Metal-Free [2 + 2]-Photocycloaddition of (Z)-4-Aryliden-5(4H)-Oxazolones as Straightforward Synthesis of 1,3-Diaminotruxillic Acid Precursors: Synthetic Scope and Mechanistic Studies
García-Montero, Angel; Rodriguez, Antonio M.; Juan, Alberto; Velders, Aldrik H.; Denisi, Antonio; Jiménez-Osés, Gonzalo; Gómez-Bengoa, Enrique; Cativiela, Carlos; Gómez, Maria Victoria; Urriolabeitia, Esteban P.; ACS Sustainable Chemistry & Engineering 5 (2017) 8370–; doi:10.1021/acssuschemeng.7b02140

data_4517022
_publ_section_title
;
 Metal-Free [2 + 2]-Photocycloaddition of (Z)-4-Aryliden-5(4H)-Oxazolones
 as Straightforward Synthesis of 1,3-Diaminotruxillic Acid Precursors:
 Synthetic Scope and Mechanistic Studies
;
_journal_issue                   9
_journal_name_full               'ACS Sustainable Chemistry &amp; Engineering'
_journal_page_first              8370
_journal_paper_doi               10.1021/acssuschemeng.7b02140
_journal_volume                  5
_journal_year                    2017
_chemical_formula_sum            'C38 H34 Cl4 N2 O8'
_chemical_formula_weight         788.47
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_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                 111.643(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.9228(5)
_cell_length_b                   17.8301(6)
_cell_length_c                   16.4720(7)
_cell_measurement_reflns_used    3957
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      24.0750
_cell_measurement_theta_min      3.2920
_cell_volume                     3800.8(3)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.31 (release 14-01-2014 CrysAlis171 .NET)
(compiled Jan 14 2014,18:38:05)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.31 (release 14-01-2014 CrysAlis171 .NET)
(compiled Jan 14 2014,18:38:05)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.31 (release 14-01-2014 CrysAlis171 .NET)
(compiled Jan 14 2014,18:38:05)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 16.3990
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Xcalibur, Sapphire3'
_diffrn_measurement_method       '\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  0.0650
_diffrn_reflns_av_sigmaI/netI    0.0687
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            27374
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.90
_exptl_absorpt_coefficient_mu    0.365
_exptl_absorpt_correction_T_max  0.9749
_exptl_absorpt_correction_T_min  0.8414
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.378
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1632
_exptl_crystal_size_max          0.49
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.637
_refine_diff_density_min         -0.592
_refine_diff_density_rms         0.067
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     473
_refine_ls_number_reflns         6682
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.1056
_refine_ls_R_factor_gt           0.0630
_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^)+(0.0770P)^2^+2.9733P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1514
_refine_ls_wR_factor_ref         0.1780
_reflns_number_gt                4360
_reflns_number_total             6682
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            sc7b02140_si_002.cif
_cod_data_source_block           '__2f1.2CH2Cl2'
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        3800.8(2)
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               4517022