Regioselective 5-<i>exo-dig</i> (halo)cyclization of <i>N</i>-propargyloxycarbonyl guanidine derivatives under mild conditions.
Lin, Bohong; Ruan, Yaoping; Hou, Qi; Yuan, Zhijun; Liang, Yunshi; Zhang, Jing; Organic & biomolecular chemistry 22 (2024) 5585–5590; doi:10.1039/d4ob00579a

data_7159982
_publ_section_title
;
 Regioselective 5-<i>exo-dig</i> (halo)cyclization of
 <i>N</i>-propargyloxycarbonyl guanidine derivatives under mild
 conditions.
;
_journal_issue                   27
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              5585
_journal_page_last               5590
_journal_paper_doi               10.1039/d4ob00579a
_journal_volume                  22
_journal_year                    2024
_chemical_formula_moiety         'C12 H12 Cl N3 O2'
_chemical_formula_sum            'C12 H12 Cl N3 O2'
_chemical_formula_weight         265.70
_space_group_crystal_system      tetragonal
_space_group_IT_number           92
_space_group_name_Hall           'P 4abw 2nw'
_space_group_name_H-M_alt        'P 41 21 2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2022-06-15
_audit_creation_method
;
Olex2 1.5
(compiled 2021.08.20 svn.r13c46975 for OlexSys, GUI svn.r6396)
;
_audit_update_record
;
2023-03-24 deposited with the CCDC.	2024-06-14 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   9.38970(10)
_cell_length_b                   9.38970(10)
_cell_length_c                   28.9002(6)
_cell_measurement_reflns_used    9898
_cell_measurement_temperature    298.00
_cell_measurement_theta_max      60.313
_cell_measurement_theta_min      4.304
_cell_volume                     2548.03(7)
_computing_cell_refinement       'SAINT V8.38A (Bruker, 2018)'
_computing_data_reduction        'SAINT V8.38A (Bruker, 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 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      298.00
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0579
_diffrn_reflns_av_unetI/netI     0.0283
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.975
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            23658
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.972
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.437
_diffrn_reflns_theta_min         2.281
_diffrn_source_current           1.4
_diffrn_source_power             0.07
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.297
_exptl_absorpt_correction_T_max  0.7519
_exptl_absorpt_correction_T_min  0.5897
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1270 before and 0.0611 after correction.
The Ratio of minimum to maximum transmission is 0.7843.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.385
_exptl_crystal_description       block
_exptl_crystal_F_000             1104
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.137
_refine_diff_density_min         -0.335
_refine_diff_density_rms         0.044
_refine_ls_abs_structure_details
;
 Flack x determined using 913 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.95(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     164
_refine_ls_number_reflns         2838
_refine_ls_number_restraints     126
_refine_ls_restrained_S_all      1.077
_refine_ls_R_factor_all          0.0469
_refine_ls_R_factor_gt           0.0412
_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^)+(0.0426P)^2^+1.1518P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0979
_refine_ls_wR_factor_ref         0.1008
_reflns_Friedel_coverage         0.637
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.968
_reflns_number_gt                2558
_reflns_number_total             2838
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4ob00579a2.cif
_cod_data_source_block           11_CCDC2
_cod_depositor_comments
'Adding full bibliography for 7159978--7159982.cif.'
_cod_original_cell_volume        2548.03(8)
_cod_database_code               7159982
_shelx_shelxl_version_number     2018/3
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H) groups, All N(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Uiso/Uaniso restraints and constraints
C1 \\sim H1A \\sim H1B \\sim H1C \\sim C2 \\sim C3 \\sim H3 \\sim C4 \\sim H4
\\sim C5 \\sim C6 \\sim C7 \\sim H7: within 2A with sigma of 0.01 and sigma for
terminal atoms of 0.02 within 2A
3. Rigid body (RIGU) restrains
 C1, H1A, H1B, H1C, C2, C3, H3, C4, H4, C5, C6, C7, H7
 with sigma for 1-2 distances of 0.001 and sigma for 1-3 distances of 0.002
4.a Secondary CH2 refined with riding coordinates:
 C10(H10A,H10B)
4.b Aromatic/amide H refined with riding coordinates:
 N1(H1), C3(H3), C4(H4), C7(H7)
4.c X=CH2 refined with riding coordinates:
 N2(H2A,H2B)
4.d Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C)
4.e :
 C12(H12)
;
_shelx_res_checksum              49763
_shelx_hkl_checksum              67675
_olex2_submission_special_instructions 'No special instructions were received'