A novel intramolecular defluorinative cyclization approach to the synthesis of difluoromethylated quinazolic acid derivatives
Hao, Jian; Ohkura, Hironari; Amii, Hideki; Uneyama, Kenji; Chemical Communications  (2000) 1883–; doi:10.1039/b005611l

data_7111062
_publ_contact_author
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    ENTER NAME
 ENTER ADDRESS
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_publ_section_title
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 A novel intramolecular defluorinative cyclization approach to the
 synthesis of difluoromethylated quinazolic acid derivatives
;
_journal_issue                   19
_journal_name_full               'Chemical Communications'
_journal_page_first              1883
_journal_paper_doi               10.1039/b005611l
_journal_year                    2000
_chemical_formula_moiety         'C18 H14 Cl2 F2 N2 O2 '
_chemical_formula_sum            'C18 H14 Cl2 F2 N2 O2'
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_audit_creation_date             'Sun Jun 19 04:43:45 2000'
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_cell_angle_gamma                78.837(2)
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_cell_length_a                   8.7877(6)
_cell_length_b                   13.1474(7)
_cell_length_c                   8.7626(4)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    288.2
_cell_measurement_theta_max      0.0
_cell_measurement_theta_min      0.0
_cell_volume                     908.30(9)
_computing_cell_refinement       'MSC/AFC Diffractometer Control'
_computing_data_collection       'MSC/AFC Diffractometer Control'
_computing_data_reduction        teXsan
_computing_publication_material  teXsan
_computing_structure_refinement  teXsan
_diffrn_ambient_temperature      288.2
_diffrn_measurement_device       'Rigaku RAXISII'
_diffrn_orient_matrix_UB_11      0.00000
_diffrn_orient_matrix_UB_12      0.00000
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_diffrn_radiation_detector       'Imaging Plate'
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_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 1/[\s^2^(Fo) + 0.00002|Fo|^2^]'
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_reflns_number_observed          2522
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_reflns_observed_criterion       >3.0sigma(I)
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_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 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'w = 1/[\s^2^(Fo) +
0.00002|Fo|^2^]' was changed to 'calc'. New tag
'_refine_ls_weighting_details' was created. The value of the new tag
was set to 'w = 1/[\s^2^(Fo) + 0.00002|Fo|^2^]'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        908.3000
_cod_original_sg_symbol_H-M      'P -1         '
_cod_original_formula_sum        'C18 H14 Cl2 F2 N2 O2 '
_cod_database_code               7111062