Nickel Catalyzed syn-Selective Aryl Nickelation and Cyclization of Aldehyde/Enone-Tethered Terminal Alkynes with Arylboronic Acids.
Rajesh, Manda; Singam, Maneesh Kumar Reddy; Puri, Surendra; Balasubramanian, Sridhar; Sridhar Reddy, Maddi; The Journal of organic chemistry 83 (2018) 15361–15371; doi:10.1021/acs.joc.8b02618

data_4034724
_publ_section_title
;
 Nickel Catalyzed syn-Selective Aryl Nickelation and Cyclization of
 Aldehyde/Enone-Tethered Terminal Alkynes with Arylboronic Acids.
;
_journal_issue                   24
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              15361
_journal_page_last               15371
_journal_paper_doi               10.1021/acs.joc.8b02618
_journal_volume                  83
_journal_year                    2018
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C18 H18 O3'
_chemical_formula_sum            'C18 H18 O3'
_chemical_formula_weight         282.32
_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   mixed
_audit_creation_method           SHELXL-2018/3
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.4112(12)
_cell_length_b                   8.4234(15)
_cell_length_c                   27.491(5)
_cell_measurement_reflns_used    7644
_cell_measurement_temperature    294(2)
_cell_measurement_theta_max      26.43
_cell_measurement_theta_min      2.22
_cell_volume                     1484.6(5)
_computing_cell_refinement       'SAINT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        'SAINT (Bruker, 2001)'
_computing_molecular_graphics    'SHELXL2014 (Sheldrick, 2015)'
_computing_publication_material  'SHELXL2014 (Sheldrick, 2015)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXL-2014/7 (Sheldrick, 2015)'
_diffrn_ambient_temperature      294(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area-detector'
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0220
_diffrn_reflns_av_unetI/netI     0.0158
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.986
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            17374
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.971
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.283
_diffrn_reflns_theta_min         2.529
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.98
_exptl_absorpt_correction_T_min  0.92
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS; Bruker,2001'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.263
_exptl_crystal_description       block
_exptl_crystal_F_000             600
_exptl_crystal_size_max          0.240
_exptl_crystal_size_mid          0.180
_exptl_crystal_size_min          0.070
_refine_diff_density_max         0.212
_refine_diff_density_min         -0.134
_refine_diff_density_rms         0.030
_refine_ls_abs_structure_details
;
 Flack x determined using 1217 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.4(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     195
_refine_ls_number_reflns         3578
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.0423
_refine_ls_R_factor_gt           0.0378
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0628P)^2^+0.0986P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1004
_refine_ls_wR_factor_ref         0.1038
_reflns_Friedel_coverage         0.687
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.950
_reflns_number_gt                3231
_reflns_number_total             3578
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo8b02618_si_001.cif
_cod_data_source_block           be91M
_cod_database_code               4034724
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.980
_shelx_estimated_absorpt_t_max   0.994
_shelx_res_checksum              95231
_shelx_hkl_checksum              55695