TMSOTf-catalyzed synthesis of substituted quinazolines using hexamethyldisilazane as a nitrogen source under neat and microwave irradiation conditions.
Chan, Chieh-Kai; Lai, Chien-Yu; Wang, Cheng-Chung; Organic & biomolecular chemistry 18 (2020) 7201–7212; doi:10.1039/d0ob01507e

data_7157690
_publ_section_title
;
 TMSOTf-catalyzed synthesis of substituted quinazolines using
 hexamethyldisilazane as a nitrogen source under neat and microwave
 irradiation conditions.
;
_journal_issue                   36
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              7201
_journal_page_last               7212
_journal_paper_doi               10.1039/d0ob01507e
_journal_volume                  18
_journal_year                    2020
_chemical_formula_moiety         'C20 H13 F N2'
_chemical_formula_sum            'C20 H12 F N2'
_chemical_formula_weight         299.32
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2020-04-10 deposited with the CCDC.	2020-08-31 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 97.8600(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.3439(4)
_cell_length_b                   6.8286(2)
_cell_length_c                   20.1913(7)
_cell_measurement_reflns_used    9975
_cell_measurement_temperature    100.0(2)
_cell_measurement_theta_max      27.07
_cell_measurement_theta_min      3.41
_cell_volume                     1412.80(8)
_computing_cell_refinement       'SAINT V8.40A (Bruker Nano, Inc., 2019)'
_computing_data_collection       'Bruker Instrument Service v2012.12.0.3'
_computing_data_reduction        'SAINT V8.40A (Bruker Nano, Inc., 2019)'
_computing_molecular_graphics    'shelXle (C.B. Huebschle, rev 958)'
_computing_publication_material  'WinGX publication routines (Farrugia, 2014)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100.0(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0448
_diffrn_reflns_av_unetI/netI     0.0178
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            44058
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.101
_diffrn_reflns_theta_min         3.152
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.9713
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'Bruker SADABS, 1996'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.407
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             620
_exptl_crystal_size_max          0.327
_exptl_crystal_size_mid          0.256
_exptl_crystal_size_min          0.168
_refine_diff_density_max         0.299
_refine_diff_density_min         -0.223
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     212
_refine_ls_number_reflns         3120
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0481
_refine_ls_R_factor_gt           0.0413
_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^)+(0.0524P)^2^+0.7391P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1090
_refine_ls_wR_factor_ref         0.1140
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2704
_reflns_number_total             3120
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0ob01507e2.cif
_cod_data_source_block           i17855
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_crystal_density_meas' value 'none' was changed to
'?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 

 Adding full bibliography for 7157689--7157694.cif.
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7157690
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.970
_shelx_estimated_absorpt_t_max   0.985
_shelx_res_checksum              50530
_shelx_hkl_checksum              83184