Organocatalytic Sequential One-Pot Double Cascade Asymmetric Synthesis of Wieland-Miescher Ketone Analogues from a Knoevenagel/Hydrogenation/Robinson Annulation Sequence: Scope and Applications of Organocatalytic Biomimetic Reductions
Dhevalapally B. Ramachary; Mamillapalli Kishor; Journal of Organic Chemistry 72 (2007) 5056–5068; doi:10.1021/jo070277i

data_4023968
_publ_section_title
;
 Organocatalytic Sequential One-Pot Double Cascade Asymmetric
 Synthesis of Wieland-Miescher Ketone Analogues from a
 Knoevenagel/Hydrogenation/Robinson Annulation Sequence:
 Scope and Applications of Organocatalytic Biomimetic Reductions
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5056
_journal_page_last               5068
_journal_paper_doi               10.1021/jo070277i
_journal_volume                  72
_journal_year                    2007
_chemical_formula_moiety         'C13 H14 O2'
_chemical_formula_sum            'C13 H14 O2'
_chemical_formula_weight         202.24
_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                 92.578(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.953(3)
_cell_length_b                   7.622(3)
_cell_length_c                   20.585(7)
_cell_measurement_reflns_used    1775
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      24.62
_cell_measurement_theta_min      2.85
_cell_volume                     1089.9(7)
_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      298(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_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  0.0274
_diffrn_reflns_av_sigmaI/netI    0.0357
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            5698
_diffrn_reflns_theta_full        26.09
_diffrn_reflns_theta_max         26.09
_diffrn_reflns_theta_min         1.98
_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_T_max  0.995
_exptl_absorpt_correction_T_min  0.959
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.233
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             432
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.704
_refine_diff_density_min         -0.291
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     140
_refine_ls_number_reflns         2158
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0986
_refine_ls_R_factor_gt           0.0680
_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^)+(0.0971P)^2^+0.3313P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1753
_refine_ls_wR_factor_ref         0.1966
_reflns_number_gt                1422
_reflns_number_total             2158
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo070277isi20070209_033659.cif
_cod_data_source_block           dbr7aa
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4023968