Double-Tandem [4π+2π].[2π+2π].[4π+2π].[2π+2π] Synthetic Sequence with Photoprotolytic Oxametathesis and Photoepoxidation in the Chromone Series
Roman A. Valiulin; Teresa M. Arisco; Andrei G. Kutateladze; Journal of Organic Chemistry 76 (2011) 1319–1332; doi:10.1021/jo102221q

data_4026087
_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
;
 Double-Tandem [4\p+2\p].[2\p+2\p].[4\p+2\p].[2\p+2\p] Synthetic Sequence
 with Photoprotolytic Oxametathesis and Photoepoxidation in the Chromone
 Series
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              1319
_journal_page_last               1332
_journal_paper_doi               10.1021/jo102221q
_journal_volume                  76
_journal_year                    2011
_chemical_formula_moiety         'C28 H28 O6'
_chemical_formula_sum            'C28 H28 O6'
_chemical_formula_weight         460.50
_chemical_name_common            photoepoxide
_chemical_name_systematic
;
13-Ethylene glycol monoacetal of 1S(R),2S(R),3S(R),5S(R),6R(S),7S(R)-7-
(1,3-dioxolan-2-yl)-5-phenyl-4-oxaoctacyclo[6.5.4.1^2,6^.0^1,8^.0^3,5^
.0^9,13^.0^10,16^.0^12,15^]octadecane-14,17-dione 
;
_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                85.890(2)
_cell_angle_beta                 86.6450(10)
_cell_angle_gamma                70.5440(10)
_cell_formula_units_Z            2
_cell_length_a                   9.8233(3)
_cell_length_b                   9.8589(3)
_cell_length_c                   12.1276(3)
_cell_measurement_reflns_used    9863
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      23.85
_cell_measurement_theta_min      2.19
_cell_volume                     1103.85(6)
_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 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0334
_diffrn_reflns_av_sigmaI/netI    0.0155
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            53149
_diffrn_reflns_theta_full        24.11
_diffrn_reflns_theta_max         24.11
_diffrn_reflns_theta_min         1.68
_exptl_absorpt_coefficient_mu    0.097
_exptl_absorpt_correction_T_max  0.9904
_exptl_absorpt_correction_T_min  0.9598
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.385
_exptl_crystal_description       irregular
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.43
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.253
_refine_diff_density_min         -0.172
_refine_diff_density_rms         0.037
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.483
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         3523
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.483
_refine_ls_R_factor_all          0.0514
_refine_ls_R_factor_gt           0.0403
_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^)+(0.1703P)^2^+2.5504P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1157
_refine_ls_wR_factor_ref         0.1403
_reflns_number_gt                2872
_reflns_number_total             3523
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo102221q_si_018.cif
_cod_data_source_block           tma25460_0m
_cod_original_cell_volume        1103.86(5)
_cod_original_sg_symbol_H-M      'P -1 '
_cod_database_code               4026087