Vinyl Grignard-Mediated Stereoselective Carbocyclization of Lactone Acetals.
Hedberg, Christinne; Estrup, Morten; Eikeland, Espen Z.; Jensen, Henrik H.; The Journal of organic chemistry 83 (2018) 2154–2165; doi:10.1021/acs.joc.7b03079

data_4033468
_publ_section_title
;
 Vinyl Grignard-Mediated Stereoselective Carbocyclization of Lactone
 Acetals.
;
_journal_issue                   4
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              2154
_journal_page_last               2165
_journal_paper_doi               10.1021/acs.joc.7b03079
_journal_volume                  83
_journal_year                    2018
_chemical_absolute_configuration rm
_chemical_formula_moiety         'C42 H48 O8'
_chemical_formula_sum            'C42 H48 O8'
_chemical_formula_weight         680.80
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2016-06-17
_audit_creation_method
;
Olex2 1.2
(compiled 2016.02.16 svn.r3265 for OlexSys, GUI svn.r5155)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.3559(3)
_cell_length_b                   15.9683(3)
_cell_length_c                   20.4082(6)
_cell_measurement_reflns_used    6630
_cell_measurement_temperature    101(2)
_cell_measurement_theta_max      27.2250
_cell_measurement_theta_min      1.6100
_cell_volume                     3700.71(16)
_computing_cell_refinement       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_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      101(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 10.3590
_diffrn_detector_type            Atlas
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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    -72.00  65.00   1.00  100.00    --   18.69 -38.00  60.00  137
  2  \w   -108.00  29.00   1.00  100.00    --  -19.62 -34.00 101.05  137
  3  \w     37.00  70.00   1.00  100.00    --  -19.78 178.00 150.00   33
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Single source at offset, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      0.0308810000
_diffrn_orient_matrix_UB_12      -0.0353310000
_diffrn_orient_matrix_UB_13      0.0121625000
_diffrn_orient_matrix_UB_21      0.0087138000
_diffrn_orient_matrix_UB_22      -0.0144075000
_diffrn_orient_matrix_UB_23      -0.0325500000
_diffrn_orient_matrix_UB_31      0.0535296000
_diffrn_orient_matrix_UB_32      0.0227272000
_diffrn_orient_matrix_UB_33      -0.0017104000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0375
_diffrn_reflns_av_unetI/netI     0.0488
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            21412
_diffrn_reflns_point_group_measured_fraction_full 0.986
_diffrn_reflns_point_group_measured_fraction_max 0.981
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.370
_diffrn_reflns_theta_min         1.619
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.82670
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.41 (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.222
_exptl_crystal_description       block
_exptl_crystal_F_000             1456
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.181
_refine_diff_density_min         -0.209
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details
;
 Flack x determined using 2078 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.9(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.114
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     455
_refine_ls_number_reflns         7431
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.114
_refine_ls_R_factor_all          0.0705
_refine_ls_R_factor_gt           0.0476
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0473P)^2^+0.6198P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1059
_refine_ls_wR_factor_ref         0.1170
_reflns_Friedel_coverage         0.758
_reflns_Friedel_fraction_full    0.969
_reflns_Friedel_fraction_max     0.956
_reflns_number_gt                5858
_reflns_number_total             7431
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo7b03079_si_004.cif
_cod_data_source_block           2016_06_16_c
_cod_depositor_comments
'Adding full bibliography for 4033466--4033471.cif.'
_cod_database_code               4033468
_chemical_oxdiff_formula         C42H48O8
_reflns_odcompleteness_completeness 99.95
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     26.32
_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, All O(H) groups
2.a Ternary CH refined with riding coordinates:
 C00E(H00E), C00F(H00F), C00H(H00H), C00K(H00K), C00U(H00U)
2.b Secondary CH2 refined with riding coordinates:
 C00A(H00A,H00B), C00V(H00D,H00G), C00Y(H00I,H00J), C00Z(H00L,H00M), C014(H01D,
 H01E), C017(H01F,H01G)
2.c Aromatic/amide H refined with riding coordinates:
 C00C(H00C), C00N(H00N), C00O(H00O), C00P(H00P), C00Q(H00Q), C00R(H00R),
 C00S(H00S), C00W(H00W), C00X(H00X), C010(H010), C011(H011), C012(H012),
 C015(H015), C016(H016), C018(H018), C01A(H01K), C01B(H01L)
2.d X=CH2 refined with riding coordinates:
 C01C(H01M,H01N), C01D(H01O,H01P)
2.e Idealised Me refined as rotating group:
 C013(H01A,H01B,H01C), C019(H01H,H01I,H01J), C01E(H01Q,H01R,H01S)
2.f Idealised tetrahedral OH refined as rotating group:
 O002(H002)
;
_shelx_shelxl_version_number     2014/7
_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 1.244
_oxdiff_exptl_absorpt_empirical_full_min 0.859