Organocatalyzed trifunctionalization of alkynyl 1,2-diones for the concise synthesis of acyloxy allylidene malonates and γ-alkylidenebutenolides
Chen, Li; Niu, Shengtong; Lan, Shouang; Liu, Wenjun; Yang, Shuang; Fang, Xinqiang; Green Chemistry 24 (2022) 3623–3628; doi:10.1039/D2GC00061J

data_7244666
_publ_section_title
;
 Organocatalyzed trifunctionalization of alkynyl 1,2-diones for the
 concise synthesis of acyloxy allylidene malonates and
 \g-alkylidenebutenolides
;
_journal_issue                   9
_journal_name_full               'Green Chemistry'
_journal_page_first              3623
_journal_page_last               3628
_journal_paper_doi               10.1039/D2GC00061J
_journal_volume                  24
_journal_year                    2022
_chemical_formula_moiety         'C28 H24 O5'
_chemical_formula_sum            'C28 H24 O5'
_chemical_formula_weight         440.47
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   geom
_audit_creation_date             2021-12-08
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2021-12-29 deposited with the CCDC.	2022-03-11 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   16.277(3)
_cell_length_b                   14.959(3)
_cell_length_c                   19.366(4)
_cell_measurement_reflns_used    1966
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      60.6400
_cell_measurement_theta_min      6.1460
_cell_volume                     4715.4(16)
_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    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0564
_diffrn_reflns_av_unetI/netI     0.0222
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.990
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            66511
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.990
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.559
_diffrn_reflns_theta_min         2.103
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.241
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1856
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.346
_refine_diff_density_min         -0.240
_refine_diff_density_rms         0.035
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.004
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     300
_refine_ls_number_reflns         5394
_refine_ls_number_restraints     268
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.1053
_refine_ls_R_factor_gt           0.0931
_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^)+(0.0818P)^2^+2.4751P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1925
_refine_ls_wR_factor_ref         0.2006
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4307
_reflns_number_total             5394
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2gc00061j2.cif
_cod_data_source_block           a
_cod_depositor_comments
'Adding full bibliography for 7244664--7244667.cif.'
_cod_original_cell_volume        4715.6(16)
_cod_database_code               7244666
_shelx_shelxl_version_number     2018/3
_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. Rigid bond restraints
 C2, C3
 with sigma for 1-2 distances of 0.001 and sigma for 1-3 distances of 0.001
3. Uiso/Uaniso restraints and constraints
Uanis(C26) \\sim Ueq: with sigma of 0.01 and sigma for terminal atoms of 0.02
4. Rigid body (RIGU) restrains
 O4, H2, C3, H1, C1, O1, C2, O2, H3, O3, C4, H4, C19, H5, C9, C17, C7, C22,
 C21, C15, O5, C11, H16, H22, C5, C20, C10, C13, H15, C16, H20, C8, H14, H21,
 C23, C6, C14, H23, C24, H18, H7B, C12, H17, C18, H7A, C25, H27C, H28C, H26,
 H28B, C28, H28A, H27B, H24, C26, H27A, C27
 with sigma for 1-2 distances of 0.001 and sigma for 1-3 distances of 0.001
5.a Ternary CH refined with riding coordinates:
 C26(H26)
5.b Secondary CH2 refined with riding coordinates:
 C7(H7A,H7B)
5.c Aromatic/amide H refined with riding coordinates:
 C1(H1), C2(H2), C3(H3), C4(H4), C5(H5), C14(H14), C15(H15), C16(H16),
 C17(H17), C18(H18), C20(H20), C21(H21), C22(H22), C23(H23), C24(H24)
5.d Idealised Me refined as rotating group:
 C27(H27A,H27B,H27C), C28(H28A,H28B,H28C)
;
_shelx_res_checksum              63264
_olex2_submission_special_instructions 'No special instructions were received'