Fast & easy preparation of 3D scaffolds from methyl benzoate by a diversity oriented synthesis strategy based on Diels-Alder and ene-reactions
BROSSARD, Dominique; Retailleau, Pascal; Dumontet, Vincent; Breton, Philippe; Desrat, Sandy; Roussi, Fanny; Org. Biomol. Chem.  (2017) –; doi:10.1039/C7OB01236E

data_7155671
_publ_section_title
;
 Fast &amp; easy preparation of 3D scaffolds from methyl benzoate by a
 diversity oriented synthesis strategy based on Diels-Alder and
 ene-reactions
;
_journal_name_full               'Org. Biomol. Chem.'
_journal_paper_doi               10.1039/C7OB01236E
_journal_year                    2017
_chemical_formula_moiety         'C15 H17 Br O4'
_chemical_formula_sum            'C15 H17 Br O4'
_chemical_formula_weight         341.20
_chemical_name_systematic
'rac-(3S,5aR,6S,9S,9aS,10R)-methyl 10-bromo-1-oxo-3,4,5,5a,6,9-hexahydro-1H-6,9-ethano-3,9a-methanobenzo[c]oxepine-7-carboxylate'
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-I 2ya'
_space_group_name_H-M_alt        'I 1 2/a 1'
_symmetry_space_group_name_Hall  '-I 2ya'
_symmetry_space_group_name_H-M   'I 1 2/a 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014
_audit_update_record
;
2017-01-30 deposited with the CCDC.
2017-06-08 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 101.857(11)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   16.036(3)
_cell_length_b                   7.932(2)
_cell_length_c                   22.399(3)
_cell_measurement_reflns_used    3328
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      0.407
_cell_volume                     2788.3(10)
_computing_cell_refinement       'Denzo (Otwinowski, Z. & Minor, W., 1997)'
_computing_data_collection
'COLLECT (Nonius, 1998);Denzo (Otwinowski, Z. & Minor, W., 1997)'
_computing_data_reduction        'Scalepack (Otwinowski, Z. & Minor, W., 1997)'
_computing_molecular_graphics    'MERCURY (Macrae, 2006)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'SIR97 (Altomare et al, 1999)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Nonius kappa-CCD diffractometer'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0185
_diffrn_reflns_av_sigmaI/netI    0.0265
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            18544
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.509
_diffrn_reflns_theta_min         2.865
_diffrn_source                   'fine-focus sealed tube'
_diffrn_source_type              'Nonius Kappa CCD'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.959
_exptl_absorpt_correction_T_max  0.54
_exptl_absorpt_correction_T_min  0.47
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Scalepack (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.626
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1392
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: hot ethyl acetate'
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.21
_refine_diff_density_max         0.271
_refine_diff_density_min         -0.533
_refine_diff_density_rms         0.055
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     182
_refine_ls_number_reflns         3185
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0493
_refine_ls_R_factor_gt           0.0333
_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^)+(0.0434P)^2^+2.2037P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0797
_refine_ls_wR_factor_ref         0.0878
_reflns_number_gt                2485
_reflns_number_total             3185
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7ob01236e2.cif
_cod_data_source_block           Compound_beta-25
_cod_database_code               7155671
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C9(H9), C5(H5), C4(H4), C1(H1), C8(H8)
2.b Secondary CH2 refined with riding coordinates:
 C7(H7A,H7B), C6(H6A,H6B), C11(H11A,H11B), C12(H12A,H12B)
2.c Aromatic/amide H refined with riding coordinates:
 C2(H2)
2.d Idealised Me refined as rotating group:
 C14(H14A,H14B,H14C)
;
_shelx_res_checksum              49570