Diastereoselective Synthesis of 2-Amino-4-phosphonobutanoic Acids by Electrophilic Substitution and Tin-Peterson Olefination of Bis-lactim Ethers Derived from cyclo-[L-AP4-D-Val]
María C. Fernández; Aniana Díaz; Juan J. Guillín; Olga Blanco; María Ruiz; Vicente Ojea; Journal of Organic Chemistry 71 (2006) 6958–6974; doi:10.1021/jo061072x

data_4021944
_publ_section_title
;
 Diastereoselective Synthesis of 2-Amino-4-phosphonobutanoic Acids
 by Electrophilic Substitution and Tin-Peterson Olefination of Bis-lactim
 Ethers Derived from cyclo-[L-AP4-D-Val]
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              6958
_journal_page_last               6974
_journal_paper_doi               10.1021/jo061072x
_journal_volume                  71
_journal_year                    2006
_chemical_formula_sum            'C4 H9 F N O3 P'
_chemical_formula_weight         169.09
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.7943(13)
_cell_length_b                   8.718(3)
_cell_length_c                   11.059(4)
_cell_measurement_temperature    298(2)
_cell_volume                     655.1(3)
_computing_cell_refinement       'Siemens SMART'
_computing_data_collection       'Siemens SMART'
_computing_data_reduction        'Siemens SAINT'
_computing_molecular_graphics    'Siemens SHELXTL'
_computing_publication_material  'Siemens SHELXTL'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measurement_device       'Siemens CCD'
_diffrn_measurement_method       '\w scans'
_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  0.0158
_diffrn_reflns_av_sigmaI/netI    0.0212
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            3608
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         2.98
_diffrn_standards_decay_%        -0.39
_exptl_absorpt_coefficient_mu    0.385
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.809772
_exptl_absorpt_correction_type   Sadabs
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.714
_exptl_crystal_description       Prism
_exptl_crystal_F_000             352
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.285
_refine_diff_density_min         -0.193
_refine_diff_density_rms         0.047
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.066
_refine_ls_goodness_of_fit_obs   1.080
_refine_ls_matrix_type           full
_refine_ls_number_parameters     94
_refine_ls_number_reflns         1612
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.066
_refine_ls_restrained_S_obs      1.080
_refine_ls_R_factor_all          0.0258
_refine_ls_R_factor_obs          0.0234
_refine_ls_shift/esd_max         0.000
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0424P)^2^+0.0339P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0638
_refine_ls_wR_factor_obs         0.0627
_reflns_number_observed          1521
_reflns_number_total             1612
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            jo061072xsi20060524_020949.cif
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0424P)^2^+0.0339P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0424P)^2^+0.0339P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_database_code               4021944