Asymmetric anti-aldol addition of achiral ketones via chiral N-amino cyclic carbamate hydrazones
John D. Knight; Don M. Coltart; Chem.Commun. 49 (2013) 7495–; doi:10.1039/c3cc44716b

data_7109641
_publ_section_title
;
 Asymmetric anti-aldol addition of achiral ketones via chiral N-amino
 cyclic carbamate hydrazones
;
_journal_name_full               Chem.Commun.
_journal_page_first              7495
_journal_paper_doi               10.1039/c3cc44716b
_journal_volume                  49
_journal_year                    2013
_chemical_formula_moiety         'C22 H30 N2 O3'
_chemical_formula_sum            'C22 H30 N2 O3'
_chemical_formula_weight         370.48
_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-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.9150(4)
_cell_length_b                   12.5529(8)
_cell_length_c                   24.5201(14)
_cell_measurement_reflns_used    1547
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      22.26
_cell_measurement_theta_min      2.39
_cell_volume                     2128.4(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker Kappa Apex II'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0380
_diffrn_reflns_av_sigmaI/netI    0.0145
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            35155
_diffrn_reflns_theta_full        25.89
_diffrn_reflns_theta_max         25.89
_diffrn_reflns_theta_min         2.32
_exptl_absorpt_coefficient_mu    0.077
_exptl_absorpt_correction_T_max  0.9878
_exptl_absorpt_correction_T_min  0.9655
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.156
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             800
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.41
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.224
_refine_diff_density_min         -0.196
_refine_diff_density_rms         0.030
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     242
_refine_ls_number_reflns         2371
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0518
_refine_ls_R_factor_gt           0.0391
_refine_ls_shift/su_max          0.067
_refine_ls_shift/su_mean         0.006
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0541P)^2^+0.3965P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0990
_refine_ls_wR_factor_ref         0.1087
_reflns_number_gt                1953
_reflns_number_total             2371
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc44716b.txt
_cod_data_source_block           s1
_cod_database_code               7109641