A combination of heterogeneous catalysis and photocatalysis for the olefination of quinoxalin-2(1H)-ones with ketones in water: a green and efficient route to (Z)-enaminones
Xu, Jun; Huang, Lin; He, Lei; Ni, Zhigang; Shen, Jiabin; Li, Xiaoling; Chen, Kaixian; Li, Wanmei; Zhang, Pengfei; Green Chemistry 23 (2021) 2123–2129; doi:10.1039/D0GC04235H

data_7242323
_publ_section_title
;
 A combination of heterogeneous catalysis and photocatalysis for the
 olefination of quinoxalin-2(1H)-ones with ketones in water: a green and
 efficient route to (Z)-enaminones
;
_journal_issue                   5
_journal_name_full               'Green Chemistry'
_journal_page_first              2123
_journal_page_last               2129
_journal_paper_doi               10.1039/D0GC04235H
_journal_volume                  23
_journal_year                    2021
_chemical_formula_moiety         'C19 H18 N2 O2'
_chemical_formula_sum            'C19 H18 N2 O2'
_chemical_formula_weight         306.35
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2020-07-13
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2020-11-03 deposited with the CCDC.	2021-02-11 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 91.046(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.6894(13)
_cell_length_b                   10.6948(14)
_cell_length_c                   13.7194(17)
_cell_measurement_reflns_used    3436
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.22
_cell_measurement_theta_min      2.41
_cell_volume                     1568.2(3)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      296.15
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0175
_diffrn_reflns_av_unetI/netI     0.0209
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            7788
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.007
_diffrn_reflns_theta_max         25.007
_diffrn_reflns_theta_min         2.694
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6910
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details
;
SADABS-2014/5 (Bruker,2014/5) was used for absorption correction.
wR2(int) was 0.0496 before and 0.0345 after correction.
The Ratio of minimum to maximum transmission is 0.9268.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_density_diffrn    1.298
_exptl_crystal_description       block
_exptl_crystal_F_000             648
_exptl_crystal_size_max          0.11
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.235
_refine_diff_density_min         -0.186
_refine_diff_density_rms         0.036
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     210
_refine_ls_number_reflns         2767
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0533
_refine_ls_R_factor_gt           0.0397
_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^)+(0.0511P)^2^+0.5541P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1010
_refine_ls_wR_factor_ref         0.1121
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2185
_reflns_number_total             2767
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0gc04235h2.cif
_cod_data_source_block           ww
_cod_depositor_comments          'Adding full bibliography for 7242323.cif.'
_cod_database_code               7242323
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.992
_shelx_estimated_absorpt_t_min   0.991
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B)
2.b Aromatic/amide H refined with riding coordinates:
 N2(H2), C3(H3), C4(H4), C5(H5), C7(H7), C11(H11), C15(H15), C16(H16),
 C17(H17), C18(H18)
2.c Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C13(H13A,H13B,H13C)
;
_shelx_res_checksum              22963
_olex2_submission_special_instructions 'No special instructions were received'