Diastereoselective Synthesis of 4-Hydroxytetralones via a Cascade Stetter-Aldol Reaction Catalyzed by N-Heterocyclic Carbenes
Fang-Gang Sun; Xue-Liang Huang; Song Ye; Journal of Organic Chemistry 75 (2010) 273–276; doi:10.1021/jo902376t

data_4025145
_publ_section_title
;
 Diastereoselective Synthesis of 4-Hydroxytetralones via a Cascade
 Stetter-Aldol Reaction Catalyzed by N-Heterocyclic Carbenes
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              273
_journal_page_last               276
_journal_paper_doi               10.1021/jo902376t
_journal_volume                  75
_journal_year                    2010
_chemical_formula_moiety         'C19 H18 O4'
_chemical_formula_sum            'C19 H18 O4'
_chemical_formula_weight         310.33
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                82.35(3)
_cell_angle_beta                 71.77(3)
_cell_angle_gamma                66.66(3)
_cell_formula_units_Z            2
_cell_length_a                   8.0800(16)
_cell_length_b                   10.047(2)
_cell_length_c                   10.705(2)
_cell_measurement_reflns_used    657
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.17
_cell_volume                     757.8(3)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_molecular_graphics    'XP in Siemens SHELXTL (Sheldrick, 1994)'
_computing_publication_material  'SHELX97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Saturn724+ CCD'
_diffrn_measurement_method       '\w scans at fixed \c = 45\%'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0278
_diffrn_reflns_av_sigmaI/netI    0.0257
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            9092
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.87
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  0.9721
_exptl_absorpt_correction_T_min  0.9567
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'CrystalClear (Rigaku Inc., 2008)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.360
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             328
_exptl_crystal_size_max          0.47
_exptl_crystal_size_mid          0.37
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.323
_refine_diff_density_min         -0.172
_refine_diff_density_rms         0.044
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.116
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         3441
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.116
_refine_ls_R_factor_all          0.0476
_refine_ls_R_factor_gt           0.0457
_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^)+(0.0553P)^2^+0.2018P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1158
_refine_ls_wR_factor_ref         0.1173
_reflns_number_gt                3317
_reflns_number_total             3441
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo902376t_si_001.cif
_cod_data_source_block           sa356
_cod_database_code               4025145