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_7157691
_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 H13 F N2'
_chemical_formula_weight         300.32
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2020-05-07 deposited with the CCDC.	2020-08-31 downloaded from the CCDC.
;
_cell_angle_alpha                112.103(4)
_cell_angle_beta                 96.044(4)
_cell_angle_gamma                93.256(4)
_cell_formula_units_Z            2
_cell_length_a                   6.0455(5)
_cell_length_b                   11.0023(10)
_cell_length_c                   11.7294(10)
_cell_measurement_reflns_used    6556
_cell_measurement_temperature    100.0(2)
_cell_measurement_theta_max      27.17
_cell_measurement_theta_min      3.25
_cell_volume                     714.87(11)
_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)'
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_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100.0(2)
_diffrn_measured_fraction_theta_full 0.999
_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
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_diffrn_reflns_Laue_measured_fraction_full 0.999
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_diffrn_reflns_limit_h_max       7
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_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            29678
_diffrn_reflns_point_group_measured_fraction_full 0.999
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_diffrn_reflns_theta_max         27.096
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_exptl_absorpt_coefficient_mu    0.092
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_exptl_absorpt_correction_type   numerical
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_exptl_crystal_colour            colourless
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_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             312
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_exptl_crystal_size_mid          0.208
_exptl_crystal_size_min          0.166
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_refine_ls_extinction_method     none
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_refine_ls_matrix_type           full
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_refine_ls_number_reflns         3149
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0783
_refine_ls_R_factor_gt           0.0472
_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^)+(0.0583P)^2^+0.4044P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1189
_refine_ls_wR_factor_ref         0.1408
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2244
_reflns_number_total             3149
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0ob01507e2.cif
_cod_data_source_block           i17869
_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_database_code               7157691
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.978
_shelx_estimated_absorpt_t_max   0.985
_shelx_res_checksum              68231
_shelx_hkl_checksum              16613