Synthesis of chiral γ-lactones by one-pot sequential enantioselective organocatalytic michael addition of boronic acids and diastereoselective intramolecular passerini reaction.
Bos, Maxence; Riguet, Emmanuel; The Journal of organic chemistry 79 (2014) 10881–10889; doi:10.1021/jo501908z

data_4030124
_publ_section_title
;
 Synthesis of chiral \g-lactones by one-pot sequential enantioselective
 organocatalytic michael addition of boronic acids and diastereoselective
 intramolecular passerini reaction.
;
_journal_issue                   22
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              10881
_journal_page_last               10889
_journal_paper_doi               10.1021/jo501908z
_journal_volume                  79
_journal_year                    2014
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C22 H28 N2 O5'
_chemical_formula_sum            'C22 H28 N2 O5'
_chemical_formula_weight         400.46
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2014-07-24
_audit_creation_method
;
  Olex2 1.1
  (compiled Sep 28 2011 20:36:17, GUI svn.r3906)
;
_cell_angle_alpha                90.00
_cell_angle_beta                 101.85(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.3395(19)
_cell_length_b                   9.881(2)
_cell_length_c                   11.877(2)
_cell_measurement_temperature    200
_cell_volume                     1072.7(4)
_computing_cell_refinement       'Bruker Enraf Nonius kappa CCD'
_computing_data_collection       Collect
_computing_data_reduction        EvalCCD
_computing_molecular_graphics
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement
;
SHELXL, G.M. Sheldrick, Acta Cryst.
(2008). A64, 112-122
;
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200.0
_diffrn_detector                 'CCD area detector'
_diffrn_detector_type            KappaCCD
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker-AXS-enraf-nonius KappaCCD'
_diffrn_measurement_method       'Phi and omega scans'
_diffrn_radiation_collimation    'Montel optic'
_diffrn_radiation_detector       CCD
_diffrn_radiation_monochromator  'Multilayer mirrors'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0556
_diffrn_reflns_av_unetI/netI     0.0762
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            13791
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         2.54
_diffrn_source                   'Incoatec ISG250'
_diffrn_source_target            Mo
_diffrn_source_type              'Microfocus sealed tube'
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.499901
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2004/1 (Bruker,2004) was used for absorption correction.
R(int) was 0.2307 before and 0.0627 after correction.
The Ratio of minimum to maximum transmission is 0.4999.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.240
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             428
_exptl_crystal_size_max          0.54
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.231
_refine_diff_density_min         -0.320
_refine_diff_density_rms         0.060
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1.5(15)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     268
_refine_ls_number_reflns         6157
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.1065
_refine_ls_R_factor_gt           0.0754
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1231P)^2^+0.5471P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1916
_refine_ls_wR_factor_ref         0.2160
_reflns_number_gt                4584
_reflns_number_total             6157
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo501908z_si_003.cif
_cod_data_source_block           nanny
_cod_depositor_comments
'Adding full bibliography for 4030123--4030125.cif.'
_cod_database_code               4030124