NH(4)OAc Promoted Cyclocondensation of 3-(o-Allylphenyl)pentane-1,5-diones: Synthesis of Tetracyclic Benzofused 1-Azahomoisotwistanes.
Chang, Meng-Yang; Wu, Ming-Hao; Tai, Hang-Yi; Organic letters 14 (2012) 3936–3939; doi:10.1021/ol301693s

data_1508328
_publ_section_title
;
 NH(4)OAc Promoted Cyclocondensation of
 3-(o-Allylphenyl)pentane-1,5-diones: Synthesis of Tetracyclic Benzofused
 1-Azahomoisotwistanes.
;
_journal_issue                   15
_journal_name_full               'Organic letters'
_journal_page_first              3936
_journal_page_last               3939
_journal_paper_doi               10.1021/ol301693s
_journal_volume                  14
_journal_year                    2012
_chemical_formula_sum            'C28 H27 N O2'
_chemical_formula_weight         409.51
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                89.852(3)
_cell_angle_beta                 64.820(3)
_cell_angle_gamma                66.824(3)
_cell_formula_units_Z            2
_cell_length_a                   10.270(2)
_cell_length_b                   10.974(2)
_cell_length_c                   11.981(3)
_cell_measurement_reflns_used    1049
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.9674
_cell_measurement_theta_min      2.2985
_cell_volume                     1101.1(4)
_computing_cell_refinement       'SAINT V7.68A (Bruker AXS, 2009)'
_computing_data_collection       'APEX2 (Bruker AXS, 2010)'
_computing_data_reduction        'SAINT V7.68A (Bruker AXS, 2009)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_detector_area_resol_mean 8.3666
_diffrn_measured_fraction_theta_full 0.980
_diffrn_measured_fraction_theta_max 0.980
_diffrn_measurement_device_type  'Bruker SMART APEX CCD'
_diffrn_measurement_method       '\f and \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  0.1160
_diffrn_reflns_av_sigmaI/netI    0.1695
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            10446
_diffrn_reflns_theta_full        26.34
_diffrn_reflns_theta_max         26.34
_diffrn_reflns_theta_min         1.92
_exptl_absorpt_coefficient_mu    0.077
_exptl_absorpt_correction_T_max  0.9486
_exptl_absorpt_correction_T_min  0.7468
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2008/1 (Bruker AXS)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.235
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Lump
_exptl_crystal_F_000             436
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.211
_refine_diff_density_min         -0.179
_refine_diff_density_rms         0.036
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.967
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     283
_refine_ls_number_reflns         4403
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.967
_refine_ls_R_factor_all          0.2344
_refine_ls_R_factor_gt           0.1041
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0628P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1427
_refine_ls_wR_factor_ref         0.1765
_reflns_number_gt                1660
_reflns_number_total             4403
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol301693s_si_007.cif
_cod_data_source_block           120410m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        1101.2(4)
_cod_database_code               1508328