One-Pot Synthesis of 7,9-Dialkylpurin-8-one Analogues: Broad Substrate Scope
Jian-Ping Li; Yu Huang; Ming-Sheng Xie; Gui-Rong Qu; Hong-Ying Niu; Hai-Xia Wang; Bo-Wen Qin; Hai-Ming Guo; Journal of Organic Chemistry 78 (2013) 12629–12636; doi:10.1021/jo402248d

data_4028876
_publ_section_title
;
 One-Pot Synthesis of 7,9-Dialkylpurin-8-one Analogues: Broad Substrate
 Scope
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              12629
_journal_page_last               12636
_journal_paper_doi               10.1021/jo402248d
_journal_volume                  78
_journal_year                    2013
_chemical_formula_sum            'C21 H18 N2 O'
_chemical_formula_weight         314.37
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 116.057(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.732(3)
_cell_length_b                   9.1276(14)
_cell_length_c                   10.1906(16)
_cell_measurement_reflns_used    1911
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      24.04
_cell_measurement_theta_min      2.51
_cell_volume                     1648.8(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0193
_diffrn_reflns_av_sigmaI/netI    0.0161
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            6090
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.51
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  0.9860
_exptl_absorpt_correction_T_min  0.9837
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.266
_exptl_crystal_description       block
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.093
_refine_diff_density_min         -0.150
_refine_diff_density_rms         0.028
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     110
_refine_ls_number_reflns         1532
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0483
_refine_ls_R_factor_gt           0.0354
_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^)+(0.0455P)^2^+0.3258P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0873
_refine_ls_wR_factor_ref         0.0962
_reflns_number_gt                1198
_reflns_number_total             1532
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo402248d_si_002.cif
_cod_data_source_block           a
_cod_original_cell_volume        1648.9(4)
_cod_database_code               4028876