Diastereoselective Ireland-Claisen rearrangements of substituted allyl β-amino esters: applications in the asymmetric synthesis of C(5)-substituted transpentacins.
Davies, Stephen G.; Fletcher, Ai M.; Lee, James A.; Roberts, Paul M.; Souleymanou, Myriam Y.; Thomson, James E.; Zammit, Charlotte M.; Organic & biomolecular chemistry 12 (2014) 2702–2728; doi:10.1039/c4ob00274a

data_7153735
_publ_section_title
;
 Diastereoselective Ireland-Claisen rearrangements of substituted allyl
 \b-amino esters: applications in the asymmetric synthesis of
 C(5)-substituted transpentacins.
;
_journal_issue                   17
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2702
_journal_page_last               2728
_journal_paper_doi               10.1039/c4ob00274a
_journal_volume                  12
_journal_year                    2014
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C9 H18 Cl1 N1 O2'
_chemical_formula_sum            'C9 H18 Cl N O2'
_chemical_formula_weight         207.70
_space_group_IT_number           4
_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                 101.8270(12)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   5.42100(10)
_cell_length_b                   8.9375(3)
_cell_length_c                   11.4409(3)
_cell_measurement_reflns_used    1236
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      5
_cell_volume                     542.55(3)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2001).'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_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 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.000
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            2115
_diffrn_reflns_theta_full        27.490
_diffrn_reflns_theta_max         27.490
_diffrn_reflns_theta_min         5.244
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.323
_exptl_absorpt_correction_T_max  0.93
_exptl_absorpt_correction_T_min  0.93
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.271
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             224
_exptl_crystal_size_max          0.240
_exptl_crystal_size_mid          0.230
_exptl_crystal_size_min          0.210
_refine_diff_density_max         0.18
_refine_diff_density_min         -0.14
_refine_ls_abs_structure_details 'Flack (1983), 814 Friedel-pairs'
_refine_ls_abs_structure_Flack   0.03(5)
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.0066
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     119
_refine_ls_number_reflns         2115
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.0254
_refine_ls_R_factor_gt           0.0242
_refine_ls_shift/su_max          0.0004402
_refine_ls_shift/su_mean         0.0000229
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.01P)^2^ + 0.14P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0563
_refine_ls_wR_factor_gt          0.0553
_refine_ls_wR_factor_ref         0.0563
_reflns_limit_h_max              6
_reflns_limit_h_min              -7
_reflns_limit_k_max              8
_reflns_limit_k_min              -11
_reflns_limit_l_max              14
_reflns_limit_l_min              0
_reflns_number_gt                2067
_reflns_number_total             2115
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   1.81
_oxford_diffrn_Wilson_scale      0.28
_oxford_refine_ls_r_factor_ref   0.0254
_oxford_refine_ls_scale          1.920(10)
_oxford_reflns_number_all        2115
_oxford_reflns_threshold_expression_ref I>-3.0\s(I)
_cod_data_source_file            c4ob00274a2.cif
_cod_data_source_block           96.HCl
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_atom_sites_solution_primary' value 'Direct' changed to
'direct' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_formula_sum        'C9 H18 Cl1 N1 O2'
_cod_database_code               7153735
_iucr_refine_instruction_details_constraints
;
BLOCK SCALE X'S, U'S 
CONT ENANTIO 
RIDE C   (   5,X'S) H   (  51,X'S) H   (  52,X'S) H   (  53,X'S) 
RIDE C   (   6,X'S) H   (  61,X'S) 
RIDE C   (   7,X'S) H   (  71,X'S) 
RIDE C   (   8,X'S) H   (  81,X'S) H   (  82,X'S) 
RIDE C   (   9,X'S) H   (  91,X'S) H   (  92,X'S) 
RIDE C   (  10,X'S) H   ( 101,X'S) 
RIDE N   (  11,X'S) H   ( 112,X'S) H   ( 111,X'S) H   ( 113,X'S) 
RIDE C   (  12,X'S) H   ( 121,X'S) H   ( 122,X'S) 
RIDE C   (  13,X'S) H   ( 131,X'S) H   ( 133,X'S) H   ( 132,X'S) 
END                                                                             
;
_iucr_refine_instruction_details_restraints
;
NO 
REM   HREST   START (DO NOT REMOVE THIS LINE) 
REM   HREST   END (DO NOT REMOVE THIS LINE) 
END                                                                             
;