Synthesis of seven-membered lactones by regioselective and stereoselective iodolactonization of electron-deficient olefins.
Tang, Pan-Ting; Shao, You-Xiang; Wang, Liang-Neng; Wei, Yi; Li, Ming; Zhang, Ni-Juan; Luo, Xiao-Peng; Ke, Zhuofeng; Liu, Yue-Jin; Zeng, Ming-Hua; Chemical communications (Cambridge, England) 56 (2020) 6680–6683; doi:10.1039/c9cc10080f

data_7126470
_publ_section_title
;
 Synthesis of seven-membered lactones by regioselective and
 stereoselective iodolactonization of electron-deficient olefins.
;
_journal_issue                   49
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              6680
_journal_page_last               6683
_journal_paper_doi               10.1039/c9cc10080f
_journal_volume                  56
_journal_year                    2020
_chemical_formula_moiety         'C19 H17 I O4'
_chemical_formula_sum            'C19 H17 I O4'
_chemical_formula_weight         436.22
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2019-06-14
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2019-07-31 deposited with the CCDC.	2020-04-30 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 107.437(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.5655(4)
_cell_length_b                   14.9260(5)
_cell_length_c                   11.4963(4)
_cell_measurement_reflns_used    7217
_cell_measurement_temperature    99.99(10)
_cell_measurement_theta_max      29.4440
_cell_measurement_theta_min      2.2890
_cell_volume                     1729.66(11)
_computing_cell_refinement       'CrysAlisPro 1.171.39.34b (Rigaku OD, 2017)'
_computing_data_collection       'CrysAlisPro 1.171.39.34b (Rigaku OD, 2017)'
_computing_data_reduction        'CrysAlisPro 1.171.39.34b (Rigaku OD, 2017)'
_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    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      99.99(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_type            HyPix
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.816
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w    -39.00  65.00   0.50    0.96    --   -9.20  78.00  -9.00  208
  2  \w    -40.00  14.00   0.50    0.96    --   -9.20 -57.00 150.00  108
  3  \w    -26.00  17.00   0.50    0.96    --   -9.20 -99.00  90.00   86
  4  \w    -12.00  17.00   0.50    0.96    --   -9.20 -99.00  30.00   58
  5  \w    -24.00  17.00   0.50    0.96    --   -9.20 -78.00-134.00   82
  6  \w    -26.00  13.00   0.50    0.96    --   -9.20 -99.00-180.00   78
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'XtaLAB Synergy, Dualflex, HyPix'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      -0.0581436000
_diffrn_orient_matrix_UB_12      0.0126480000
_diffrn_orient_matrix_UB_13      0.0146759000
_diffrn_orient_matrix_UB_21      -0.0333290000
_diffrn_orient_matrix_UB_22      -0.0382134000
_diffrn_orient_matrix_UB_23      -0.0312372000
_diffrn_orient_matrix_UB_31      0.0214378000
_diffrn_orient_matrix_UB_32      -0.0252714000
_diffrn_orient_matrix_UB_33      0.0546650000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0467
_diffrn_reflns_av_unetI/netI     0.0460
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.816
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            14543
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.816
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.305
_diffrn_reflns_theta_min         2.298
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'PhotonJet (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    1.871
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.30254
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.34b (Rigaku Oxford Diffraction, 2017)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.675
_exptl_crystal_description       block
_exptl_crystal_F_000             864
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.901
_refine_diff_density_min         -1.305
_refine_diff_density_rms         0.111
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     220
_refine_ls_number_reflns         4229
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0449
_refine_ls_R_factor_gt           0.0363
_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^)+(0.0394P)^2^+1.4639P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0854
_refine_ls_wR_factor_ref         0.0900
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3563
_reflns_number_total             4229
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9cc10080f2.cif
_cod_data_source_block           exp_2639
_cod_depositor_comments
'Adding full bibliography for 7126465--7126470.cif.'
_cod_database_code               7126470
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.706
_shelx_estimated_absorpt_t_min   0.706
_reflns_odcompleteness_completeness 99.59
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     26.32
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(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)
2.b Aromatic/amide H refined with riding coordinates:
 C6(H6), C7(H7), C8(H8), C13(H13), C14(H14), C17(H17)
2.c Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C10(H10A,H10B,H10C), C16(H16A,H16B,H16C)
;
_shelx_res_checksum              50289
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 1.945
_oxdiff_exptl_absorpt_empirical_full_min 0.469