DBU-promoted ring-opening reactions of multi-substituted donor–acceptor cyclopropanes: access to functionalized chalcones with a quaternary carbon group
Luo, Naili; Liu, Jiamin; Wang, Shan; Wang, Cunde; Organic & Biomolecular Chemistry 18 (2020) 9210–9215; doi:10.1039/D0OB01895C

data_7157768
_publ_section_title
;
 DBU-promoted ring-opening reactions of multi-substituted donor--acceptor
 cyclopropanes: access to functionalized chalcones with a quaternary
 carbon group
;
_journal_issue                   45
_journal_name_full               'Organic &amp; Biomolecular Chemistry'
_journal_page_first              9210
_journal_page_last               9215
_journal_paper_doi               10.1039/D0OB01895C
_journal_volume                  18
_journal_year                    2020
_chemical_formula_moiety         'C22 H19 Br Cl N O3'
_chemical_formula_sum            'C22 H19 Br Cl N O3'
_chemical_formula_weight         460.73
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2020-09-25 deposited with the CCDC.	2020-10-22 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 102.956(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.6584(17)
_cell_length_b                   7.2134(7)
_cell_length_c                   19.131(2)
_cell_measurement_reflns_used    6949
_cell_measurement_temperature    296
_cell_measurement_theta_max      24.35
_cell_measurement_theta_min      2.67
_cell_volume                     2105.8(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      296
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0459
_diffrn_reflns_av_sigmaI/netI    0.0439
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            22317
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         1.52
_exptl_absorpt_coefficient_mu    2.101
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.453
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             936
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.33
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.215
_refine_diff_density_min         -0.327
_refine_diff_density_rms         0.067
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     256
_refine_ls_number_reflns         4822
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0864
_refine_ls_R_factor_gt           0.0406
_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^)+(0.0679P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1014
_refine_ls_wR_factor_ref         0.1269
_reflns_number_gt                2970
_reflns_number_total             4841
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            d0ob01895c3.cif
_cod_data_source_block           001
_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/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/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 7556 2019-12-06 15:28:31Z antanas 
;
_cod_original_sg_symbol_H-M      'P2(1)/n  '
_cod_database_code               7157768