Unexpected regioselectivity switch: organophosphine-triggered reactions of cyclopropene-1,1-dicarboxylates with aldehydes.
Ni, Shengjun; Chen, Jie; Ma, Shengming; Organic letters 15 (2013) 3290–3293; doi:10.1021/ol401324z

data_1556189
_publ_section_title
;
 Unexpected regioselectivity switch: organophosphine-triggered reactions
 of cyclopropene-1,1-dicarboxylates with aldehydes.
;
_journal_issue                   13
_journal_name_full               'Organic letters'
_journal_page_first              3290
_journal_page_last               3293
_journal_paper_doi               10.1021/ol401324z
_journal_volume                  15
_journal_year                    2013
_chemical_absolute_configuration ad
_chemical_formula_sum            'C24 H26 O4'
_chemical_formula_weight         378.45
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_cell_setting           monoclinic
_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                 90.262(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   6.2434(5)
_cell_length_b                   8.0127(7)
_cell_length_c                   21.1301(18)
_cell_measurement_reflns_used    1856
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      45.803
_cell_measurement_theta_min      5.084
_cell_volume                     1057.05(15)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  '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  0.0195
_diffrn_reflns_av_sigmaI/netI    0.0354
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            6377
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.93
_exptl_absorpt_coefficient_mu    0.080
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.36519
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.189
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             404
_exptl_crystal_size_max          0.318
_exptl_crystal_size_mid          0.237
_exptl_crystal_size_min          0.169
_refine_diff_density_max         0.186
_refine_diff_density_min         -0.144
_refine_diff_density_rms         0.029
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.7(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     256
_refine_ls_number_reflns         4106
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0593
_refine_ls_R_factor_gt           0.0472
_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^)+(0.0694P)^2^+0.0441P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1223
_refine_ls_wR_factor_ref         0.1310
_reflns_number_gt                3264
_reflns_number_total             4106
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol401324z_si_002.cif
_cod_data_source_block           cd211519
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               1556189