Enantioselective γ-Alkylation of α,β-Unsaturated Malonates and Ketoesters by a Sequential Ir-Catalyzed Asymmetric Allylic Alkylation/Cope Rearrangement.
Liu, Wen-Bo; Okamoto, Noriko; Alexy, Eric J.; Hong, Allen Y.; Tran, Kristy; Stoltz, Brian M.; Journal of the American Chemical Society 138 (2016) 5234–5237; doi:10.1021/jacs.6b02153

data_4130308
_publ_section_title
;
 Enantioselective \g-Alkylation of \a,\b-Unsaturated Malonates and
 Ketoesters by a Sequential Ir-Catalyzed Asymmetric Allylic
 Alkylation/Cope Rearrangement.
;
_journal_issue                   16
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              5234
_journal_page_last               5237
_journal_paper_doi               10.1021/jacs.6b02153
_journal_volume                  138
_journal_year                    2016
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C21 H26 O4'
_chemical_formula_sum            'C21 H26 O4'
_chemical_formula_weight         342.42
_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
_audit_creation_date             2016-01-06
_audit_creation_method
;
Olex2 1.2
(compiled 2015.09.30 svn.r3233 for OlexSys, GUI svn.r5103),
 SHELXL-2014,
 and manual edit
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.7585(6)
_cell_length_b                   9.1039(7)
_cell_length_c                   26.2256(17)
_cell_measurement_reflns_used    9760
_cell_measurement_temperature    100
_cell_measurement_theta_max      78.16
_cell_measurement_theta_min      5.14
_cell_volume                     1852.4(2)
_computing_cell_refinement       'SAINT V8.34A (Bruker-AXS, 2007)'
_computing_data_collection       'APEX2 2015.9-0 (Bruker-AXS, 2007)'
_computing_data_reduction        'SAINT V8.34A (Bruker-AXS, 2007)'
_computing_molecular_graphics    'DIAMOND 3 (Crystal Impact, 1999)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'XT-2014/4 (Sheldrick, 2012)'
_diffrn_ambient_temperature      100
_diffrn_detector                 'CMOS Area Detector'
_diffrn_detector_area_resol_mean 10.24
_diffrn_detector_type            'Bruker PHOTON 100 CMOS'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device       '\k-geometry diffractometer'
_diffrn_measurement_device_type  'Bruker D8 VENTURE Kappa Duo PHOTON 100 CMOS'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'multilayer mirrors'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0517
_diffrn_reflns_av_unetI/netI     0.0226
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            39232
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        67.000
_diffrn_reflns_theta_max         78.511
_diffrn_reflns_theta_min         3.370
_diffrn_source                   'I\mS HB micro-focus sealed tube'
_diffrn_source_current           1
_diffrn_source_power             0.05
_diffrn_source_type              'Incoatech I\mS HB'
_diffrn_source_voltage           50
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.674
_exptl_absorpt_correction_T_max  0.9612
_exptl_absorpt_correction_T_min  0.9073
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction. wR2(int) was 0.0832 before and 0.0758 after correction. The Ratio of minimum to maximum transmission is 0.9439. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.228
_exptl_crystal_description       block
_exptl_crystal_F_000             736
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.476
_refine_diff_density_min         -0.182
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details
;
 Flack x determined using 1554 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.12(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.078
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     228
_refine_ls_number_reflns         3967
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.078
_refine_ls_R_factor_all          0.0418
_refine_ls_R_factor_gt           0.0402
_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^)+(0.0473P)^2^+0.7938P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1023
_refine_ls_wR_factor_ref         0.1032
_reflns_Friedel_coverage         0.726
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.991
_reflns_number_gt                3829
_reflns_number_total             3967
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja6b02153_si_003.cif
_cod_data_source_block           p15559
_cod_database_code               4130308
_shelx_estimated_absorpt_t_max   0.894
_shelx_estimated_absorpt_t_min   0.871
_refine_ls_abs_structure_hooft   0.16(6)
_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:
 C12(H12A,H12B), C13(H13A,H13B), C14(H14A,H14B), C15(H15A,H15B), C16(H16A,H16B)
2.c Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C6(H6), C7(H7), C8(H8), C9(H9), C17(H17)
2.d X=CH2 refined with riding coordinates:
 C10(H10A,H10B)
2.e Idealised Me refined as rotating group:
 C19(H19A,H19B,H19C), C21(H21A,H21B,H21C)
;
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'