Modular and stereoselective synthesis of tetrasubstituted helical alkenes via a palladium-catalyzed domino reaction.
Liu, Hongqiang; El-Salfiti, Mohamed; Chai, David I.; Auffret, Jérémy; Lautens, Mark; Organic letters 14 (2012) 3648–3651; doi:10.1021/ol301495q

data_1508294
_publ_section_title
;
 Modular and stereoselective synthesis of tetrasubstituted helical alkenes
 via a palladium-catalyzed domino reaction.
;
_journal_issue                   14
_journal_name_full               'Organic letters'
_journal_page_first              3648
_journal_page_last               3651
_journal_paper_doi               10.1021/ol301495q
_journal_volume                  14
_journal_year                    2012
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C32 H32 O'
_chemical_formula_sum            'C32 H32 O'
_chemical_formula_weight         432.58
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_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
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.2613(6)
_cell_length_b                   14.1399(10)
_cell_length_c                   16.2722(9)
_cell_measurement_reflns_used    9283
_cell_measurement_temperature    147(2)
_cell_measurement_theta_max      66.42
_cell_measurement_theta_min      4.14
_cell_volume                     2361.0(3)
_computing_cell_refinement       APEX2
_computing_data_collection       'APEX2 (Bruker, 2007)'
_computing_data_reduction        'SAINT (Bruker, 2007)'
_computing_molecular_graphics    'PLATON (Spek, 2009)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      147(2)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Bruker Kappa APEX-DUO CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'multi-layer optics'
_diffrn_radiation_source         'Bruker ImuS'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0385
_diffrn_reflns_av_sigmaI/netI    0.0362
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            15493
_diffrn_reflns_theta_full        66.57
_diffrn_reflns_theta_max         66.57
_diffrn_reflns_theta_min         4.14
_exptl_absorpt_coefficient_mu    0.542
_exptl_absorpt_correction_T_max  0.9231
_exptl_absorpt_correction_T_min  0.9087
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.217
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.246
_refine_diff_density_min         -0.188
_refine_diff_density_rms         0.036
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.1(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.095
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     305
_refine_ls_number_reflns         4075
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.095
_refine_ls_R_factor_all          0.0403
_refine_ls_R_factor_gt           0.0376
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0374P)^2^+0.6741P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0921
_refine_ls_wR_factor_ref         0.0940
_reflns_number_gt                3866
_reflns_number_total             4075
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ol301495q_si_001.cif
_cod_data_source_block           d12141
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 

 Adding full bibliography for 1508294--1508295.cif.
;
_cod_database_code               1508294