Phosphine-Mediated Reductive Condensation of γ-Acyloxy Butynoates: A Diversity Oriented Strategy for the Construction of Substituted Furans
Cheol-Kyu Jung; Jian-Cheng Wang; Michael J. Krische; Journal of the American Chemical Society 126 (2004) 4118–4119; doi:10.1021/ja049377l

data_4112401
_publ_section_title
;
 Phosphine-Mediated Reductive Condensation of \g-Acyloxy Butynoates: A
 Diversity Oriented Strategy for the Construction of Substituted Furans
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              4118
_journal_page_last               4119
_journal_paper_doi               10.1021/ja049377l
_journal_volume                  126
_journal_year                    2004
_chemical_formula_sum            'C13 H11 N O5'
_chemical_formula_weight         261.23
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 100.367(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.1593(3)
_cell_length_b                   13.2888(6)
_cell_length_c                   6.9813(6)
_cell_measurement_temperature    153(2)
_cell_volume                     1200.90(12)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_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  0.0764
_diffrn_reflns_av_sigmaI/netI    0.1166
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            4679
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         3.07
_exptl_absorpt_coefficient_mu    0.113
_exptl_crystal_density_diffrn    1.445
_exptl_crystal_F_000             544
_refine_diff_density_max         0.314
_refine_diff_density_min         -0.292
_refine_diff_density_rms         0.072
_refine_ls_extinction_coef       0.010(4)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   2.086
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         2733
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      2.086
_refine_ls_R_factor_all          0.2318
_refine_ls_R_factor_gt           0.1881
_refine_ls_shift/su_max          0.049
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0200P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1504
_refine_ls_wR_factor_ref         0.1552
_reflns_number_gt                2107
_reflns_number_total             2733
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja049377lsi20040204_100530.cif
_cod_data_source_block           jc435
_cod_database_code               4112401