K2CO3-Promoted Domino Reactions: Construction of Functionalized 2,3-Dihydrobenzofurans and Clofibrate Analogues
Qu-Bo Li; Fei-Ting Zhou; Zheng-Geng Liu; Xue-Feng Li; Wei-Dong Zhu; Jian-Wu Xie; Journal of Organic Chemistry 76 (2011) 7222–7228; doi:10.1021/jo2008675

data_4026537
_publ_section_title
;
 K2CO3-Promoted Domino Reactions: Construction of Functionalized
 2,3-Dihydrobenzofurans and Clofibrate Analogues
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              7222
_journal_page_last               7228
_journal_paper_doi               10.1021/jo2008675
_journal_volume                  76
_journal_year                    2011
_chemical_formula_moiety         'C19 H19 N O4'
_chemical_formula_sum            'C19 H19 N O4'
_chemical_formula_weight         325.35
_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                116.080(6)
_cell_angle_beta                 91.797(6)
_cell_angle_gamma                109.652(4)
_cell_formula_units_Z            2
_cell_length_a                   7.9833(5)
_cell_length_b                   11.2090(7)
_cell_length_c                   11.4737(12)
_cell_measurement_reflns_used    3268
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.66
_cell_measurement_theta_min      2.02
_cell_volume                     848.75(13)
_computing_cell_refinement       'SAINT (Bruker, 2006)'
_computing_data_collection       'APEXII (Bruker, 2006)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.970
_diffrn_measured_fraction_theta_max 0.970
_diffrn_measurement_device_type  'Bruker APEXII'
_diffrn_measurement_method       '\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  0.0277
_diffrn_reflns_av_sigmaI/netI    0.0322
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            13331
_diffrn_reflns_theta_full        27.66
_diffrn_reflns_theta_max         27.66
_diffrn_reflns_theta_min         2.02
_diffrn_standards_decay_%        none
_diffrn_standards_interval_count none
_diffrn_standards_interval_time  none
_diffrn_standards_number         none
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  .99
_exptl_absorpt_correction_T_min  .98
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.273
_exptl_crystal_description       block
_exptl_crystal_F_000             344
_exptl_crystal_size_max          .36
_exptl_crystal_size_mid          .16
_exptl_crystal_size_min          .12
_refine_diff_density_max         0.260
_refine_diff_density_min         -0.210
_refine_diff_density_rms         0.038
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         3846
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_gt           0.0533
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0768P)^2^+0.1666P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1429
_refine_ls_wR_factor_ref         0.1664
_reflns_number_gt                2245
_reflns_number_total             3846
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo2008675_si_004.cif
_cod_data_source_block           a
_cod_original_cell_volume        848.75(12)
_cod_original_sg_symbol_Hall     '-P 1 '
_cod_database_code               4026537
_refine_ls_r_factor_ref          0.0979