Silver(I)-Catalyzed Reaction between Pyrazole and Propargyl Acetates: Stereoselective Synthesis of the Scorpionate Ligands (E)-Allyl-gem-dipyrazoles (ADPs)
M. Bhanuchandra; Malleswara Rao Kuram; Akhila K. Sahoo; Journal of Organic Chemistry 78 (2013) 11824–11834; doi:10.1021/jo401867e

data_4028795
_publ_section_title
;
 Silver(I)-Catalyzed Reaction between Pyrazole and Propargyl Acetates:
 Stereoselective Synthesis of the Scorpionate Ligands
 (E)-Allyl-gem-dipyrazoles (ADPs)
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              11824
_journal_page_last               11834
_journal_paper_doi               10.1021/jo401867e
_journal_volume                  78
_journal_year                    2013
_chemical_formula_sum            'C18 H16 N2 O2'
_chemical_formula_weight         292.33
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_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.6054(14)
_cell_length_b                   11.951(4)
_cell_length_c                   17.019(6)
_cell_measurement_temperature    293(2)
_cell_volume                     1546.9(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0531
_diffrn_reflns_av_sigmaI/netI    0.1812
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            4467
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         2.93
_exptl_absorpt_coefficient_mu    0.083
_exptl_crystal_density_diffrn    1.255
_exptl_crystal_F_000             616
_refine_diff_density_max         0.146
_refine_diff_density_min         -0.157
_refine_diff_density_rms         0.036
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -2(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.986
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         2973
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.986
_refine_ls_R_factor_all          0.2406
_refine_ls_R_factor_gt           0.0813
_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^)+(0.0000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0658
_refine_ls_wR_factor_ref         0.1049
_reflns_number_gt                1027
_reflns_number_total             2973
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo401867e_si_003.cif
_cod_data_source_block           exp_4223
_cod_original_cell_volume        1547.0(8)
_cod_database_code               4028795