Lewis base-promoted rearrangement of allylic cyanohydrins: construction of functionalized nitriles bearing 1,3-diketone moieties.
Zhang, Yan-Jing; Hou, Qi-Lan; Wang, Hai-Jing; Liao, Wei-Wei; The Journal of organic chemistry 79 (2014) 10890–10898; doi:10.1021/jo501909w

data_4030130
_publ_section_title
;
 Lewis base-promoted rearrangement of allylic cyanohydrins: construction
 of functionalized nitriles bearing 1,3-diketone moieties.
;
_journal_issue                   22
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              10890
_journal_page_last               10898
_journal_paper_doi               10.1021/jo501909w
_journal_volume                  79
_journal_year                    2014
_chemical_formula_moiety         'C20 H17 N O4'
_chemical_formula_sum            'C20 H17 N O4'
_chemical_formula_weight         335.35
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_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                 96.99(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.986(5)
_cell_length_b                   19.283(13)
_cell_length_c                   10.936(9)
_cell_measurement_reflns_used    7678
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      27.52
_cell_measurement_theta_min      3.18
_cell_volume                     1672(2)
_computing_cell_refinement       RAPID-AUTO
_computing_data_collection       'RAPID-AUTO (Rigaku Corporation, 1998)'
_computing_data_reduction
'CrystalStructure (Rigaku/MSC and Rigaku Corporation, 2002)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_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  0.0255
_diffrn_reflns_av_sigmaI/netI    0.0320
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            7960
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.17
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_T_max  0.9883
_exptl_absorpt_correction_T_min  0.9850
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.333
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.266
_refine_diff_density_min         -0.123
_refine_diff_density_rms         0.037
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.1(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     227
_refine_ls_number_reflns         3440
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0362
_refine_ls_R_factor_gt           0.0333
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0550P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0803
_refine_ls_wR_factor_ref         0.0816
_reflns_number_gt                3161
_reflns_number_total             3440
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo501909w_si_001.cif
_cod_data_source_block           2zyj78
_cod_depositor_comments          'Adding full bibliography for 4030130.cif.'
_cod_original_cell_volume        1671(2)
_cod_original_sg_symbol_H-M      Cc
_cod_database_code               4030130