An efficient organocatalytic enantioselective Michael addition of aryl methyl ketones with 2-furanones: highly functionalized chiral 3,4-substituted lactones.
Wang, Wei; Wang, Junfeng; Zhou, Shuo; Sun, Qi; Ge, Zemei; Wang, Xin; Li, Runtao; Chemical communications (Cambridge, England) 49 (2013) 1333–1335; doi:10.1039/c2cc35488h

data_7112295
_publ_section_title
;
 An efficient organocatalytic enantioselective Michael addition of aryl
 methyl ketones with 2-furanones: highly functionalized chiral
 3,4-substituted lactones.
;
_journal_issue                   13
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              1333
_journal_page_last               1335
_journal_paper_doi               10.1039/c2cc35488h
_journal_volume                  49
_journal_year                    2013
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C17 H19 Br O5 '
_chemical_formula_sum            'C17 H19 Br O5'
_chemical_formula_weight         383.24
_chemical_name_systematic
;
?
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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            4
_cell_length_a                   6.941(3)
_cell_length_b                   11.055(4)
_cell_length_c                   22.261(8)
_cell_measurement_reflns_used    1859
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      72.0
_cell_measurement_theta_min      27.3
_cell_volume                     1708.1(11)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_molecular_graphics    ORTEPII(Johnson,1976)andPLUTON(Spek,1990)
_computing_publication_material  'SHELXL97(Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_detector_area_resol_mean 22.2222
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'MicroMax 002+'
_diffrn_measurement_method       \f\k
_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  0.0619
_diffrn_reflns_av_sigmaI/netI    0.0498
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            15439
_diffrn_reflns_theta_full        72.64
_diffrn_reflns_theta_max         72.64
_diffrn_reflns_theta_min         3.97
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.480
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.572
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.490
_exptl_crystal_density_meas      1.490
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             784
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.382
_refine_diff_density_min         -0.443
_refine_diff_density_rms         0.063
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.008(19)
_refine_ls_extinction_coef       0.0102(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         3330
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0378
_refine_ls_R_factor_gt           0.0347
_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^)+(0.0493P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0863
_refine_ls_wR_factor_ref         0.0894
_reflns_number_gt                3012
_reflns_number_total             3330
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             7108824
_cod_data_source_file            c2cc35488h.txt
_cod_data_source_block           5391
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_formula_sum        'C17 H19 Br O5 '
_cod_database_code               7112295