Electrocatalysis in MIRC reaction strategy: facile stereoselective approach to medicinally relevant spirocyclopropylbarbiturates from barbituric acids and activated olefins
Dorofeeva, Evgeniya O.; Elinson, Michail N.; Vereshchagin, Anatoly N.; Stepanov, Nikita O.; Bushmarinov, Ivan S.; Belyakov, Pavel A.; Sokolova, Olga O.; Nikishin, Gennady I.; RSC Advances 2 (2012) 4444–; doi:10.1039/c2ra20078c

data_7238605
_publ_section_title
;
 Electrocatalysis in MIRC reaction strategy: facile stereoselective
 approach to medicinally relevant spirocyclopropylbarbiturates from
 barbituric acids and activated olefins
;
_journal_issue                   10
_journal_name_full               'RSC Advances'
_journal_page_first              4444
_journal_paper_doi               10.1039/c2ra20078c
_journal_volume                  2
_journal_year                    2012
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C17 H15 N3 O5'
_chemical_formula_sum            'C17 H15 N3 O5'
_chemical_formula_weight         341.32
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2011-11-23
_audit_creation_method
;
Olex2 1.1
(compiled 2011.11.01 svn.r2039, GUI svn.r3906)
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.4235(11)
_cell_length_b                   10.3957(12)
_cell_length_c                   15.9888(18)
_cell_measurement_reflns_used    7421
_cell_measurement_temperature    100
_cell_measurement_theta_max      30.633
_cell_measurement_theta_min      2.337
_cell_volume                     1566.3(3)
_computing_cell_refinement       'SAINT v7.60A (Bruker, 2009)'
_computing_data_collection       'SMART v5.054 (Bruker, 2001)'
_computing_data_reduction        'SAINT v7.60A (Bruker, 2009)'
_computing_molecular_graphics
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement
;
XL, G.M. Sheldrick, Acta Cryst.
(2008). A64, 112-122
;
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100
_diffrn_detector                 'CCD area detector'
_diffrn_detector_area_resol_mean 8
_diffrn_detector_type            'Bruker SMART CCD 1K area detector'
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker SMART CCD 1K area detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_xray_symbol    K-L~3~
_diffrn_reflns_av_R_equivalents  0.0365
_diffrn_reflns_av_unetI/netI     0.0222
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            20970
_diffrn_reflns_theta_full        30.73
_diffrn_reflns_theta_max         30.73
_diffrn_reflns_theta_min         2.34
_diffrn_source                   'sealed tube'
_diffrn_source_current           30.0
_diffrn_source_power             1.5
_diffrn_source_target            Mo
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.109
_exptl_absorpt_correction_T_max  0.8622
_exptl_absorpt_correction_T_min  0.7696
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
R(int) was 0.1453 before and 0.0462 after correction.
The Ratio of minimum to maximum transmission is 0.8926.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.447
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             712
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.324
_refine_diff_density_min         -0.213
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     229
_refine_ls_number_reflns         2756
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0355
_refine_ls_R_factor_gt           0.0319
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0544P)^2^+0.1730P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0823
_refine_ls_wR_factor_ref         0.0852
_reflns_number_gt                2569
_reflns_number_total             2756
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ra20078c.txt
_cod_data_source_block           a
_cod_database_code               7238605