NHC-Ag(I)-Catalyzed Three-Component 1,3-Dipolar Cycloaddition To Provide Polysubstituted Dihydro-/Tetrahydrofurans.
Liu, Yi-Fei; Wang, Zhen; Shi, Jin-Wei; Chen, Bai-Ling; Zhao, Zhi-Gang; Chen, Zili; The Journal of organic chemistry 80 (2015) 12733–12739; doi:10.1021/acs.joc.5b02422

data_4031758
_publ_section_title
;
 NHC-Ag(I)-Catalyzed Three-Component 1,3-Dipolar Cycloaddition To Provide
 Polysubstituted Dihydro-/Tetrahydrofurans.
;
_journal_issue                   24
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              12733
_journal_page_last               12739
_journal_paper_doi               10.1021/acs.joc.5b02422
_journal_volume                  80
_journal_year                    2015
_chemical_formula_sum            'C29 H28 O8'
_chemical_formula_weight         504.51
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 111.54(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.2194(18)
_cell_length_b                   28.551(6)
_cell_length_c                   11.042(2)
_cell_measurement_reflns_used    4710
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      30.6497
_cell_measurement_theta_min      2.3751
_cell_volume                     2703.5(11)
_computing_cell_refinement       crystalclear
_computing_data_collection       crystalclear
_computing_data_reduction        crystalclear
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'rigaku saturn'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0559
_diffrn_reflns_av_sigmaI/netI    0.0475
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_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       31
_diffrn_reflns_limit_k_min       -33
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_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            21413
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.38
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  0.9892
_exptl_absorpt_correction_T_min  0.9821
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   crystalclear
_exptl_crystal_density_diffrn    1.240
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1064
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.12
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_refine_ls_extinction_coef       0.025(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.073
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     371
_refine_ls_number_reflns         4748
_refine_ls_number_restraints     146
_refine_ls_restrained_S_all      1.128
_refine_ls_R_factor_all          0.1060
_refine_ls_R_factor_gt           0.0656
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0960P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1593
_refine_ls_wR_factor_ref         0.1854
_reflns_number_gt                2975
_reflns_number_total             4748
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo5b02422_si_002.cif
_cod_data_source_block           shelxl
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_absorpt_correction_type' value 'MULTI-SCAN' changed to
'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_refine_ls_hydrogen_treatment' value 'CONSTR' changed to 'constr'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 

 Adding full bibliography for 4031758.cif.
;
_cod_original_cell_volume        2703.5(9)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4031758