Regioselective base-mediated cyclizations of mono-N-acylpropargylguanadines.
Salvant, Justin Michael; Edwards, Anne Victoria; Kurek, Daniel Zachary; Looper, Ryan E.; The Journal of organic chemistry  (2017) –; doi:10.1021/acs.joc.7b00639

data_4032581
_publ_section_title
;
 Regioselective base-mediated cyclizations of
 mono-N-acylpropargylguanadines.
;
_journal_name_full               'The Journal of organic chemistry'
_journal_paper_doi               10.1021/acs.joc.7b00639
_journal_year                    2017
_chemical_formula_moiety         'C26 H25 N3 O3'
_chemical_formula_sum            'C26 H25 N3 O3'
_chemical_formula_weight         427.49
_chemical_name_common            rl022
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   mixed
_cell_angle_alpha                89.154(3)
_cell_angle_beta                 62.158(2)
_cell_angle_gamma                85.360(2)
_cell_formula_units_Z            2
_cell_length_a                   10.7534(5)
_cell_length_b                   10.9377(5)
_cell_length_c                   10.9416(5)
_cell_measurement_reflns_used    9409
_cell_measurement_temperature    150(1)
_cell_measurement_theta_max      27.9114
_cell_measurement_theta_min      2.1961
_cell_volume                     1133.83(9)
_computing_cell_refinement       'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_data_collection
'Bruker Instrument Service 2014.9.0.0 (Bruker AXS Inc.)'
_computing_data_reduction        'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_molecular_graphics
'ORTEP-3 (L. J. Farrugia, J. Appl. Cryst. (2012),45, 849-854.)'
_computing_publication_material  'APEX2 v2014.9-0 (Bruker AXS Inc.)'
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT-2014/9 (Sheldrick, 2014)'
_diffrn_ambient_temperature      150(1)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker Kappa APEX II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0264
_diffrn_reflns_av_unetI/netI     0.0147
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            46802
_diffrn_reflns_theta_full        27.87
_diffrn_reflns_theta_max         27.87
_diffrn_reflns_theta_min         2.11
_diffrn_source                   'fine-focus tube'
_diffrn_source_type              'Siemans KFFMO2K-90'
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.95
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Sheldrick, G. M. (2014). SADABS V2014/4 BRUKER AXS Inc. Madison WI 53711 USA
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.252
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             452
_exptl_crystal_size_max          0.350
_exptl_crystal_size_mid          0.336
_exptl_crystal_size_min          0.168
_refine_diff_density_max         0.253
_refine_diff_density_min         -0.225
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     295
_refine_ls_number_reflns         5411
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0453
_refine_ls_R_factor_gt           0.0375
_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^)+(0.0430P)^2^+0.3887P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0913
_refine_ls_wR_factor_ref         0.0977
_reflns_number_gt                4636
_reflns_number_total             5411
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo7b00639_si_001.cif
_cod_data_source_block           I
_cod_database_code               4032581
_shelx_res_checksum              45684
_shelx_hkl_checksum              67666