Tunable Regioselective Synthesis of Pyrazolo[3,4-d]pyrimidine Derivatives via Aza-Wittig Cyclization and Dimroth-type rearrangement
Wang, Tao; Xiong, Jun; Wang, Wenjuan; Li, Rou; Tang, Xiaoli; Xiong, Fei; RSC Adv.  (2015) –; doi:10.1039/C4RA15777J

data_7219550
_publ_section_title
;
 Tunable Regioselective Synthesis of Pyrazolo[3,4-d]pyrimidine Derivatives
 via Aza-Wittig Cyclization and Dimroth-type rearrangement
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C4RA15777J
_journal_year                    2015
_chemical_formula_moiety         'C20 H18 F N5 O S'
_chemical_formula_sum            'C20 H18 F N5 O S'
_chemical_formula_weight         395.45
_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
_audit_update_record
;
2011-10-26 deposited with the CCDC.
2015-02-09 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 121.671(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   20.583(3)
_cell_length_b                   15.434(3)
_cell_length_c                   13.875(2)
_cell_measurement_reflns_used    3260
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      24.27
_cell_measurement_theta_min      2.33
_cell_volume                     3751.4(11)
_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 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0738
_diffrn_reflns_av_sigmaI/netI    0.0844
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            16452
_diffrn_reflns_theta_full        28.02
_diffrn_reflns_theta_max         28.02
_diffrn_reflns_theta_min         2.33
_exptl_absorpt_coefficient_mu    0.204
_exptl_absorpt_correction_T_max  0.9819
_exptl_absorpt_correction_T_min  0.9340
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker 2008)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.400
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1648
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.230
_refine_diff_density_min         -0.249
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.010
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         4519
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.010
_refine_ls_R_factor_all          0.1714
_refine_ls_R_factor_gt           0.0628
_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^)+(0.0582P)^2^+2.8894P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1264
_refine_ls_wR_factor_ref         0.1633
_reflns_number_gt                2007
_reflns_number_total             4519
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ra15777j2.cif
_cod_data_source_block           WJJ3
_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.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' 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 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_Hall     -C2yc
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7219550