Acid-Mediated Electrocyclic Domino Transformations of 5,5-Disubstituted 1-Amino-1-azapenta-1,4-dien-3-ones into Dihydrospiroindenepyrazole and Dihydroindenodiazepine Derivatives
Nugzar Ghavtadze; Roland Fröhlich; Ernst-Ulrich Würthwein; Journal of Organic Chemistry 74 (2009) 4584–4591; doi:10.1021/jo900270e

data_4024576
_publ_section_title
;
Acid-Mediated Electrocyclic Domino Transformations of 5,5-Disubstituted
1-Amino-1-azapenta-1,4-dien-3-ones into Dihydrospiroindenepyrazole and
Dihydroindenodiazepine Derivatives
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              4584
_journal_page_last               4591
_journal_paper_doi               10.1021/jo900270e
_journal_volume                  74
_journal_year                    2009
_chemical_formula_sum            'C10 H19 N2 O5 P'
_chemical_formula_weight         278.24
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 96.56(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.691(1)
_cell_length_b                   10.311(1)
_cell_length_c                   17.038(1)
_cell_measurement_reflns_used    3090
_cell_measurement_temperature    198(2)
_cell_measurement_theta_max      38.38
_cell_measurement_theta_min      0.41
_cell_volume                     1342.3(2)
_computing_cell_refinement       'Collect (Nonius B.V., 1998)'
_computing_data_collection       'Collect (Nonius B.V., 1998)'
_computing_data_reduction        'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'SCHAKAL (Keller, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      198(2)
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode Nonius FR591'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0679
_diffrn_reflns_av_sigmaI/netI    0.0604
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            11459
_diffrn_reflns_theta_full        28.12
_diffrn_reflns_theta_max         28.12
_diffrn_reflns_theta_min         2.31
_exptl_absorpt_coefficient_mu    0.220
_exptl_absorpt_correction_T_max  0.9677
_exptl_absorpt_correction_T_min  0.9369
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SORTAV (Blessing, 1995 & 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.377
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             592
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.260
_refine_diff_density_min         -0.407
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     186
_refine_ls_number_reflns         3212
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0917
_refine_ls_R_factor_gt           0.0474
_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^)+(0.0532P)^2^+0.2773P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1057
_refine_ls_wR_factor_ref         0.1201
_reflns_number_gt                2086
_reflns_number_total             3212
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo900270e_si_001.cif
_cod_data_source_block           wue3774
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               4024576