Stereoselective synthesis of oxa- and aza-angular triquinanes using tandem radical cyclization to vinylogous carbonates and carbamates.
Gharpure, Santosh J.; Niranjana, P.; Porwal, Suheel K.; Organic letters 14 (2012) 5476–5479; doi:10.1021/ol302557a

data_1508724
_publ_section_title
;
 Stereoselective synthesis of oxa- and aza-angular triquinanes using
 tandem radical cyclization to vinylogous carbonates and carbamates.
;
_journal_issue                   21
_journal_name_full               'Organic letters'
_journal_page_first              5476
_journal_page_last               5479
_journal_paper_doi               10.1021/ol302557a
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C26 H31 N O5 S'
_chemical_formula_sum            'C26 H31 N O5 S'
_chemical_formula_weight         469.58
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_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_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 104.2950(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.4749(3)
_cell_length_b                   20.5466(5)
_cell_length_c                   12.8261(4)
_cell_measurement_temperature    298(2)
_cell_volume                     2419.63(12)
_computing_cell_refinement       APEXII,Bruker,2004
_computing_data_collection       APEXII,Bruker,2004
_computing_data_reduction        SAINT,Bruker,2004
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type  'Bruker APEXII CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0182
_diffrn_reflns_av_sigmaI/netI    0.0333
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            18295
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.53
_diffrn_reflns_theta_min         1.91
_exptl_absorpt_coefficient_mu    0.171
_exptl_absorpt_correction_T_max  0.9667
_exptl_absorpt_correction_T_min  0.9318
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker,2004)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.289
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1000
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.328
_refine_diff_density_min         -0.341
_refine_diff_density_rms         0.050
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.976
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     603
_refine_ls_number_reflns         10798
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.976
_refine_ls_R_factor_all          0.0560
_refine_ls_R_factor_gt           0.0433
_refine_ls_shift/su_max          0.016
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1233
_refine_ls_wR_factor_ref         0.1354
_reflns_number_gt                9011
_reflns_number_total             10798
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol302557a_si_006.cif
_cod_data_source_block           new
_cod_depositor_comments
;
The following automatic conversions were performed:

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

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' 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 
;
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               1508724