Pd-Catalyzed Asymmetric Allylic Substitution Cascade via An Asymmetric Desymmetrization for the Synthesis of Bicyclic Dihydrofurans
Xu, Kai; Liu, Hao; Hou, Yilin; Shen, Jiefeng; Liu, Delong; Zhang, Wanbin; Chemical Communications  (2019) –; doi:10.1039/C9CC07204G

data_7124301
_publ_section_title
;
 Pd-Catalyzed Asymmetric Allylic Substitution Cascade via An Asymmetric
 Desymmetrization for the Synthesis of Bicyclic Dihydrofurans
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/C9CC07204G
_journal_year                    2019
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C15 H17 N O'
_chemical_formula_sum            'C15 H17 N O'
_chemical_formula_weight         227.29
_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'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_block_doi                 10.5517/ccdc.csd.cc2396rd
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2019-08-05 deposited with the CCDC.    2019-10-11 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.93000(10)
_cell_length_b                   8.7765(2)
_cell_length_c                   24.7421(6)
_cell_measurement_reflns_used    7455
_cell_measurement_temperature    297(2)
_cell_measurement_theta_max      68.02
_cell_measurement_theta_min      3.57
_cell_volume                     1287.69(5)
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      297(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0433
_diffrn_reflns_av_unetI/netI     0.0224
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            18841
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.308
_diffrn_reflns_theta_min         3.573
_exptl_absorpt_coefficient_mu    0.571
_exptl_crystal_colour            coulorless
_exptl_crystal_density_diffrn    1.172
_exptl_crystal_description       block
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.180
_exptl_crystal_size_min          0.160
_exptl_transmission_factor_max   0.7531
_exptl_transmission_factor_min   0.6789
_refine_diff_density_max         0.103
_refine_diff_density_min         -0.142
_refine_diff_density_rms         0.026
_refine_ls_abs_structure_details
;
 Flack x determined using 825 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.16(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     154
_refine_ls_number_reflns         2353
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0424
_refine_ls_R_factor_gt           0.0387
_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^)+(0.0619P)^2^+0.0791P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1033
_refine_ls_wR_factor_ref         0.1079
_reflns_Friedel_coverage         0.681
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.997
_reflns_number_gt                2161
_reflns_number_total             2353
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9cc07204g2.cif
_cod_data_source_block           b_a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_absolute_configuration' value 'AD' changed to 'ad'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 
;
_cod_database_code               7124301
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.894
_shelx_estimated_absorpt_t_max   0.914
_shelx_res_checksum              15534