Synthesis of functionalized unsymmetrical 1,3-butadiene-3-yne derivatives from β-halo styrene derivatives and their application in the synthesis of trisubstituted pyridines
Bandi, Vijayalakshmi; Kavala, Veerababurao; Hsu, Che-Hao; Konala, Ashok; Villuri, Bharath Kumar; Kotipalli, Trimurtulu; Kuo, Chun-Wei; Yao, Ching-Fa; RSC Adv. 7 (2017) 46704–; doi:10.1039/C7RA07128K

data_7229287
_publ_section_title
;
 Synthesis of functionalized unsymmetrical 1,3-butadiene-3-yne derivatives
 from \b-halo styrene derivatives and their application in the synthesis
 of trisubstituted pyridines
;
_journal_issue                   74
_journal_name_full               'RSC Adv.'
_journal_page_first              46704
_journal_paper_doi               10.1039/C7RA07128K
_journal_volume                  7
_journal_year                    2017
_chemical_formula_moiety         'C26 H20 O2'
_chemical_formula_sum            'C26 H20 O2'
_chemical_formula_weight         364.42
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-06-19 deposited with the CCDC.
2017-09-25 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 94.720(18)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.480(3)
_cell_length_b                   5.9054(12)
_cell_length_c                   27.814(10)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     2042.9(10)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.977
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  'Bruker APEX2'
_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  0.1502
_diffrn_reflns_av_sigmaI/netI    0.2225
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            12390
_diffrn_reflns_theta_full        25.06
_diffrn_reflns_theta_max         25.06
_diffrn_reflns_theta_min         1.47
_exptl_absorpt_coefficient_mu    0.074
_exptl_absorpt_correction_T_max  0.9963
_exptl_absorpt_correction_T_min  0.9662
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.185
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             768
_exptl_crystal_size_max          0.47
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.219
_refine_diff_density_min         -0.214
_refine_diff_density_rms         0.053
_refine_ls_extinction_coef       0.012(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     254
_refine_ls_number_reflns         3525
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.2411
_refine_ls_R_factor_gt           0.1106
_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^)+(0.0660P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1654
_refine_ls_wR_factor_ref         0.2084
_reflns_number_gt                1514
_reflns_number_total             3525
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7ra07128k2.cif
_cod_data_source_block           a17448
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7229287