Synthesis of Highly Functionalized Pyrrolidines via a Selective Iodide-Mediated Ring Expansion of Methylenecyclopropyl Amides
Mark E. Scott; Mark Lautens; Journal of Organic Chemistry 73 (2008) 8154–8162; doi:10.1021/jo802049u

data_4023834
_publ_section_title
;
 Synthesis of Highly Functionalized Pyrrolidines via a Selective
 Iodide-Mediated Ring Expansion of Methylenecyclopropyl Amides
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              8154
_journal_page_last               8162
_journal_paper_doi               10.1021/jo802049u
_journal_volume                  73
_journal_year                    2008
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C26 H26 N2 O2 S'
_chemical_formula_sum            'C26 H26 N2 O2 S'
_chemical_formula_weight         430.55
_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            8
_cell_length_a                   16.2161(10)
_cell_length_b                   16.3900(5)
_cell_length_c                   17.0351(10)
_cell_measurement_reflns_used    9252
_cell_measurement_temperature    150(1)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      2.6
_cell_volume                     4527.6(4)
_computing_cell_refinement       'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius B.V., 1997-2002)'
_computing_data_reduction        Denzo-SMN
_computing_molecular_graphics    'SHELXTL V6.1'
_computing_publication_material  'SHELXTL V6.1'
_computing_structure_refinement  'SHELXTL V6.1(Sheldrick, 2001)'
_computing_structure_solution    'SIR-92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150(1)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker-Nonius KappaCCD'
_diffrn_measurement_method       '\f scans and \w scans with \k offsets'
_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  0.150
_diffrn_reflns_av_sigmaI/netI    0.164
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            26778
_diffrn_reflns_theta_full        25.13
_diffrn_reflns_theta_max         25.13
_diffrn_reflns_theta_min         2.69
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.168
_exptl_absorpt_correction_T_max  0.9867
_exptl_absorpt_correction_T_min  0.9736
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Denzo-SMN (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.263
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1824
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.283
_refine_diff_density_min         -0.257
_refine_diff_density_rms         0.062
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.05(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.967
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     563
_refine_ls_number_reflns         8048
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.967
_refine_ls_R_factor_all          0.1673
_refine_ls_R_factor_gt           0.0642
_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^)+(0.0521P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1082
_refine_ls_wR_factor_ref         0.1397
_reflns_number_gt                4316
_reflns_number_total             8048
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo802049u_si_002.cif
_cod_data_source_block           k0784
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_database_code               4023834