An iodine-promoted Meyer–Schuster rearrangement for the synthesis of α-iodo unsaturated ketones
Zhu, Hai-Tao; Fan, Ming-Jin; Yang, De-Suo; Wang, Xiao-Ling; Ke, Sen; Zhang, Chao-Yang; Guan, Zheng-Hui; Organic Chemistry Frontiers 2 (2015) 506–; doi:10.1039/C5QO00048C

data_1553109
_publ_section_title
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 An iodine-promoted Meyer--Schuster rearrangement for the synthesis of
 \a-iodo unsaturated ketones
;
_journal_issue                   5
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              506
_journal_paper_doi               10.1039/C5QO00048C
_journal_volume                  2
_journal_year                    2015
_chemical_formula_sum            'C23 H17 I O3'
_chemical_formula_weight         468.27
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-01-18 deposited with the CCDC.
2015-03-13 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 111.863(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   26.291(14)
_cell_length_b                   8.781(5)
_cell_length_c                   18.363(10)
_cell_measurement_reflns_used    5517
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.13
_cell_measurement_theta_min      2.39
_cell_volume                     3934(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0316
_diffrn_reflns_av_sigmaI/netI    0.0296
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -31
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            13931
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.39
_exptl_absorpt_coefficient_mu    1.647
_exptl_absorpt_correction_T_max  0.8795
_exptl_absorpt_correction_T_min  0.7031
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.581
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1856
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.256
_refine_diff_density_min         -0.321
_refine_diff_density_rms         0.053
_refine_ls_extinction_coef       0.00444(10)
_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   1.055
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     246
_refine_ls_number_reflns         3666
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0365
_refine_ls_R_factor_gt           0.0247
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0152P)^2^+3.7400P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0479
_refine_ls_wR_factor_ref         0.0529
_reflns_number_gt                2987
_reflns_number_total             3666
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5qo00048c2.cif
_cod_data_source_block           c2c
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/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 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        3935(4)
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               1553109