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_1507611
_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 O2'
_chemical_formula_sum            'C14 H15 N O2'
_chemical_formula_weight         229.27
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_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                 98.657(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.0675(3)
_cell_length_b                   6.0052(2)
_cell_length_c                   21.3783(8)
_cell_measurement_reflns_used    8194
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     1150.83(7)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_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_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type
'Bruker-Nonius Roper CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0413
_diffrn_reflns_av_sigmaI/netI    0.0372
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            12191
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.40
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.9921
_exptl_absorpt_correction_T_min  0.9520
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2007/2 (Sheldrick, G.M., 2007)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.323
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'Cut Plate'
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.287
_refine_diff_density_min         -0.263
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.015
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     155
_refine_ls_number_reflns         2628
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.015
_refine_ls_R_factor_all          0.0563
_refine_ls_R_factor_gt           0.0435
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0826P)^2^+0.2190P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1219
_refine_ls_wR_factor_ref         0.1314
_reflns_number_gt                2144
_reflns_number_total             2628
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            ol300605y_si_002.cif
_cod_data_source_block           Compound_4b
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 2(1)/n'
_cod_database_code               1507611