Reversal of Diastereoselection in the Conjugate Addition of Cuprates to Unsaturated Lactams.
Wright, Stephen W.; Choi, Chulho; Chung, Seungwon; Boscoe, Brian P.; Drozda, Susan E.; Mousseau, James J.; Trzupek, John D.; Organic letters 17 (2015) 5204–5207; doi:10.1021/acs.orglett.5b02533

data_1555345
_publ_section_title
;
 Reversal of Diastereoselection in the Conjugate Addition of Cuprates to
 Unsaturated Lactams.
;
_journal_issue                   21
_journal_name_full               'Organic letters'
_journal_page_first              5204
_journal_page_last               5207
_journal_paper_doi               10.1021/acs.orglett.5b02533
_journal_volume                  17
_journal_year                    2015
_chemical_absolute_configuration rm
_chemical_formula_sum            'C15 H19 N O3'
_chemical_formula_weight         261.31
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 94.530(5)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   5.8171(5)
_cell_length_b                   7.1215(7)
_cell_length_c                   16.2736(15)
_cell_measurement_temperature    123(2)
_cell_volume                     672.05(11)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'Bruker D8 QUEST diffractometer'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0547
_diffrn_reflns_av_unetI/netI     0.0584
_diffrn_reflns_Laue_measured_fraction_full 0.981
_diffrn_reflns_Laue_measured_fraction_max 0.981
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            5278
_diffrn_reflns_point_group_measured_fraction_full 0.834
_diffrn_reflns_point_group_measured_fraction_max 0.834
_diffrn_reflns_theta_full        67.452
_diffrn_reflns_theta_max         67.452
_diffrn_reflns_theta_min         2.724
_exptl_absorpt_coefficient_mu    0.728
_exptl_crystal_density_diffrn    1.291
_exptl_crystal_description       blade
_exptl_crystal_F_000             280
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.140
_exptl_crystal_size_min          0.020
_refine_diff_density_max         0.201
_refine_diff_density_min         -0.177
_refine_diff_density_rms         0.047
_refine_ls_abs_structure_details
;
 Flack x determined using 532 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.2(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.061
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     175
_refine_ls_number_reflns         2009
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0607
_refine_ls_R_factor_gt           0.0497
_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^)+(0.0795P)^2^+0.0546P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1277
_refine_ls_wR_factor_ref         0.1372
_reflns_Friedel_coverage         0.563
_reflns_Friedel_fraction_full    0.659
_reflns_Friedel_fraction_max     0.658
_reflns_number_gt                1713
_reflns_number_total             2009
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol5b02533_si_006.cif
_cod_data_source_block           Z597
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               1555345
_shelx_estimated_absorpt_t_min   0.880
_shelx_estimated_absorpt_t_max   0.986
_shelx_res_checksum              91025
_shelx_hkl_checksum              74369