Enantioselective synthesis of 4-aryl-3,4-dihydrocoumarins <i>via</i> N-heterocyclic carbene catalyzed β-arylation/cyclization of α-bromoenals.
Liang, Yu-Jing; Gao, Yuan-Yuan; Han, Hua-Bo; Li, Lu; Liu, Lantao; Organic & biomolecular chemistry 22 (2024) 5101–5104; doi:10.1039/d4ob00756e

data_7160028
_publ_section_title
;
 Enantioselective synthesis of 4-aryl-3,4-dihydrocoumarins <i>via</i>
 N-heterocyclic carbene catalyzed &#x3b2;-arylation/cyclization of
 &#x3b1;-bromoenals.
;
_journal_issue                   25
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              5101
_journal_page_last               5104
_journal_paper_doi               10.1039/d4ob00756e
_journal_volume                  22
_journal_year                    2024
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C17 H16 Br N O2'
_chemical_formula_sum            'C17 H16 Br N O2'
_chemical_formula_weight         346.22
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2022-07-15
_audit_creation_method
;
Olex2 1.5
(compiled 2022.04.07 svn.rca3783a0 for OlexSys, GUI svn.r6498)
;
_audit_update_record
;
2024-03-21 deposited with the CCDC.	2024-05-21 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.7063(4)
_cell_length_b                   7.9223(4)
_cell_length_c                   32.7085(16)
_cell_measurement_reflns_used    5657
_cell_measurement_temperature    170.00(10)
_cell_measurement_theta_max      27.3020
_cell_measurement_theta_min      2.8170
_cell_volume                     1478.65(15)
_computing_cell_refinement       'CrysAlisPro 1.171.39.45i (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.39.45i (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.39.45i (Rigaku OD, 2018)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      170.00(10)
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.900
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w   -104.00  74.00   0.50    5.00    --  -14.80  45.00 150.00  356
  2  \w   -104.00  74.00   0.50    5.00    --  -14.80  45.00   0.00  356
  3  \w     29.00  73.00   0.50    5.00    --  -14.80  45.00  30.00   88
  4  \w     25.00  58.00   0.50    5.00    --  -14.80  45.00  90.00   66
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'XtaLAB AFC10 (RCD3): fixed-chi single'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      -0.1234657000
_diffrn_orient_matrix_UB_12      0.0101647000
_diffrn_orient_matrix_UB_13      -0.0012286000
_diffrn_orient_matrix_UB_21      -0.0145043000
_diffrn_orient_matrix_UB_22      -0.0884431000
_diffrn_orient_matrix_UB_23      0.0020838000
_diffrn_orient_matrix_UB_31      -0.0057201000
_diffrn_orient_matrix_UB_32      0.0091943000
_diffrn_orient_matrix_UB_33      0.0215356000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0444
_diffrn_reflns_av_unetI/netI     0.0457
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.900
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       43
_diffrn_reflns_limit_l_min       -44
_diffrn_reflns_number            16468
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.874
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.690
_diffrn_reflns_theta_min         2.491
_diffrn_source                   'Rotating-anode X-ray tube'
_diffrn_source_type              'Rigaku (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    2.784
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.56720
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.45i (Rigaku Oxford Diffraction, 2018)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.555
_exptl_crystal_description       prism
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.970
_refine_diff_density_min         -0.547
_refine_diff_density_rms         0.074
_refine_ls_abs_structure_details
;
 Flack x determined using 1149 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.004(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     192
_refine_ls_number_reflns         4006
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0540
_refine_ls_R_factor_gt           0.0406
_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^)+(0.0376P)^2^+0.4854P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0789
_refine_ls_wR_factor_ref         0.0825
_reflns_Friedel_coverage         0.665
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.839
_reflns_number_gt                3399
_reflns_number_total             4006
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4ob00756e2.cif
_cod_data_source_block           mx10532
_cod_database_code               7160028
_shelx_shelxl_version_number     2018/3
_chemical_oxdiff_formula         CHNOBr
_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:
 C1(H1)
2.b Secondary CH2 refined with riding coordinates:
 C2(H2A,H2B)
2.c Aromatic/amide H refined with riding coordinates:
 C5(H5), C7(H7), C8(H8), C11(H11), C12(H12), C14(H14), C15(H15)
2.d Idealised Me refined as rotating group:
 C16(H16A,H16B,H16C), C17(H17A,H17B,H17C)
;
_shelx_res_checksum              24389
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 2.145
_oxdiff_exptl_absorpt_empirical_full_min 0.628