FeCl<sub>3</sub>-promoted tandem 1,4-conjugate addition/6-endo-dig cyclization/oxidation of propargylamines and benzoylacetonitriles/malononitriles: direct access to functionalized 2-aryl-4H-chromenes.
He, Xinwei; Wang, Hui; Cai, Xiaoting; Li, Qianqian; Tao, Jiajia; Shang, Yongjia; Organic & biomolecular chemistry 16 (2018) 7191–7202; doi:10.1039/c8ob01927d

data_7156413
_publ_section_title
;
 FeCl<sub>3</sub>-promoted tandem 1,4-conjugate addition/6-endo-dig
 cyclization/oxidation of propargylamines and
 benzoylacetonitriles/malononitriles: direct access to functionalized
 2-aryl-4H-chromenes.
;
_journal_issue                   39
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              7191
_journal_page_last               7202
_journal_paper_doi               10.1039/c8ob01927d
_journal_volume                  16
_journal_year                    2018
_chemical_formula_sum            'C18 H10 N2 O'
_chemical_formula_weight         270.28
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2018-05-07 deposited with the CCDC.
2018-09-07 downloaded from the CCDC.
;
_cell_angle_alpha                76.219(3)
_cell_angle_beta                 73.540(3)
_cell_angle_gamma                83.242(3)
_cell_formula_units_Z            2
_cell_length_a                   7.4925(4)
_cell_length_b                   9.5061(5)
_cell_length_c                   10.1328(6)
_cell_measurement_reflns_used    6216
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      27.46
_cell_measurement_theta_min      3.07
_cell_volume                     671.23(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \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  0.0349
_diffrn_reflns_av_sigmaI/netI    0.0322
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            12108
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.07
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.9832
_exptl_absorpt_correction_T_min  0.9807
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.337
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             280
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.168
_refine_diff_density_min         -0.187
_refine_diff_density_rms         0.036
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     190
_refine_ls_number_reflns         3001
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0843
_refine_ls_R_factor_gt           0.0574
_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^)+(0.0462P)^2^+0.2913P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1244
_refine_ls_wR_factor_ref         0.1420
_reflns_number_gt                2148
_reflns_number_total             3001
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c8ob01927d2.cif
_cod_data_source_block           mo_20160718a_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 7156412--7156413.cif.
;
_cod_original_cell_volume        671.23(6)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7156413