A new consecutive three-component oxazole synthesis by an amidation–coupling–cycloisomerization (ACCI) sequence
E.Merkul; T.J.J.Muller; Chemical Communications  (2006) –; doi:10.1039/b610839c

data_7101562
_publ_section_title
;
A new consecutive three-component oxazole synthesis by an
amidation--coupling--cycloisomerization (ACCI) sequence
;
_journal_issue                   46
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/b610839c
_journal_year                    2006
_chemical_formula_sum            'C19 H17 N O3'
_chemical_formula_weight         307.34
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.0
_cell_angle_beta                 90.0
_cell_angle_gamma                90.0
_cell_formula_units_Z            4
_cell_length_a                   4.6910(1)
_cell_length_b                   10.5327(2)
_cell_length_c                   31.2403(6)
_cell_measurement_temperature    200(2)
_cell_volume                     1543.55(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.049
_diffrn_reflns_av_sigmaI/netI    0.037
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       37
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            13309
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         2.04
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  0.9893
_exptl_absorpt_correction_T_min  0.9667
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colurless
_exptl_crystal_density_diffrn    1.323
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             648
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.116
_refine_diff_density_min         -0.184
_refine_diff_density_rms         0.038
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.2(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     276
_refine_ls_number_reflns         2738
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0483
_refine_ls_R_factor_gt           0.0351
_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^)+(0.0456P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0739
_refine_ls_wR_factor_ref         0.0796
_reflns_number_gt                2324
_reflns_number_total             2738
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b610839c.txt
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7101562