Synthesis, Structure, and E-Z Isomerization of β-(Hetero)aryl-α,β-enals
Patricia Martínez-Bescos; Fernando Cagide-Fagín; Luis F. Roa; Juan Carlos Ortiz-Lara; Krzysztof Kierus; Lidia Ozores-Viturro; Marta Fernández-González; Ricardo Alonso; Journal of Organic Chemistry 73 (2008) 3745–3753; doi:10.1021/jo702731b

data_4023405
_publ_contact_author_address
'Department of Organic Chemistry, USC, 15782 Santiago de Compostela, Spain'
_publ_contact_author_email       qoraa@usc.es
_publ_contact_author_fax         +34981595012
_publ_contact_author_name        'Ricardo Alonso Alonso'
_publ_contact_author_phone       +34981547085
_publ_section_title
;
 Synthesis, Structure, and E-Z Isomerization of
 \b-(Hetero)aryl-\a,\b-enals
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              3745
_journal_page_last               3753
_journal_paper_doi               10.1021/jo702731b
_journal_volume                  73
_journal_year                    2008
_chemical_formula_moiety         'C7 H5 N O3 S'
_chemical_formula_sum            'C7 H5 N O3 S'
_chemical_formula_weight         183.19
_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_date             2007-02-15T13:02:11-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_update_record
;
2007-02-15 # Formatted by publCIF
;
_cell_angle_alpha                90
_cell_angle_beta                 103.556(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.4333(3)
_cell_length_b                   5.3908(2)
_cell_length_c                   16.6554(6)
_cell_measurement_reflns_used    2580
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.54
_cell_measurement_theta_min      3.09
_cell_volume                     736.10(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    'Bruker SHELXTL'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1
_diffrn_measured_fraction_theta_max 1
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'BRUKER APPEX-II CCD'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.0531
_diffrn_reflns_av_unetI/netI     0.0352
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            13516
_diffrn_reflns_theta_full        27.17
_diffrn_reflns_theta_max         27.17
_diffrn_reflns_theta_min         2.48
_exptl_absorpt_coefficient_mu    0.398
_exptl_absorpt_correction_T_max  0.9842
_exptl_absorpt_correction_T_min  0.8798
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'BRUKER SADABS'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.653
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             376
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.356
_refine_diff_density_min         -0.222
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     147
_refine_ls_number_reflns         1630
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.06
_refine_ls_R_factor_all          0.0532
_refine_ls_R_factor_gt           0.0352
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0402P)^2^+0.2502P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0763
_refine_ls_wR_factor_ref         0.0825
_reflns_number_gt                1282
_reflns_number_total             1630
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo702731b-File007.cif
_cod_data_source_block           ra02pt1n
_cod_original_sg_symbol_Hall     -P2ybc
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4023405