Asymmetric Synthesis of Substituted anti-β-Fluorophenylalanines.
Davies, Stephen G.; Fletcher, Ai M.; Frost, Aileen B.; Roberts, Paul M.; Thomson, James E.; Organic letters 17 (2015) 2254–2257; doi:10.1021/acs.orglett.5b00880

data_1555008
_publ_section_title
;
 Asymmetric Synthesis of Substituted anti-\b-Fluorophenylalanines.
;
_journal_issue                   9
_journal_name_full               'Organic letters'
_journal_page_first              2254
_journal_page_last               2257
_journal_paper_doi               10.1021/acs.orglett.5b00880
_journal_volume                  17
_journal_year                    2015
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C28 H31 F2 N1 O2'
_chemical_formula_sum            'C28 H31 F2 N O2'
_chemical_formula_weight         451.56
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_cell_angle_alpha                90
_cell_angle_beta                 95.6737(13)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   7.90952(11)
_cell_length_b                   16.3522(3)
_cell_length_c                   9.53794(13)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    150
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     1227.58(3)
_computing_cell_refinement       'CrysAlis, (Oxford Diffraction, 2002)'
_computing_data_collection       'SuperNova, (Oxford Diffraction, 2010)'
_computing_data_reduction        'CrysAlis, (Oxford Diffraction, 2002)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Oxford Diffraction SuperNova'
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.019
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            12720
_diffrn_reflns_theta_full        74.483
_diffrn_reflns_theta_max         76.003
_diffrn_reflns_theta_min         4.659
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.703
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.222
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             480
_exptl_crystal_size_max          0.290
_exptl_crystal_size_mid          0.260
_exptl_crystal_size_min          0.150
_refine_diff_density_max         0.11
_refine_diff_density_min         -0.13
_refine_ls_abs_structure_details 'Flack (1983), 2125 Friedel-pairs'
_refine_ls_abs_structure_Flack   -0.01(10)
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.0110
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     299
_refine_ls_number_reflns         3951
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.0282
_refine_ls_R_factor_gt           0.0280
_refine_ls_shift/su_max          0.0070161
_refine_ls_shift/su_mean         0.0009125
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.05P)^2^ + 0.13P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0721
_refine_ls_wR_factor_gt          0.0718
_refine_ls_wR_factor_ref         0.0721
_reflns_limit_h_max              9
_reflns_limit_h_min              -9
_reflns_limit_k_max              18
_reflns_limit_k_min              -20
_reflns_limit_l_max              11
_reflns_limit_l_min              0
_reflns_number_gt                3910
_reflns_number_total             4754
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   2.72
_oxford_diffrn_Wilson_scale      0.01
_oxford_refine_ls_r_factor_ref   0.0282
_oxford_refine_ls_scale          11.8(4)
_oxford_reflns_number_all        3951
_oxford_reflns_threshold_expression_ref I>-3.0\s(I)
_iucr_refine_instructions_details_constraints
;
BLOCK SCALE X'S, U'S 
CONT ENANTIO 
RIDE C   (   2,X'S) H   (  21,X'S) 
RIDE C   (   4,X'S) H   (  41,X'S) 
RIDE C   (   5,X'S) H   (  51,X'S) 
RIDE C   (   8,X'S) H   (  81,X'S) 
RIDE C   (   9,X'S) H   (  91,X'S) 
RIDE C   (  10,X'S) H   ( 101,X'S) 
RIDE C   (  12,X'S) H   ( 121,X'S) 
RIDE C   (  14,X'S) H   ( 141,X'S) 
RIDE C   (  15,X'S) H   ( 151,X'S) 
RIDE C   (  16,X'S) H   ( 161,X'S) 
RIDE C   (  17,X'S) H   ( 171,X'S) 
RIDE C   (  18,X'S) H   ( 181,X'S) 
RIDE C   (  19,X'S) H   ( 192,X'S) H   ( 191,X'S) H   ( 193,X'S) 
RIDE C   (  20,X'S) H   ( 201,X'S) H   ( 202,X'S) 
RIDE C   (  22,X'S) H   ( 221,X'S) 
RIDE C   (  23,X'S) H   ( 231,X'S) 
RIDE C   (  24,X'S) H   ( 241,X'S) 
RIDE C   (  25,X'S) H   ( 251,X'S) 
RIDE C   (  26,X'S) H   ( 261,X'S) 
RIDE C   (  30,X'S) H   ( 301,X'S) H   ( 302,X'S) H   ( 303,X'S) 
RIDE C   (  31,X'S) H   ( 311,X'S) H   ( 312,X'S) H   ( 313,X'S) 
RIDE C   (  32,X'S) H   ( 321,X'S) H   ( 322,X'S) H   ( 323,X'S) 
END                                                                             
;
_iucr_refine_instructions_details_restraints
;
NO 
REM   HREST   START (DO NOT REMOVE THIS LINE) 
REM   HREST   END (DO NOT REMOVE THIS LINE) 
END                                                                             
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_cod_data_source_file            ol5b00880_si_002.cif
_cod_data_source_block           27
_cod_original_formula_sum        'C28 H31 F2 N1 O2'
_cod_database_code               1555008