[2+2]-Photocycloaddition of N-Benzylmaleimide to Alkenes As an Approach to Functional 3-Azabicyclo[3.2.0]heptanes.
Skalenko, Yevhen A.; Druzhenko, Tetiana V.; Denisenko, Aleksandr V.; Samoilenko, Maryna V.; Dacenko, Oleksandr P.; Trofymchuk, Serhii A.; Grygorenko, Oleksandr O.; Tolmachev, Andrey A.; Mykhailiuk, Pavel K.; The Journal of organic chemistry 83 (2018) 6275–6289; doi:10.1021/acs.joc.8b00077

data_4035842
_publ_section_title
;
 [2+2]-Photocycloaddition of N-Benzylmaleimide to Alkenes As an Approach
 to Functional 3-Azabicyclo[3.2.0]heptanes.
;
_journal_issue                   12
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              6275
_journal_page_last               6289
_journal_paper_doi               10.1021/acs.joc.8b00077
_journal_volume                  83
_journal_year                    2018
_chemical_formula_sum            'C15 H14 F N O4'
_chemical_formula_weight         291.27
_space_group_crystal_system      monoclinic
_space_group_IT_number           7
_space_group_name_Hall           'P -2yc'
_space_group_name_H-M_alt        'P 1 c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 101.719(9)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   13.4599(13)
_cell_length_b                   5.9693(4)
_cell_length_c                   8.7884(10)
_cell_measurement_reflns_used    892
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      22.7
_cell_measurement_theta_min      3.7
_cell_volume                     691.40(12)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 16.1827
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Xcalibur, Sapphire3'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0550
_diffrn_reflns_av_unetI/netI     0.0599
_diffrn_reflns_Laue_measured_fraction_full 0.987
_diffrn_reflns_Laue_measured_fraction_max 0.988
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            5955
_diffrn_reflns_point_group_measured_fraction_full 0.691
_diffrn_reflns_point_group_measured_fraction_max 0.680
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.997
_diffrn_reflns_theta_min         3.413
_diffrn_source                   'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.111
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.275
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.36.32 (release 02-08-2013 CrysAlis171 .NET)
(compiled Aug  2 2013,16:46:58)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.399
_exptl_crystal_description       block
_exptl_crystal_F_000             304
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.180
_refine_diff_density_max         0.114
_refine_diff_density_min         -0.116
_refine_diff_density_rms         0.032
_refine_ls_abs_structure_details
;
 Flack x determined using 242 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.9(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.840
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     191
_refine_ls_number_reflns         2743
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.840
_refine_ls_R_factor_all          0.1070
_refine_ls_R_factor_gt           0.0484
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0362P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0936
_refine_ls_wR_factor_ref         0.1149
_reflns_Friedel_coverage         0.374
_reflns_Friedel_fraction_full    0.394
_reflns_Friedel_fraction_max     0.371
_reflns_number_gt                1330
_reflns_number_total             2743
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo8b00077_si_002.cif
_cod_data_source_block           17a
_cod_original_sg_symbol_H-M      'P c'
_cod_database_code               4035842
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.978
_shelx_estimated_absorpt_t_max   0.980
_shelx_hkl_checksum              63066