A green synthetic approach to synthesizing diverse 2-pyridones for their exceptional UV shielding functions
Bautista Maezono, Shizuka Mei; Poudel, Tej Narayan; Xia, Likai; Lee, Yong Rok; RSC Adv. 6 (2016) 82321–; doi:10.1039/C6RA18661K

data_7226398
_publ_section_title
;
 A green synthetic approach to synthesizing diverse 2-pyridones for their
 exceptional UV shielding functions
;
_journal_issue                   85
_journal_name_full               'RSC Adv.'
_journal_page_first              82321
_journal_paper_doi               10.1039/C6RA18661K
_journal_volume                  6
_journal_year                    2016
_chemical_formula_moiety         'C16 H15 N O5'
_chemical_formula_sum            'C16 H15 N O5'
_chemical_formula_weight         301.29
_chemical_melting_point          440
_chemical_name_systematic
'Methyl 5-(2-methoxybenzoyl)-1-methyl-2-oxo-1,2-dihydropyridine-3-carboxylate'
_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           SHELXTL
_audit_update_record
;
2016-07-22 deposited with the CCDC.
2016-08-24 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.3195(4)
_cell_length_b                   13.6469(6)
_cell_length_c                   12.8427(5)
_cell_measurement_reflns_used    9931
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      25.53
_cell_measurement_theta_min      2.45
_cell_volume                     1458.10(11)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'PHOTON 100 CMOS'
_diffrn_measurement_method       '\f and \w 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  0.1156
_diffrn_reflns_av_sigmaI/netI    0.0317
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            46442
_diffrn_reflns_theta_full        25.89
_diffrn_reflns_theta_max         25.89
_diffrn_reflns_theta_min         2.18
_exptl_absorpt_coefficient_mu    0.103
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.372
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             632
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: EtOAc/Hexane'
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.701
_refine_diff_density_min         -0.471
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     202
_refine_ls_number_reflns         2807
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.276
_refine_ls_R_factor_all          0.0769
_refine_ls_R_factor_gt           0.0616
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0590P)^2^+1.4524P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1555
_refine_ls_wR_factor_ref         0.1659
_reflns_number_gt                2211
_reflns_number_total             2807
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6ra18661k2.cif
_cod_data_source_block           332
_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.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7226398