Photoinduced Intramolecular Cyclopentanation vs Photoprotolytic Oxametathesis in Polycyclic Alkenes Outfitted with Conformationally Constrained Aroylmethyl Chromophores
Roman A. Valiulin; Teresa M. Arisco; Andrei G. Kutateladze; Journal of Organic Chemistry 78 (2013) 2012–2025; doi:10.1021/jo301909j

data_4027987
_publ_contact_author_address
;Department of Chemistry and Biochemistry
University of Denver
FW Olin Hall, 202
2190 E. Iliff Ave
Denver, CO 80208
;
_publ_contact_author_email       akutatel.edu
_publ_contact_author_fax         303-871-2254
_publ_contact_author_name        'Andrei Kutateladze'
_publ_contact_author_phone       303-871-2995
_publ_section_title
;
 Photoinduced Intramolecular Cyclopentanation vs Photoprotolytic
 Oxametathesis in Polycyclic Alkenes Outfitted with Conformationally
 Constrained Aroylmethyl Chromophores
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              2012
_journal_page_last               2025
_journal_paper_doi               10.1021/jo301909j
_journal_volume                  78
_journal_year                    2013
_chemical_formula_moiety         'C28 H28 O5'
_chemical_formula_sum            'C28 H28 O5'
_chemical_formula_weight         444.52
_chemical_name_common            none
_chemical_name_systematic
;
dimethyl (1RS, 4RS, 5RS, 6SR)-spiro
[(1''RS)-endo-5-(1''-benzoyl-2''-phenylethyl)
bicyclo[2.2.1]hept-2-ene-exo-5,endo-6-dicarboxylate-7,1'-cyclopropane]
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                99.041(5)
_cell_angle_beta                 93.136(5)
_cell_angle_gamma                114.132(3)
_cell_formula_units_Z            2
_cell_length_a                   8.5739(6)
_cell_length_b                   9.0535(7)
_cell_length_c                   16.3809(15)
_cell_measurement_reflns_used    9917
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      28.50
_cell_measurement_theta_min      2.51
_cell_volume                     1135.98(16)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker D8 APEX II Diffractometer'
_diffrn_measurement_method       '\f and \w 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  0.0254
_diffrn_reflns_av_sigmaI/netI    0.0111
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            45792
_diffrn_reflns_theta_full        27.10
_diffrn_reflns_theta_max         27.10
_diffrn_reflns_theta_min         2.51
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_T_max  0.9774
_exptl_absorpt_correction_T_min  0.9409
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.294
_exptl_crystal_description       prism
_exptl_crystal_F_000             468
_exptl_crystal_size_max          0.70
_exptl_crystal_size_mid          0.47
_exptl_crystal_size_min          0.26
_refine_diff_density_max         0.285
_refine_diff_density_min         -0.394
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.918
_refine_ls_matrix_type           full
_refine_ls_number_parameters     300
_refine_ls_number_reflns         5002
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.918
_refine_ls_R_factor_all          0.0586
_refine_ls_R_factor_gt           0.0511
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1150P)^2^+0.3862P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1592
_refine_ls_wR_factor_ref         0.1723
_reflns_number_gt                4266
_reflns_number_total             5002
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo301909j_si_001_08.cif
_cod_data_source_block           7g_rav28826
_cod_database_code               4027987