Silver-initiated radical ring expansion/fluorination of ethynyl cyclobutanols: efficient synthesis of monofluoroethenyl cyclopentanones
Tian, Qingshan; Chen, Bin; Zhang, Guozhu; Green Chem. 18 (2016) 6236–; doi:10.1039/C6GC02656G

data_7226984
_publ_section_title
;
 Silver-initiated radical ring expansion/fluorination of ethynyl
 cyclobutanols: efficient synthesis of monofluoroethenyl cyclopentanones
;
_journal_issue                   23
_journal_name_full               'Green Chem.'
_journal_page_first              6236
_journal_paper_doi               10.1039/C6GC02656G
_journal_volume                  18
_journal_year                    2016
_chemical_formula_moiety         'C13 H13 F O2'
_chemical_formula_sum            'C13 H13 F O2'
_chemical_formula_weight         220.23
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_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     dual
_audit_creation_date             2016-10-11
_audit_creation_method
;
Olex2 1.2
(compiled 2016.02.19 svn.r3266 for OlexSys, GUI svn.r5227)
;
_audit_update_record
;
2016-10-12 deposited with the CCDC.
2016-11-02 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 114.3980(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.2255(14)
_cell_length_b                   6.0009(6)
_cell_length_c                   13.9246(13)
_cell_measurement_reflns_used    4178
_cell_measurement_temperature    130
_cell_measurement_theta_max      30.419
_cell_measurement_theta_min      2.67
_cell_volume                     1082.53(18)
_computing_cell_refinement       'SAINT v7.68A (Bruker, 2009)'
_computing_data_reduction        'SAINT v7.68A (Bruker, 2009)'
_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_temperature      130
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0210
_diffrn_reflns_av_unetI/netI     0.0218
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            10460
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         30.588
_diffrn_reflns_theta_min         2.936
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.101
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.6860
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
wR2(int) was 0.0439 before and 0.0322 after correction.
The Ratio of minimum to maximum transmission is 0.9194.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.351
_exptl_crystal_description       block
_exptl_crystal_F_000             464
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.561
_refine_diff_density_min         -0.589
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     146
_refine_ls_number_reflns         3317
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0660
_refine_ls_R_factor_gt           0.0552
_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^)+(0.0839P)^2^+0.5548P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1464
_refine_ls_wR_factor_ref         0.1576
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2727
_reflns_number_total             3317
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6gc02656g2.cif
_cod_data_source_block           dm16644
_cod_depositor_comments          'Adding full bibliography for 7226984.cif.'
_cod_database_code               7226984
_shelx_estimated_absorpt_t_max   0.985
_shelx_estimated_absorpt_t_min   0.978
_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 Secondary CH2 refined with riding coordinates:
 C2(H2A,H2B), C3(H3B,H3A), C4(H4A,H4B)
2.b Aromatic/amide H refined with riding coordinates:
 C8(H8), C9(H9), C11(H11), C12(H12)
2.c Idealised Me refined as rotating group:
 C13(H13A,H13B,H13C)
;
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'