Diastereoselective Borocyclopropanation of Allylic Ethers Using a Boromethylzinc Carbenoid.
Benoit, Guillaume; Charette, André B; Journal of the American Chemical Society 139 (2017) 1364–1367; doi:10.1021/jacs.6b09090

data_4125720
_publ_section_title
;
 Diastereoselective Borocyclopropanation of Allylic Ethers Using a
 Boromethylzinc Carbenoid.
;
_journal_issue                   4
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1364
_journal_page_last               1367
_journal_paper_doi               10.1021/jacs.6b09090
_journal_volume                  139
_journal_year                    2017
_chemical_formula_moiety         'C7 H13 B I2 O2'
_chemical_formula_sum            'C7 H13 B I2 O2'
_chemical_formula_weight         393.78
_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'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2014-11-21
_audit_creation_method
;
Olex2 1.2
(compiled 2014.09.19 svn.r3010 for OlexSys, GUI svn.r4874)
;
_cell_angle_alpha                90
_cell_angle_beta                 111.017(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.8628(7)
_cell_length_b                   19.7443(19)
_cell_length_c                   9.1054(8)
_cell_measurement_reflns_used    9864
_cell_measurement_temperature    100
_cell_measurement_theta_max      60.571
_cell_measurement_theta_min      4.527
_cell_volume                     1151.71(19)
_computing_cell_refinement
'SAINT (2013) V8.34A; Integration Software for Single Crystal Data. Bruker AXS Inc., Madison, WI 53719-1173.'
_computing_data_collection
;
APEX 2 (2013) Bruker AXS Inc., Madison, WI 53719-1173.
;
_computing_data_reduction
'SAINT (2013) V8.34A; Integration Software for Single Crystal Data. Bruker AXS Inc., Madison, WI 53719-1173.'
_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    'XT (Sheldrick, 2008)'
_diffrn_ambient_temperature      100
_diffrn_detector                 'CMOS Area detector'
_diffrn_detector_area_resol_mean 10.24
_diffrn_detector_type            'Bruker Photon 100 CMOS Detector'
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device       'k-geometry diffractometer'
_diffrn_measurement_device_type  'Bruker Venture Metaljet'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_collimation    'Focusing mirrors'
_diffrn_radiation_monochromator  'Helios MX Mirror Optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           GaK\a
_diffrn_radiation_wavelength     1.34139
_diffrn_reflns_av_R_equivalents  0.0600
_diffrn_reflns_av_unetI/netI     0.0320
_diffrn_reflns_Laue_measured_fraction_full 0.989
_diffrn_reflns_Laue_measured_fraction_max 0.989
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            20147
_diffrn_reflns_point_group_measured_fraction_full 0.989
_diffrn_reflns_point_group_measured_fraction_max 0.989
_diffrn_reflns_theta_full        53.594
_diffrn_reflns_theta_max         60.689
_diffrn_reflns_theta_min         4.928
_diffrn_source                   'Metal Jet'
_diffrn_source_target            Ga
_diffrn_source_type              'Gallium Liquid Metal Jet Source'
_exptl_absorpt_coefficient_mu    28.576
_exptl_absorpt_correction_T_max  0.7519
_exptl_absorpt_correction_T_min  0.2431
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/4 (Bruker,2014) was used for absorption correction.
wR2(int) was 0.1535 before and 0.1012 after correction.
The Ratio of minimum to maximum transmission is 0.3233.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    2.271
_exptl_crystal_description       block
_exptl_crystal_F_000             728
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.08
_refine_diff_density_max         2.835
_refine_diff_density_min         -1.583
_refine_diff_density_rms         0.236
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.488
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     113
_refine_ls_number_reflns         2603
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.488
_refine_ls_R_factor_all          0.0406
_refine_ls_R_factor_gt           0.0402
_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^)+(0.1000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1627
_refine_ls_wR_factor_ref         0.1635
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2569
_reflns_number_total             2603
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja6b09090_si_003.cif
_cod_data_source_block           sylv13
_cod_depositor_comments
;
The following automatic conversions were performed:

'_diffrn_radiation_probe' value 'X-ray' changed to 'x-ray' according
to
/home/data/users/saulius/crontab/automatic-downloads/current/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 4973 2017-02-22 13:04:09Z antanas 
;
_cod_database_code               4125720
_shelxl_version_number           2014/6
_shelx_estimated_absorpt_t_max   0.208
_shelx_estimated_absorpt_t_min   0.055
_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:
 C1(H1)
2.b Idealised Me refined as rotating group:
 C4(H4A,H4B,H4C), C5(H5A,H5B,H5C), C6(H6A,H6B,H6C), C7(H7A,H7B,H7C)
;
_shelx_res_checksum              43726
_shelx_hkl_checksum              2542
_olex2_submission_special_instructions 'No special instructions were received'