
_journal_paper_doi               10.1039/D1SC06115A
_journal_year                    2021
_chemical_formula_moiety         'C25 H25 Br2 N O2'
_chemical_formula_sum            'C25 H25 Br2 N O2'
_chemical_formula_weight         531.28
_space_group_crystal_system      monoclinic
_space_group_IT_number           11
_space_group_name_Hall           '-P 2yb'
_space_group_name_H-M_alt        'P 1 21/m 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_audit_creation_date             2021-01-18
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2021-07-14 deposited with the CCDC.	2021-11-19 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 104.4620(10)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   5.982
_cell_length_b                   20.17050(10)
_cell_length_c                   9.655
_cell_measurement_reflns_used    2083
_cell_measurement_temperature    100.00(10)
_cell_measurement_theta_max      67.495
_cell_measurement_theta_min      4.384
_cell_volume                     1128.058(8)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.00(10)
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker SMART APEX2 area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0370
_diffrn_reflns_av_unetI/netI     0.0135
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            22395
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        66.500
_diffrn_reflns_theta_max         67.495
_diffrn_reflns_theta_min         4.384
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_exptl_absorpt_coefficient_mu    4.724
_exptl_absorpt_correction_T_max  0.685
_exptl_absorpt_correction_T_min  0.449
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.564
_exptl_crystal_description       prism
_exptl_crystal_F_000             536
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.343
_refine_diff_density_min         -0.351
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     162
_refine_ls_number_reflns         2083
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.0206
_refine_ls_R_factor_gt           0.0205
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 w=1/[\s^2^(Fo^2^)+(0.0236P)^2^+0.9886P]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0514
_refine_ls_wR_factor_ref         0.0514
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2075
_reflns_number_total             2083
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1sc06115a2.cif
_cod_data_source_block           wang1
_cod_database_code               1565337
_shelxl_version_number           2013-2
_shelx_estimated_absorpt_t_max   0.704
_shelx_estimated_absorpt_t_min   0.331
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Others
 Fixed Sof: H15A(0.5) H15B(0.5) H15C(0.5)
3.a Ternary CH refined with riding coordinates:
 C3(H3)
3.b Aromatic/amide H refined with riding coordinates:
 C7(H7), C8(H8), C10(H10), C11(H11)
3.c Idealised Me refined as rotating group:
 C14(H14A,H14B,H14C), C15(H15A,H15B,H15C)
;
_shelx_res_checksum              28497
_olex2_submission_special_instructions 'No special instructions were received'