Geometry-selective synthesis of E or Z N-vinyl ureas (N-carbamoyl enamines).
Lefranc, Julien; Tetlow, Daniel J.; Donnard, Morgan; Minassi, Alberto; Gálvez, Erik; Clayden, Jonathan; Organic letters 13 (2011) 296–299; doi:10.1021/ol1027442

data_1501897
_publ_section_title
;
 Geometry-selective synthesis of E or Z N-vinyl ureas (N-carbamoyl
 enamines).
;
_journal_issue                   2
_journal_name_full               'Organic letters'
_journal_page_first              296
_journal_page_last               299
_journal_paper_doi               10.1021/ol1027442
_journal_volume                  13
_journal_year                    2011
_chemical_formula_sum            'C18 H19 Cl N2 O'
_chemical_formula_weight         314.80
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 99.836(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   16.398(3)
_cell_length_b                   7.6279(14)
_cell_length_c                   13.045(2)
_cell_measurement_reflns_used    495
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.1335
_cell_measurement_theta_min      2.523
_cell_volume                     1607.7(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0870
_diffrn_reflns_av_sigmaI/netI    0.1657
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            9022
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         26.41
_diffrn_reflns_theta_min         1.26
_exptl_absorpt_coefficient_mu    0.241
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.301
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.274
_refine_diff_density_min         -0.245
_refine_diff_density_rms         0.061
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.859
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     202
_refine_ls_number_reflns         3287
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.859
_refine_ls_R_factor_all          0.1268
_refine_ls_R_factor_gt           0.0581
_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^)+(0.0290P)^2^+0.8904P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0917
_refine_ls_wR_factor_ref         0.1377
_reflns_number_gt                1649
_reflns_number_total             3287
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol1027442_si_002.cif
_cod_data_source_block           s3323p
_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.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        1607.8(5)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1501897