Palladium-catalyzed bisarylation of 3-alkylbenzofurans to 3-arylalkyl-2-arylbenzofurans on water: tandem C(sp3)-H and C(sp2)-H activation reactions of 3-alkylbenzofurans
Beom Shin Cho; Young Keun Chung; Chem.Commun. 51 (2015) 14543–; doi:10.1039/C5cc04052C

data_7117798
_publ_section_title
;
 Palladium-catalyzed bisarylation of 3-alkylbenzofurans to
 3-arylalkyl-2-arylbenzofurans on water: tandem C(sp3)-H and C(sp2)-H
 activation reactions of 3-alkylbenzofurans
;
_journal_name_full               Chem.Commun.
_journal_page_first              14543
_journal_paper_doi               10.1039/C5cc04052C
_journal_volume                  51
_journal_year                    2015
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C25 H18 O'
_chemical_formula_sum            'C25 H18 O'
_chemical_formula_weight         334.39
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2015-01-19
_audit_creation_method
;
Olex2 1.2
(compiled 2014.07.22 svn.r2960 for OlexSys, GUI svn.r4862)
;
_audit_update_record
;
2015-01-24 deposited with the CCDC.
2015-08-07 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 103.1477(14)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.2582(2)
_cell_length_b                   6.2091(2)
_cell_length_c                   17.8371(5)
_cell_measurement_reflns_used    9971
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      28.33
_cell_measurement_theta_min      2.35
_cell_volume                     890.64(4)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'XS (Sheldrick, 2008)'
_diffrn_ambient_temperature      223.15
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'PHOTON 100 CMOS'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0601
_diffrn_reflns_av_unetI/netI     0.0349
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            31392
_diffrn_reflns_theta_full        28.41
_diffrn_reflns_theta_max         28.41
_diffrn_reflns_theta_min         2.35
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.074
_exptl_absorpt_correction_T_max  0.9926
_exptl_absorpt_correction_T_min  0.9824
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.247
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             352
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.174
_refine_diff_density_min         -0.182
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.4(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.079
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     235
_refine_ls_number_reflns         4438
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.079
_refine_ls_R_factor_all          0.0658
_refine_ls_R_factor_gt           0.0405
_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^)+(0.0340P)^2^+0.1670P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0833
_refine_ls_wR_factor_ref         0.0958
_reflns_number_gt                3479
_reflns_number_total             4438
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5cc04052c2.cif
_cod_data_source_block           no1
_cod_database_code               7117798
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C11(H11A,H11B)
2.b Aromatic/amide H refined with riding coordinates:
 C2(H2), C9(H9), C12(H12), C14(H14), C15(H15), C16(H16), C17(H17), C18(H18),
 C19(H19), C20(H20), C21(H21), C22(H22), C23(H23), C24(H24), C25(H25), C26(H26)
;
_olex2_submission_special_instructions 'No special instructions were received'