A rearrangement of 3-hydroxyazetidines into 2-oxazolines.
Ruggeri, Michele; Dombrowski, Amanda W.; Djuric, Stevan W.; Baxendale, Ian R.; The Journal of organic chemistry  (2020) –; doi:10.1021/acs.joc.0c00656

data_4038346
_publ_section_title
;
 A rearrangement of 3-hydroxyazetidines into 2-oxazolines.
;
_journal_name_full               'The Journal of organic chemistry'
_journal_paper_doi               10.1021/acs.joc.0c00656
_journal_year                    2020
_chemical_formula_moiety         'C37 H40 N4 O6 S2'
_chemical_formula_sum            'C37 H40 N4 O6 S2'
_chemical_formula_weight         700.85
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_date             2020-01-30
_audit_creation_method
;
Olex2 1.3-alpha
(compiled Nov 21 2019 18:26:39 for OlexSys, GUI svn.r6003)
;
_cell_angle_alpha                90
_cell_angle_beta                 94.212(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   15.0965(9)
_cell_length_b                   12.1682(7)
_cell_length_c                   21.8118(12)
_cell_measurement_reflns_used    9891
_cell_measurement_temperature    120
_cell_measurement_theta_max      27.15
_cell_measurement_theta_min      2.31
_cell_volume                     3995.9(4)
_computing_cell_refinement       'SAINT v8.38A (Bruker, 2017)'
_computing_data_collection       'APEX3 v.2016.1-0 (Bruker, 2016)'
_computing_data_reduction        'SAINT v8.38A (Bruker, 2017)'
_computing_molecular_graphics    'Olex2 1.3-alpha (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3-alpha (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015a)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2015)'
_diffrn_ambient_temperature      120
_diffrn_detector                 'Bruker PHOTON 100 CMOS'
_diffrn_detector_area_resol_mean 10.4
_diffrn_detector_type            'CMOS sensor'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device       '3-circle area detector diffractometer'
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'focusing mirrors'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0435
_diffrn_reflns_av_unetI/netI     0.0288
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            36802
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        27.481
_diffrn_reflns_theta_max         27.481
_diffrn_reflns_theta_min         2.152
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_current           1.0
_diffrn_source_power             0.05
_diffrn_source_type              'Incoatec I\mS microsource'
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.179
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9394
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker, 2016) was used for absorption correction.
wR2(int) was 0.0590 before and 0.0416 after correction.
The Ratio of minimum to maximum transmission is 0.9394.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.165
_exptl_crystal_description       block
_exptl_crystal_F_000             1480
_exptl_crystal_size_max          0.401
_exptl_crystal_size_mid          0.365
_exptl_crystal_size_min          0.282
_refine_diff_density_max         0.293
_refine_diff_density_min         -0.321
_refine_diff_density_rms         0.044
_refine_ls_extinction_coef       0.0013(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick, 2015a)'
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     229
_refine_ls_number_reflns         4596
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0586
_refine_ls_R_factor_gt           0.0385
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0588P)^2^+1.9617P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0995
_refine_ls_wR_factor_ref         0.1092
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3412
_reflns_number_total             4596
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            20srv032.cif
_cod_data_source_block           20srv032
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_diffrn_radiation_probe' value 'X-ray' was changed to
'x-ray' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
;
_cod_database_code               4038346
_smtbx_masks_void_probe_radius   1.2
_smtbx_masks_void_truncation_radius 1.2
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2. Others
 Uiso(H7A)=Uiso(H7B)=Uiso(H7C)=FVAR(1)
 Fixed Sof: H19A(0.5) H19B(0.5)
3.a Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B), C10(H10A,H10B), C18(H18A,H18B), C19(H19A,H19B)
3.b Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C5(H5), C6(H6), C12(H12), C13(H13), C14(H14), C15(H15),
 C16(H16)
3.c Idealised Me refined as rotating group:
 C7(H7A,H7B,H7C)
;
_oslims_operator_name            'Dr A Batsanov'
_oslims_operator_uuid            642c0cab-15e1-4db6-aabf-d1e3f44b6814
_oslims_submitter_name           'Mr Michele Ruggeri'
_oslims_submitter_uuid           1a56f251-525c-414f-9d37-3e740585b168
_shelx_estimated_absorpt_t_min   0.932
_shelx_estimated_absorpt_t_max   0.951
_shelx_res_checksum              19245
_shelx_shelxl_version_number     2018/3