Hf(OTf)4-Catalyzed highly diastereoselective synthesis of 1,3-disubstituted tetralin derivatives via benzylic C(sp(3))-H bond functionalization.
Yoshida, Taira; Mori, Keiji; Chemical communications (Cambridge, England) 53 (2017) 4319–4322; doi:10.1039/c7cc01717k

data_7119876
_publ_section_title
;
 Hf(OTf)4-Catalyzed highly diastereoselective synthesis of
 1,3-disubstituted tetralin derivatives via benzylic C(sp(3))-H bond
 functionalization.
;
_journal_issue                   31
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              4319
_journal_page_last               4322
_journal_paper_doi               10.1039/c7cc01717k
_journal_volume                  53
_journal_year                    2017
_chemical_formula_sum            'C21 H18 O6'
_chemical_formula_weight         366.35
_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_method           SHELXL-97
_audit_update_record
;
2017-02-20 deposited with the CCDC.
2017-03-23 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 104.414(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.3174(13)
_cell_length_b                   19.294(2)
_cell_length_c                   9.0603(11)
_cell_measurement_reflns_used    2546
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      25.06
_cell_measurement_theta_min      2.30
_cell_volume                     1746.8(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics
'Yadokari-XG 2009 (Wakita, Nemoto et al., 2009)'
_computing_publication_material
'Yadokari-XG 2009 (Wakita, Nemoto et al., 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       'Bruker APEX-II CCD'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0244
_diffrn_reflns_av_sigmaI/netI    0.0326
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            8319
_diffrn_reflns_theta_full        25.08
_diffrn_reflns_theta_max         25.08
_diffrn_reflns_theta_min         2.04
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.103
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.393
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       platelet
_exptl_crystal_F_000             768
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.243
_refine_diff_density_min         -0.180
_refine_diff_density_rms         0.039
_refine_ls_extinction_coef       0.0023(8)
_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   1.065
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     247
_refine_ls_number_reflns         3109
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0554
_refine_ls_R_factor_gt           0.0372
_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^)+(0.0400P)^2^+0.5072P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0849
_refine_ls_wR_factor_ref         0.0938
_reflns_number_gt                2396
_reflns_number_total             3109
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7cc01717k2.cif
_cod_data_source_block           p21c
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/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 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 7119875--7119876.cif.
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7119876