Double heteroannulation of S,N-acetals: a facile access to quinolone derivatives.
Janni, Manojkumar; Arora, Sahil; Peruncheralathan, S.; Organic & biomolecular chemistry 14 (2016) 8781–8788; doi:10.1039/c6ob01568a

data_7155255
_publ_section_title
;
 Double heteroannulation of S,N-acetals: a facile access to quinolone
 derivatives.
;
_journal_issue                   37
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              8781
_journal_page_last               8788
_journal_paper_doi               10.1039/c6ob01568a
_journal_volume                  14
_journal_year                    2016
_chemical_formula_sum            'C21 H13 N O2'
_chemical_formula_weight         311.32
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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
;
2016-07-11 deposited with the CCDC.
2016-08-19 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 99.154(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.2728(2)
_cell_length_b                   25.3300(7)
_cell_length_c                   11.4784(4)
_cell_measurement_reflns_used    3346
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.1
_cell_measurement_theta_min      1.6
_cell_volume                     1513.53(9)
_computing_cell_refinement       'SMART, SAINT'
_computing_data_collection       SMART
_computing_data_reduction        SAINT
_computing_molecular_graphics    'Diamond (Brandenburg, 1999)'
_computing_publication_material  'SHELXTLCIF-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART APEX CCD diffractometer'
_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  0.0378
_diffrn_reflns_av_sigmaI/netI    0.0251
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            19781
_diffrn_reflns_theta_full        27.12
_diffrn_reflns_theta_max         27.12
_diffrn_reflns_theta_min         1.61
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_T_max  0.7455
_exptl_absorpt_correction_T_min  0.6902
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS Bruker, 2007)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.366
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             648
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.244
_refine_diff_density_min         -0.178
_refine_diff_density_rms         0.070
_refine_ls_extinction_coef       0.027(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.083
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     218
_refine_ls_number_reflns         3346
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.083
_refine_ls_R_factor_all          0.0683
_refine_ls_R_factor_gt           0.0434
_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^)+(0.0851P)^2^+0.0310P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1240
_refine_ls_wR_factor_ref         0.1494
_reflns_number_gt                2275
_reflns_number_total             3346
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6ob01568a2.cif
_cod_data_source_block           8a
_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 4268 2015-11-12 08:31:59Z antanas 

 Adding full bibliography for 7155254--7155255.cif.

 Adding full bibliography for 7155254--7155255.cif.
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7155255