Rh-catalyzed [7 + 1] cycloaddition of buta-1,3-dienylcyclopropanes and CO for the synthesis of cyclooctadienones.
Yao, Zhong-Ke; Li, Jianjun; Yu, Zhi-Xiang; Organic letters 13 (2011) 134–137; doi:10.1021/ol102700m

data_1501890
_publ_section_title
;
 Rh-catalyzed [7 + 1] cycloaddition of buta-1,3-dienylcyclopropanes and CO
 for the synthesis of cyclooctadienones.
;
_journal_issue                   1
_journal_name_full               'Organic letters'
_journal_page_first              134
_journal_page_last               137
_journal_paper_doi               10.1021/ol102700m
_journal_volume                  13
_journal_year                    2011
_chemical_formula_moiety         'C21 H20 N4 O5'
_chemical_formula_sum            'C21 H20 N4 O5'
_chemical_formula_weight         408.41
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 96.548(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.864(4)
_cell_length_b                   8.768(3)
_cell_length_c                   18.696(6)
_cell_measurement_reflns_used    417
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.17
_cell_volume                     1932.1(11)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2007)'
_computing_molecular_graphics    'XP in Siemens SHELXTL (Sheldrick, 1994)'
_computing_publication_material  'SHELX97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Saturn724+ CCD'
_diffrn_measurement_method       '\w scans at fixed \c = 45\%'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0483
_diffrn_reflns_av_sigmaI/netI    0.0392
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            13819
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.90
_exptl_absorpt_coefficient_mu    0.102
_exptl_absorpt_correction_T_max  0.9748
_exptl_absorpt_correction_T_min  0.9506
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'CrystalClear (Rigaku Inc., 2007)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.404
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             856
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.190
_refine_diff_density_min         -0.190
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.187
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     272
_refine_ls_number_reflns         3390
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.187
_refine_ls_R_factor_all          0.0664
_refine_ls_R_factor_gt           0.0609
_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^)+(0.0389P)^2^+1.1709P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1297
_refine_ls_wR_factor_ref         0.1329
_reflns_number_gt                3181
_reflns_number_total             3390
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol102700m_si_001.cif
_cod_data_source_block           sa719
_cod_original_cell_volume        1932.1(10)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               1501890