Multicomponent cascade cycloaddition involving tropone, allenoate, and isocyanide: a rapid access to a 7,6,5-fused tricyclic skeleton.
Jia, Shuanglong; Su, Shikuan; Li, Chunju; Jia, Xueshun; Li, Jian; Organic letters 16 (2014) 5604–5607; doi:10.1021/ol502656g

data_1518014
_publ_section_title
;
 Multicomponent cascade cycloaddition involving tropone, allenoate, and
 isocyanide: a rapid access to a 7,6,5-fused tricyclic skeleton.
;
_journal_issue                   21
_journal_name_full               'Organic letters'
_journal_page_first              5604
_journal_page_last               5607
_journal_paper_doi               10.1021/ol502656g
_journal_volume                  16
_journal_year                    2014
_chemical_formula_sum            'C25 H28 N2 O5'
_chemical_formula_weight         436.49
_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                69.407(2)
_cell_angle_beta                 78.799(2)
_cell_angle_gamma                74.676(2)
_cell_formula_units_Z            4
_cell_length_a                   9.9083(17)
_cell_length_b                   14.668(3)
_cell_length_c                   17.891(3)
_cell_measurement_reflns_used    2127
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      21.04
_cell_measurement_theta_min      2.35
_cell_volume                     2332.7(7)
_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_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_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  0.0212
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_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            12233
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         2.14
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_T_max  0.9957
_exptl_absorpt_correction_T_min  0.9820
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            lightyellow
_exptl_crystal_density_diffrn    1.243
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.172
_refine_diff_density_min         -0.162
_refine_diff_density_rms         0.035
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     585
_refine_ls_number_reflns         8125
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0942
_refine_ls_R_factor_gt           0.0539
_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^)+(0.0577P)^2^+0.1995P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1202
_refine_ls_wR_factor_ref         0.1419
_reflns_number_gt                4918
_reflns_number_total             8125
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol502656g_si_003.cif
_cod_data_source_block           140319a_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/home/saulius/struct/COD-crude-data--automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2827 2014-09-09 07:05:25Z andrius 

 Adding full bibliography for 1518014--1518015.cif.
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1518014