Quaternary β<sup>2,2</sup>-amino acid derivatives by asymmetric addition of isoxazolidin-5-ones to para-quinone methides.
Eitzinger, Andreas; Winter, Michael; Schörgenhumer, Johannes; Waser, Mario; Chemical communications (Cambridge, England) 56 (2020) 579–582; doi:10.1039/c9cc09239k

data_7125903
_publ_section_title
;
 Quaternary \b<sup>2,2</sup>-amino acid derivatives by asymmetric addition
 of isoxazolidin-5-ones to para-quinone methides.
;
_journal_issue                   4
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              579
_journal_page_last               582
_journal_paper_doi               10.1039/c9cc09239k
_journal_volume                  56
_journal_year                    2020
_chemical_formula_sum            'C36 H44 Br N O5'
_chemical_formula_weight         650.63
_chemical_name_common            EIT752
_space_group_crystal_system      triclinic
_space_group_IT_number           1
_space_group_name_Hall           'P 1'
_space_group_name_H-M_alt        'P 1'
_atom_sites_solution_hydrogens   geom
_audit_update_record
;
2019-04-24 deposited with the CCDC.	2019-12-06 downloaded from the CCDC.
;
_cell_angle_alpha                105.3200(10)
_cell_angle_beta                 90.967(2)
_cell_angle_gamma                100.049(2)
_cell_formula_units_Z            2
_cell_length_a                   10.1681(4)
_cell_length_b                   11.5222(4)
_cell_length_c                   15.4679(6)
_cell_measurement_reflns_used    9802
_cell_measurement_temperature    296.(2)
_cell_measurement_theta_max      23.1924
_cell_measurement_theta_min      2.4949
_cell_volume                     1717.20(11)
_computing_cell_refinement       'APEX3 v2017.3-0 (Bruker AXS)'
_computing_data_collection       'Bruker Instrument Service vV6.2.6'
_computing_data_reduction        'SAINT V8.38A (Bruker AXS Inc., 2017)'
_computing_molecular_graphics    'shelXle (C.B. Huebschle, rev 833)'
_computing_publication_material  'publCIF, Diamond 3.2k'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296.(2)
_diffrn_detector_area_resol_mean 10.4167
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker D8 Quest Eco'
_diffrn_measurement_method       omega
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1466
_diffrn_reflns_av_unetI/netI     0.1110
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            49048
_diffrn_reflns_theta_full        23.24
_diffrn_reflns_theta_max         23.24
_diffrn_reflns_theta_min         2.74
_diffrn_source                   Mo
_diffrn_source_type              'sealed tube'
_exptl_absorpt_coefficient_mu    1.237
_exptl_absorpt_correction_T_max  0.88
_exptl_absorpt_correction_T_min  0.67
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 - Bruker AXS area detector scaling and absorption correction
;
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_density_diffrn    1.258
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             684
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent'
_exptl_crystal_size_max          0.666
_exptl_crystal_size_mid          0.183
_exptl_crystal_size_min          0.105
_refine_diff_density_max         0.222
_refine_diff_density_min         -0.297
_refine_ls_abs_structure_details
;

Flack x determined using 1909 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.092(7)
_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     797
_refine_ls_number_reflns         9754
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.1450
_refine_ls_R_factor_gt           0.0652
_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^)+(0.0354P)^2^+0.6095P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1008
_refine_ls_wR_factor_ref         0.1234
_reflns_number_gt                5580
_reflns_number_total             9754
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9cc09239k2.cif
_cod_data_source_block           FAK_EIT752_160119
_cod_database_code               7125903
_shelx_res_checksum              10353
_publcif_funding_html
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