Ethyl 5-(5-oxo-2,3-dihydro-5<i>H</i>-oxazolo[2,3-<i>a</i>]isoindol-9b-ylmethyl)-4-(2,5,5-trimethyl-1,3-dioxan-2-yl)isoxazole-3-carboxylate: the product of a novel synthetic method
Nelson, Jared; Twamley, Brendan; Natale, Nicholas R.; Acta Crystallographica Section E 60 (2004) o2255–o2257; doi:10.1107/S1600536804027655

data_2204810
_publ_section_title
;Ethyl
 5-(5-oxo-2,3-dihydro-5<i>H</i>-oxazolo[2,3-<i>a</i>]isoindol-9b-ylmethyl)-4-(2,5,5-trimethyl-1,3-dioxan-2-yl)isoxazole-3-carboxylate:
 the product of a novel synthetic method
;
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2255
_journal_page_last               o2257
_journal_paper_doi               10.1107/S1600536804027655
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'C24 H28 N2 O7'
_chemical_formula_moiety         'C24 H28 N2 O7'
_chemical_formula_sum            'C24 H28 N2 O7'
_chemical_formula_weight         456.48
_chemical_melting_point          161
_chemical_name_common
'substituted isoxazole carboxylic acid ethyl ester'
_chemical_name_systematic
;Ethyl
5-(5-oxo-2,3-dihydro-5H-oxazolo[2,3-a]isoindol-9b-ylmethyl)-4-(2,5,5-trimethyl-
1,3-dioxan-2-yl)isoxazole-3-carboxylate
;
_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                 91.76(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.302(3)
_cell_length_b                   11.707(2)
_cell_length_c                   14.412(3)
_cell_measurement_reflns_used    5056
_cell_measurement_temperature    85(2)
_cell_measurement_theta_max      27.55
_cell_measurement_theta_min      2.24
_cell_volume                     2243.3(8)
_computing_cell_refinement       'SAINT-Plus (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        SAINT-Plus
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Bruker, 2001)'
_diffrn_ambient_temperature      85(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker--Siemens SMART APEX'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0448
_diffrn_reflns_av_sigmaI/netI    0.0550
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            17860
_diffrn_reflns_theta_full        27.56
_diffrn_reflns_theta_max         27.56
_diffrn_reflns_theta_min         2.05
_diffrn_standards_decay_%        <0.01
_exptl_absorpt_coefficient_mu    0.100
_exptl_absorpt_correction_T_max  0.987
_exptl_absorpt_correction_T_min  0.976
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2001)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.352
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             968
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.38
_refine_diff_density_min         -0.27
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     302
_refine_ls_number_reflns         5153
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.070
_refine_ls_R_factor_gt           0.048
_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^)+(0.0555P)^2^+0.2378P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.107
_refine_ls_wR_factor_ref         0.117
_reflns_number_gt                3773
_reflns_number_total             5153
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            wk6034.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2204810
_cod_database_fobs_code          2204810