A Sc(OTf)3-catalyzed cascade reaction of o-aminoacetophenone with methanamine: construction of dibenzo[b,h][1,6]naphthyridine derivatives.
Mao, Dan; Tang, Jun; Wang, Wenbo; Liu, Xin; Wu, Shengying; Yu, Jianjun; Wang, Limin; Organic & biomolecular chemistry 13 (2015) 2122–2128; doi:10.1039/c4ob02220c

data_7154239
_publ_section_title
;
 A Sc(OTf)3-catalyzed cascade reaction of o-aminoacetophenone with
 methanamine: construction of dibenzo[b,h][1,6]naphthyridine derivatives.
;
_journal_issue                   7
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2122
_journal_page_last               2128
_journal_paper_doi               10.1039/c4ob02220c
_journal_volume                  13
_journal_year                    2015
_chemical_formula_sum            'C23 H18 N2'
_chemical_formula_weight         322.39
_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
_audit_update_record
;
2010-10-15 deposited with the CCDC.
2014-12-03 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 101.1510(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.1644(9)
_cell_length_b                   10.1980(11)
_cell_length_c                   21.107(2)
_cell_measurement_reflns_used    3110
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      51.822
_cell_measurement_theta_min      4.452
_cell_volume                     1724.2(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0526
_diffrn_reflns_av_sigmaI/netI    0.0448
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            9136
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.97
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.2993
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.242
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             680
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.362
_exptl_crystal_size_min          0.331
_refine_diff_density_max         0.273
_refine_diff_density_min         -0.252
_refine_diff_density_rms         0.055
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.095
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     231
_refine_ls_number_reflns         3370
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.095
_refine_ls_R_factor_all          0.0700
_refine_ls_R_factor_gt           0.0557
_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^)+(0.0999P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1587
_refine_ls_wR_factor_ref         0.1697
_reflns_number_gt                2482
_reflns_number_total             3370
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ob02220c2.cif
_cod_data_source_block           cd201531
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2935 2014-11-11 08:27:57Z andrius 

 Adding full bibliography for 7154239.cif.
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7154239