Stereoselective synthesis of 2,3,4-highly substituted oxetanes by intramolecular C-C bond forming Michael addition.
Ho, Guo-Ming; Li, Yu-Jang; Chemical communications (Cambridge, England) 52 (2016) 12108–12111; doi:10.1039/c6cc06857j

data_7125101
_publ_section_title
;
 Stereoselective synthesis of 2,3,4-highly substituted oxetanes by
 intramolecular C-C bond forming Michael addition.
;
_journal_issue                   81
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              12108
_journal_page_last               12111
_journal_paper_doi               10.1039/c6cc06857j
_journal_volume                  52
_journal_year                    2016
_chemical_formula_moiety         'C15 H25 N O3'
_chemical_formula_sum            'C15 H25 N O3'
_chemical_formula_weight         267.36
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_update_record
;
2015-11-19 deposited with the CCDC.
2016-09-12 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 98.506(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.3879(3)
_cell_length_b                   10.6012(3)
_cell_length_c                   12.1055(3)
_cell_measurement_reflns_used    9957
_cell_measurement_temperature    100.0(2)
_cell_measurement_theta_max      26.32
_cell_measurement_theta_min      2.29
_cell_volume                     1445.37(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      100.0(2)
_diffrn_measured_fraction_theta_full 1
_diffrn_measured_fraction_theta_max 1
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0498
_diffrn_reflns_Laue_measured_fraction_full 1
_diffrn_reflns_Laue_measured_fraction_max 1
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            55506
_diffrn_reflns_point_group_measured_fraction_full 1
_diffrn_reflns_point_group_measured_fraction_max 1
_diffrn_reflns_theta_full        25
_diffrn_reflns_theta_max         27.101
_diffrn_reflns_theta_min         2.292
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  0.9705
_exptl_absorpt_correction_T_min  0.9044
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS, 1996'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.229
_exptl_crystal_density_meas      ?
_exptl_crystal_description       prism
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.309
_refine_diff_density_min         -0.181
_refine_diff_density_rms         0.04
_refine_ls_extinction_coef       0.0029(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     176
_refine_ls_number_reflns         3195
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0495
_refine_ls_R_factor_gt           0.0347
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0307P)^2^+0.7179P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0777
_refine_ls_wR_factor_ref         0.0877
_reflns_number_gt                2572
_reflns_number_total             3195
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6cc06857j2.cif
_cod_data_source_block           i15955
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_crystal_density_meas' value 'not measured' was
changed to '?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7125101