Electroreductive coupling of phthalimides with alpha,beta-unsaturated esters: unusual rearrangement of resulting silyl ketene acetals.
Kise, Naoki; Isemoto, Shinsaku; Sakurai, Toshihiko; Organic letters 11 (2009) 4902–4905; doi:10.1021/ol902016a

data_1504236
_publ_section_title
;
 Electroreductive coupling of phthalimides with alpha,beta-unsaturated
 esters: unusual rearrangement of resulting silyl ketene acetals.
;
_journal_issue                   21
_journal_name_full               'Organic letters'
_journal_page_first              4902
_journal_page_last               4905
_journal_paper_doi               10.1021/ol902016a
_journal_volume                  11
_journal_year                    2009
_chemical_formula_moiety         'C15 H17 N O4'
_chemical_formula_sum            'C15 H17 N O4'
_chemical_formula_weight         275.30
_chemical_melting_point          424.0(10)
_chemical_name_systematic
; 
ethyl 2-((1R,9bS)-9b-hydroxy-5-oxo-2,3,5,9b-
tetrahydro-1H-pyrrolo[2,1-a]isoindol-1-yl)acetate 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                   9.030(5)
_cell_length_b                   11.494(6)
_cell_length_c                   26.562(14)
_cell_measurement_temperature    298(2)
_cell_volume                     2757(3)
_computing_cell_refinement       PROCESS-AUTO
_computing_data_collection       PROCESS-AUTO
_computing_data_reduction        PROCESS-AUTO
_computing_publication_material  yadokari-XG
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0870
_diffrn_reflns_av_sigmaI/netI    0.0422
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            24838
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         3.55
_exptl_absorpt_coefficient_mu    0.097
_exptl_absorpt_correction_T_max  0.9904
_exptl_absorpt_correction_T_min  0.9578
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
    Higashi, T. (1995). Program for Absorption Correction.
    Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.327
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1168
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.45
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.310
_refine_diff_density_min         -0.190
_refine_diff_density_rms         0.037
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     183
_refine_ls_number_reflns         3139
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0991
_refine_ls_R_factor_gt           0.0546
_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^)+(0.0569P)^2^+0.7632P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1186
_refine_ls_wR_factor_ref         0.1359
_reflns_number_gt                1944
_reflns_number_total             3139
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol902016a_si_002.cif
_cod_data_source_block           nk080524
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '423-425' was changed to '424.0(10)'
- the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_database_code               1504236