Phosphine-catalyzed dearomative [3+2] cycloaddition of 4-nitroisoxazoles with allenoates or Morita-Baylis-Hillman carbonates.
He, Yongjun; He, Tian-Juan; Cheng, Xiufang; Wei, Yibo; Wang, Huamin; Lin, Ying-Wu; Chemical communications (Cambridge, England) 60 (2024) 6961–6964; doi:10.1039/d4cc02231a

data_7133178
_publ_section_title
;
 Phosphine-catalyzed dearomative [3+2] cycloaddition of 4-nitroisoxazoles
 with allenoates or Morita-Baylis-Hillman carbonates.
;
_journal_issue                   54
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              6961
_journal_page_last               6964
_journal_paper_doi               10.1039/d4cc02231a
_journal_volume                  60
_journal_year                    2024
_chemical_formula_moiety         'C23 H18 N2 O5'
_chemical_formula_sum            'C23 H18 N2 O5'
_chemical_formula_weight         402.39
_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             2024-03-01
_audit_creation_method
;
Olex2 1.5
(compiled 2022.04.07 svn.rca3783a0 for OlexSys, GUI svn.r6498)
;
_audit_update_record
;
2024-04-05 deposited with the CCDC.	2024-06-11 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 97.2480(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.6492(5)
_cell_length_b                   7.4491(3)
_cell_length_c                   22.0277(9)
_cell_measurement_reflns_used    9901
_cell_measurement_temperature    170.00
_cell_measurement_theta_max      60.524
_cell_measurement_theta_min      3.327
_cell_volume                     1896.20(14)
_computing_cell_refinement       'SAINT V8.40B (Bruker Nano, Inc., 2019)'
_computing_data_collection       'Bruker Instrument Service vV6.2.14'
_computing_data_reduction        'SAINT V8.40B (Bruker Nano, Inc., 2019)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2019/2 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      170.00
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_type           GaK\a
_diffrn_radiation_wavelength     1.34139
_diffrn_reflns_av_R_equivalents  0.0290
_diffrn_reflns_av_unetI/netI     0.0269
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            23078
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        53.594
_diffrn_reflns_theta_max         60.657
_diffrn_reflns_theta_min         3.327
_diffrn_source_current           3.57
_diffrn_source_power             0.24957869999999996
_diffrn_source_voltage           69.91
_exptl_absorpt_coefficient_mu    0.530
_exptl_absorpt_correction_T_max  0.7519
_exptl_absorpt_correction_T_min  0.6850
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0860 before and 0.0524 after correction.
The Ratio of minimum to maximum transmission is 0.9110.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.410
_exptl_crystal_description       block
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.629
_refine_diff_density_min         -0.254
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     272
_refine_ls_number_reflns         4341
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0448
_refine_ls_R_factor_gt           0.0421
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0603P)^2^+0.7887P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1150
_refine_ls_wR_factor_ref         0.1172
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3995
_reflns_number_total             4341
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4cc02231a2.cif
_cod_data_source_block           240229_hyj_1_124_0m
_cod_depositor_comments
'Adding full bibliography for 7133178--7133179.cif.'
_cod_database_code               7133178
_shelx_shelxl_version_number     2019/2
_shelx_estimated_absorpt_t_max   0.969
_shelx_estimated_absorpt_t_min   0.920
_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 Ternary CH refined with riding coordinates:
 C17(H17)
2.b Secondary CH2 refined with riding coordinates:
 C20(H20A,H20B), C22(H22A,H22B)
2.c Aromatic/amide H refined with riding coordinates:
 C1(H1), C2(H2), C3(H3), C4(H4), C10(H10), C11(H11), C12(H12), C13(H13),
 C14(H14), C19(H19)
2.d Idealised Me refined as rotating group:
 C23(H23A,H23B,H23C)
;
_shelx_res_checksum              77755
_shelx_hkl_checksum              2001
_olex2_submission_special_instructions 'No special instructions were received'