Highly Selective Ring Expansion of Bicyclo[3.1.0]hexenes.
Gratia, Synthia; Mosesohn, Kathryn; Diver, Steven T.; Organic letters 18 (2016) 5320–5323; doi:10.1021/acs.orglett.6b02641

data_1555843
_publ_section_title
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 Highly Selective Ring Expansion of Bicyclo[3.1.0]hexenes.
;
_journal_issue                   20
_journal_name_full               'Organic letters'
_journal_page_first              5320
_journal_page_last               5323
_journal_paper_doi               10.1021/acs.orglett.6b02641
_journal_volume                  18
_journal_year                    2016
_chemical_formula_moiety         'C25 H24 O4'
_chemical_formula_sum            'C25 H24 O4'
_chemical_formula_weight         388.44
_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     iterative
_audit_creation_date             2016-03-04
_audit_creation_method
;
Olex2 1.2
(compiled 2016.02.19 svn.r3266 for OlexSys, GUI svn.r5155)
;
_cell_angle_alpha                90
_cell_angle_beta                 95.864(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.8495(6)
_cell_length_b                   15.8052(11)
_cell_length_c                   14.3121(10)
_cell_measurement_reflns_used    6299
_cell_measurement_temperature    90
_cell_measurement_theta_max      29.151
_cell_measurement_theta_min      2.578
_cell_volume                     1991.3(2)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'olex2.solve (Bourhis et al., 2015)'
_diffrn_ambient_temperature      90
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker SMART APEX2 area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0588
_diffrn_reflns_av_unetI/netI     0.0491
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.989
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            28446
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.989
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         29.594
_diffrn_reflns_theta_min         1.925
_diffrn_source                   'microfocus rotating anode'
_diffrn_source_type              'Incoatec I\ms'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_T_max  0.7459
_exptl_absorpt_correction_T_min  0.5678
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/5 (Bruker,2014/5) was used for absorption correction.
wR2(int) was 0.1695 before and 0.0648 after correction.
The Ratio of minimum to maximum transmission is 0.7612.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.296
_exptl_crystal_description       block
_exptl_crystal_F_000             824
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.355
_refine_diff_density_min         -0.259
_refine_diff_density_rms         0.054
_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     264
_refine_ls_number_reflns         5529
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0583
_refine_ls_R_factor_gt           0.0449
_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^)+(0.0336P)^2^+0.9561P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1026
_refine_ls_wR_factor_ref         0.1106
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4411
_reflns_number_total             5529
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol6b02641_si_002.cif
_cod_data_source_block           jmc_031601_0m
_cod_database_code               1555843
_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 Ternary CH refined with riding coordinates:
 C10(H10), C11(H11), C17(H17)
2.b Secondary CH2 refined with riding coordinates:
 C16(H16A,H16B)
2.c Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C5(H5), C6(H6), C12(H12), C14(H14), C15(H15),
 C21(H21), C22(H22), C23(H23), C24(H24), C25(H25)
2.d Idealised Me refined as rotating group:
 C9(H9A,H9B,H9C), C18(H18A,H18B,H18C)
;
_shelx_res_checksum              66887
_shelx_hkl_checksum              61161
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'