Direct benzylic metalation of a phenethylamine derivative: potassium as the key to both generation and stabilization of a labile anion.
Unkelbach, Christian; Rosenbaum, Hannah S.; Strohmann, Carsten; Chemical communications (Cambridge, England) 48 (2012) 10612–10614; doi:10.1039/c2cc35888c

data_7112559
_publ_section_title
;
 Direct benzylic metalation of a phenethylamine derivative: potassium as
 the key to both generation and stabilization of a labile anion.
;
_journal_issue                   86
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              10612
_journal_page_last               10614
_journal_paper_doi               10.1039/c2cc35888c
_journal_volume                  48
_journal_year                    2012
_chemical_formula_moiety         'C16 H25 N O'
_chemical_formula_sum            'C16 H25 N O'
_chemical_formula_weight         247.37
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.3576(10)
_cell_length_b                   19.611(2)
_cell_length_c                   8.8256(9)
_cell_measurement_temperature    173(2)
_cell_volume                     1446.5(3)
_computing_cell_refinement       'CrysAlis Red (Oxford Diffraction, 2006)'
_computing_data_collection       'CrysAlis CCD (Oxford Diffraction, 2006)'
_computing_data_reduction        'CrysAlis Red (Oxford Diffraction, 2006)'
_computing_molecular_graphics    'Ortep-3 V1.073 (Farrugia, 2001)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-90 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_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  0.0389
_diffrn_reflns_av_sigmaI/netI    0.0723
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            5187
_diffrn_reflns_theta_full        26.99
_diffrn_reflns_theta_max         26.99
_diffrn_reflns_theta_min         2.53
_exptl_absorpt_coefficient_mu    0.070
_exptl_absorpt_correction_T_max  0.9862
_exptl_absorpt_correction_T_min  0.9727
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrysAlis Red (Oxford Diffraction 2006)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.136
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             544
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.166
_refine_diff_density_min         -0.216
_refine_diff_density_rms         0.036
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.010
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     169
_refine_ls_number_reflns         2204
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.010
_refine_ls_R_factor_all          0.0674
_refine_ls_R_factor_gt           0.0369
_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^)+(0.0120P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0531
_refine_ls_wR_factor_ref         0.0555
_reflns_number_gt                1463
_reflns_number_total             2204
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2cc35888c.txt
_cod_data_source_block           strohmann6e
_cod_database_code               7112559