Exploring Morita-Baylis-Hillman reactions of p-quinols.
Redondo, María C; Ribagorda, María; Carreño, M Carmen; Organic letters 12 (2010) 568–571; doi:10.1021/ol902763g

data_1503401
_publ_section_title
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 Exploring Morita-Baylis-Hillman reactions of p-quinols.
;
_journal_issue                   3
_journal_name_full               'Organic letters'
_journal_page_first              568
_journal_page_last               571
_journal_paper_doi               10.1021/ol902763g
_journal_volume                  12
_journal_year                    2010
_chemical_formula_sum            'C23 H18 N2 O4'
_chemical_formula_weight         386.39
_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                 105.193(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.3330(6)
_cell_length_b                   22.7385(15)
_cell_length_c                   10.3520(7)
_cell_measurement_reflns_used    9906
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      34.48
_cell_measurement_theta_min      2.69
_cell_volume                     1892.9(2)
_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 0.942
_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  0.0344
_diffrn_reflns_av_sigmaI/netI    0.0233
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       35
_diffrn_reflns_limit_k_min       -36
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            52915
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         34.83
_diffrn_reflns_theta_min         1.79
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.9814
_exptl_absorpt_correction_T_min  0.9723
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.356
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             808
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.543
_refine_diff_density_min         -0.280
_refine_diff_density_rms         0.084
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.071
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     334
_refine_ls_number_reflns         7755
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.071
_refine_ls_R_factor_all          0.0532
_refine_ls_R_factor_gt           0.0435
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0787P)^2^+0.3282P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1214
_refine_ls_wR_factor_ref         0.1322
_reflns_number_gt                6512
_reflns_number_total             7755
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol902763g_si_004.cif
_cod_data_source_block           datos__0m
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               1503401