Facile synthesis of spiroisoquinolines based on photocycloaddition of isoquinoline-1,3,4-trione with oxazoles.
Huang, Chengmei; Yu, Haitao; Miao, Zhengrui; Zhou, Jie; Wang, Shuai; Fun, Hoong-Kun; Xu, Jianhua; Zhang, Yan; Organic & biomolecular chemistry 9 (2011) 3629–3631; doi:10.1039/c1ob05143a

data_7151868
_publ_section_title
;
 Facile synthesis of spiroisoquinolines based on photocycloaddition of
 isoquinoline-1,3,4-trione with oxazoles.
;
_journal_issue                   10
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              3629
_journal_page_last               3631
_journal_paper_doi               10.1039/c1ob05143a
_journal_volume                  9
_journal_year                    2011
_chemical_formula_moiety         'C16 H16 N2 O5'
_chemical_formula_sum            'C16 H16 N2 O5'
_chemical_formula_weight         316.31
_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                 121.994(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.2295(5)
_cell_length_b                   11.0370(7)
_cell_length_c                   17.1487(8)
_cell_measurement_reflns_used    9842
_cell_measurement_temperature    100.0(1)
_cell_measurement_theta_max      36.14
_cell_measurement_theta_min      2.63
_cell_volume                     1481.53(15)
_computing_cell_refinement       'SAINT (Bruker, 2009)'
_computing_data_collection       'APEX2 (Bruker, 2009)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material
;
SHELXTL (Sheldrick, 2008), PLATON (Spek, 2009)
;
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.0(1)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type
;
Bruker APEXII DUO CCD area-detector diffractometer
;
_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  0.0277
_diffrn_reflns_av_sigmaI/netI    0.0167
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            49112
_diffrn_reflns_theta_full        36.21
_diffrn_reflns_theta_max         36.21
_diffrn_reflns_theta_min         2.32
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.107
_exptl_absorpt_correction_T_max  0.9745
_exptl_absorpt_correction_T_min  0.9525
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(<i>SADABS</i>; Bruker, 2009)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.418
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.348
_exptl_crystal_size_min          0.243
_refine_diff_density_max         0.551
_refine_diff_density_min         -0.263
_refine_diff_density_rms         0.062
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     272
_refine_ls_number_reflns         7106
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0419
_refine_ls_R_factor_gt           0.0363
_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^)+(0.0634P)^2^+0.2363P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1023
_refine_ls_wR_factor_ref         0.1077
_reflns_number_gt                6224
_reflns_number_total             7106
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c1ob05143a.txt
_cod_data_source_block           z15a_0m
_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 1555 2011-01-17 13:19:09Z saulius 
;
_cod_original_cell_volume        1481.53(14)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7151868