Asymmetric synthesis of beta2-amino acids: 2-substituted-3-aminopropanoic acids from N-acryloyl SuperQuat derivatives.
Beddow, James E.; Davies, Stephen G.; Ling, Kenneth B.; Roberts, Paul M.; Russell, Angela J.; Smith, Andrew D.; Thomson, James E.; Organic & biomolecular chemistry 5 (2007) 2812–2825; doi:10.1039/b707689d

data_7151144
_publ_section_title
;
 Asymmetric synthesis of beta2-amino acids:
 2-substituted-3-aminopropanoic acids from N-acryloyl SuperQuat
 derivatives.
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_journal_issue                   17
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2812
_journal_page_last               2825
_journal_paper_doi               10.1039/b707689d
_journal_volume                  5
_journal_year                    2007
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C26 H34 N2 O3'
_chemical_formula_sum            'C26 H34 N2 O3'
_chemical_formula_weight         422.57
_chemical_melting_point          ?
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      4
_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
_cell_angle_alpha                90
_cell_angle_beta                 108.4415(11)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   14.1180(3)
_cell_length_b                   6.1198(2)
_cell_length_c                   14.4072(4)
_cell_measurement_reflns_used    2362
_cell_measurement_temperature    190
_cell_measurement_theta_max      27
_cell_measurement_theta_min      5
_cell_volume                     1180.85(6)
_computing_cell_refinement
;
Denzo/Scalepack (Otwinowski & Minor, 1996)
;
_computing_data_collection
;
COLLECT (Nonius BV, 1997)
;
_computing_data_reduction
;
Denzo/Scalepack (Otwinowski & Minor, 1996)
;
_computing_molecular_graphics
;
CAMERON (Watkin et al 1996)
;
_computing_publication_material
;
CRYSTALS (Watkin et al 2001)
;
_computing_structure_refinement
;
CRYSTALS (Watkin et al 2001)
;
_computing_structure_solution
;
SIR92 (Altomare et al, 1994)
;
_diffrn_ambient_temperature      190
_diffrn_measured_fraction_theta_full 0.963
_diffrn_measured_fraction_theta_max 0.961
_diffrn_measurement_device_type
;
Enraf Nonius Kappa CCD
;
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.01
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            4697
_diffrn_reflns_theta_full        25.546
_diffrn_reflns_theta_max         27.469
_diffrn_reflns_theta_min         5.163
_diffrn_standards_decay_%        0.00
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.077
_exptl_absorpt_correction_T_max  0.98
_exptl_absorpt_correction_T_min  0.98
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Denzo/Scalepack (Otwinowski & Minor, 1996)
;
_exptl_crystal_colour            ' colourless '
_exptl_crystal_density_diffrn    1.188
_exptl_crystal_density_meas      ?
_exptl_crystal_description       ' block '
_exptl_crystal_F_000             456.000
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.23
_refine_diff_density_min         -0.14
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.1739
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     280
_refine_ls_number_reflns         2657
_refine_ls_R_factor_all          0.0360
_refine_ls_R_factor_gt           0.0335
_refine_ls_shift/su_max          0.000468
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details
;
Method = Prince modified Chebychev polynomial, (Watkin, 1994)
W = [weight] * [1-(deltaF/6*sigmaF)^2]^2

1.30 -0.462E-01 0.623
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0370
_refine_ls_wR_factor_gt          0.0354
_refine_ls_wR_factor_ref         0.0354
_reflns_limit_h_max              17
_reflns_limit_h_min              -18
_reflns_limit_k_max              7
_reflns_limit_k_min              0
_reflns_limit_l_max              18
_reflns_limit_l_min              0
_reflns_number_gt                2657
_reflns_number_total             2840
_reflns_threshold_expression     I>3.00u(I)
_cod_data_source_file            b707689d.txt
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
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_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7151144