Dioxane promoted photochemical <i>O</i>-alkylation of 1,3-dicarbonyl compounds beyond carbene insertion into C-H and C-C bonds.
Zhou, Xinlong; Jiang, Jingjing; Zhang, Min; Wu, Qingqing; Zhu, Keyong; Shi, Dongjie; Hou, Sensen; Zhao, Jingjing; Li, Pan; Chemical communications (Cambridge, England) 60 (2024) 4330–4333; doi:10.1039/d4cc00778f

data_7132875
_publ_section_title
;
 Dioxane promoted photochemical <i>O</i>-alkylation of 1,3-dicarbonyl
 compounds beyond carbene insertion into C-H and C-C bonds.
;
_journal_issue                   32
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              4330
_journal_page_last               4333
_journal_paper_doi               10.1039/d4cc00778f
_journal_volume                  60
_journal_year                    2024
_chemical_formula_moiety         'C19 H16 O4'
_chemical_formula_sum            'C19 H16 O4'
_chemical_formula_weight         308.32
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2023-03-02
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2023-03-02 deposited with the CCDC.	2024-03-19 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 108.127(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.9362(6)
_cell_length_b                   17.7920(10)
_cell_length_c                   8.2146(4)
_cell_measurement_reflns_used    2563
_cell_measurement_temperature    296
_cell_measurement_theta_max      27.779
_cell_measurement_theta_min      2.849
_cell_volume                     1519.04(14)
_computing_cell_refinement       'SAINT V8.38A (?, 2016)'
_computing_data_reduction        'SAINT V8.38A (?, 2016)'
_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      296.3
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker D8 VENTURE PHOTON II'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  'Helios multilayer optic'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0713
_diffrn_reflns_av_unetI/netI     0.0515
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            14415
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.998
_diffrn_reflns_theta_min         1.959
_diffrn_source_type              Microfocus
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.2627
_exptl_absorpt_correction_T_min  0.2238
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1072 before and 0.0553 after correction. The Ratio of minimum to maximum transmission is 0.8519. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.348
_exptl_crystal_description       block
_exptl_crystal_F_000             648
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.177
_refine_diff_density_min         -0.262
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         2977
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0774
_refine_ls_R_factor_gt           0.0446
_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^)+(0.0377P)^2^+0.4264P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0898
_refine_ls_wR_factor_ref         0.1062
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2097
_reflns_number_total             2977
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4cc00778f2.cif
_cod_data_source_block           m10199_0m
_cod_depositor_comments
'Adding full bibliography for 7132875--7132877.cif.'
_cod_database_code               7132875
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.981
_shelx_estimated_absorpt_t_min   0.977
_diffrn_source_source            'Incoatc Ius 3.0 '
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C18(H18A,H18B)
2.b Aromatic/amide H refined with riding coordinates:
 C1(H1), C2(H2), C3(H3), C4(H4), C5(H5), C9(H9), C12(H12), C13(H13), C14(H14),
 C15(H15), C16(H16)
2.c Idealised Me refined as rotating group:
 C19(H19A,H19B,H19C)
;
_shelx_res_checksum              77067
_shelx_hkl_checksum              68370
_olex2_submission_special_instructions 'No special instructions were received'