Intramolecular cascade rearrangements of enynamine derived ketenimines: Access to acyclic and cyclic amidines
Chauhan, Dinesh Pratapsinh; Varma, Sreejith Jayasree J.; Gudem, Mahesh; Panigrahi, Nihar; Singh, Khushboo; Hazra, Anirban; Talukdar, Pinaki; Org. Biomol. Chem.  (2017) –; doi:10.1039/C7OB00499K

data_7155621
_publ_section_title
;
 Intramolecular cascade rearrangements of enynamine derived ketenimines:
 Access to acyclic and cyclic amidines
;
_journal_name_full               'Org. Biomol. Chem.'
_journal_paper_doi               10.1039/C7OB00499K
_journal_year                    2017
_chemical_formula_sum            'C33 H29 N3 O2 S'
_chemical_formula_weight         531.65
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/6
_audit_update_record
;
2017-01-02 deposited with the CCDC.
2017-05-09 downloaded from the CCDC.
;
_cell_angle_alpha                101.925(6)
_cell_angle_beta                 98.258(6)
_cell_angle_gamma                93.270(5)
_cell_formula_units_Z            2
_cell_length_a                   8.7353(11)
_cell_length_b                   10.2521(13)
_cell_length_c                   15.765(2)
_cell_measurement_reflns_used    9961
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      77.26
_cell_measurement_theta_min      2.90
_cell_volume                     1361.6(3)
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.964
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0656
_diffrn_reflns_av_unetI/netI     0.0637
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.964
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            16897
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.964
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         77.283
_diffrn_reflns_theta_min         2.902
_exptl_absorpt_coefficient_mu    1.334
_exptl_crystal_density_diffrn    1.297
_exptl_crystal_description       block
_exptl_crystal_F_000             560
_refine_diff_density_max         1.444
_refine_diff_density_min         -1.201
_refine_diff_density_rms         0.122
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.782
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     353
_refine_ls_number_reflns         5550
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.782
_refine_ls_R_factor_all          0.1123
_refine_ls_R_factor_gt           0.0948
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2521
_refine_ls_wR_factor_ref         0.2636
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4453
_reflns_number_total             5550
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7ob00499k3.cif
_cod_data_source_block           22b
_cod_database_code               7155621
_shelxl_version_number           2014/6
_shelx_res_checksum              23371