Carbene-organocatalyzed enantioselective [5+5] annulation of dienols and dienals towards tetrahydroisochromen-1-ones.
Xu, Ke; Zhao, Jiayi; Lin, Kejun; Zhu, Tingshun; Chemical communications (Cambridge, England) 61 (2025) 10602–10605; doi:10.1039/d5cc02347e

data_7134668
_publ_section_title
;
 Carbene-organocatalyzed enantioselective [5+5] annulation of dienols and
 dienals towards tetrahydroisochromen-1-ones.
;
_journal_issue                   57
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              10602
_journal_page_last               10605
_journal_paper_doi               10.1039/d5cc02347e
_journal_volume                  61
_journal_year                    2025
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C32 H29 N O7'
_chemical_formula_sum            'C32 H29 N O7'
_chemical_formula_weight         539.56
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2023-03-06 deposited with the CCDC.	2025-06-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.51673(10)
_cell_length_b                   11.34590(10)
_cell_length_c                   22.2044(2)
_cell_measurement_reflns_used    36738
_cell_measurement_temperature    100.0(5)
_cell_measurement_theta_max      51.6950
_cell_measurement_theta_min      3.3530
_cell_volume                     2649.47(4)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      100.0(5)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 10.5826
_diffrn_detector_type            AtlasS2
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at home/near, AtlasS2'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0247
_diffrn_reflns_av_unetI/netI     0.0139
_diffrn_reflns_Laue_measured_fraction_full 0.978
_diffrn_reflns_Laue_measured_fraction_max 0.984
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            48521
_diffrn_reflns_point_group_measured_fraction_full 0.983
_diffrn_reflns_point_group_measured_fraction_max 0.988
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.996
_diffrn_reflns_theta_min         2.796
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.096
_exptl_crystal_colour            COLORLESS
_exptl_crystal_density_diffrn    1.353
_exptl_crystal_description       BLOCK
_exptl_crystal_F_000             1136
_exptl_crystal_size_max          0.260
_exptl_crystal_size_mid          0.180
_exptl_crystal_size_min          0.120
_refine_diff_density_max         0.301
_refine_diff_density_min         -0.175
_refine_diff_density_rms         0.042
_refine_ls_abs_structure_details
;
 Flack x determined using 3272 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.06(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     364
_refine_ls_number_reflns         7623
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0303
_refine_ls_R_factor_gt           0.0297
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0573P)^2^+0.2228P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0791
_refine_ls_wR_factor_ref         0.0798
_reflns_Friedel_coverage         0.797
_reflns_Friedel_fraction_full    0.989
_reflns_Friedel_fraction_max     0.993
_reflns_number_gt                7477
_reflns_number_total             7623
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5cc02347e2.cif
_cod_data_source_block           a22032102a0267
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_chemical_absolute_configuration' value 'AD' was changed
to 'ad' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 8170 2020-07-09 18:12:32Z antanas 

 Adding full bibliography for 7134660--7134669.cif.
;
_cod_database_code               7134668
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.989
_shelx_estimated_absorpt_t_min   0.976
_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:
 C3(H3), C4(H4), C6(H6), C7(H7)
2.b Secondary CH2 refined with riding coordinates:
 C30(H30A,H30B)
2.c Aromatic/amide H refined with riding coordinates:
 C8(H8), C14(H14), C15(H15), C16(H16), C17(H17), C19(H19), C20(H20), C21(H21),
 C22(H22), C23(H23), C25(H25), C26(H26), C28(H28), C29(H29)
2.d Idealised Me refined as rotating group:
 C10(H10A,H10B,H10C), C31(H31A,H31B,H31C), C32(H32A,H32B,H32C)
;
_shelx_res_checksum              54532
_shelx_hkl_checksum              72170