Semipinacol Rearrangement of Cis-Fused β-Lactam Diols into Keto-Bridged Bicyclic Lactams.
Grainger, Richard S.; Betou, Marie; Male, Louise; Pitak, Mateusz B.; Coles, Simon J.; Organic letters 14 (2012) 2234–2237; doi:10.1021/ol300605y

data_1507613
_publ_section_title
;
 Semipinacol Rearrangement of Cis-Fused \b-Lactam Diols into Keto-Bridged
 Bicyclic Lactams.
;
_journal_issue                   9
_journal_name_full               'Organic letters'
_journal_page_first              2234
_journal_page_last               2237
_journal_paper_doi               10.1021/ol300605y
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C14 H15 N O5 S'
_chemical_formula_sum            'C14 H15 N O5 S'
_chemical_formula_weight         309.33
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   11.0852(2)
_cell_length_b                   7.98040(10)
_cell_length_c                   31.3518(5)
_cell_measurement_reflns_used    8384
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      70.732
_cell_measurement_theta_min      2.819
_cell_volume                     2773.52(8)
_computing_cell_refinement       'SAINT V6.28A (Bruker, 1997)'
_computing_data_collection       'SMART V5.626 (Bruker, 1997)'
_computing_data_reduction        'SAINT V6.28A (Bruker, 1997)'
_computing_molecular_graphics
;
OLEX2 (Dolomanov, O.V., Bourhis, L.J., Gildea, R.J., Howard, J.A.K,
& Puschmann, H., 2009)
;
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker SMART 6000'
_diffrn_measurement_method       'Omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0212
_diffrn_reflns_av_sigmaI/netI    0.0107
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            20175
_diffrn_reflns_theta_full        68.24
_diffrn_reflns_theta_max         68.24
_diffrn_reflns_theta_min         6.92
_exptl_absorpt_coefficient_mu    2.288
_exptl_absorpt_correction_T_max  0.6576
_exptl_absorpt_correction_T_min  0.6097
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2.07 (Sheldrick, G.M., 2007)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.482
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1296
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.241
_refine_diff_density_min         -0.310
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.068
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     191
_refine_ls_number_reflns         2528
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.068
_refine_ls_R_factor_all          0.0285
_refine_ls_R_factor_gt           0.0281
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0389P)^2^+1.2443P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0752
_refine_ls_wR_factor_ref         0.0755
_reflns_number_gt                2473
_reflns_number_total             2528
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            ol300605y_si_004.cif
_cod_data_source_block           Compound_10b
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P bca'
_cod_database_code               1507613