Catalyst-free synthesis of novel 1,5-benzodiazepines and 3,4-dihydroquinoxalines using isocyanide-based one-pot, three- and four-component reactions
Mohlala, Reagan L.; Coyanis, E. Mabel; Fernandes, Manuel A.; Bode, Moira L.; RSC Advances 11 (2021) 24466–24473; doi:10.1039/D1RA04444C

data_7243229
_publ_section_title
;
 Catalyst-free synthesis of novel 1,5-benzodiazepines and
 3,4-dihydroquinoxalines using isocyanide-based one-pot, three- and
 four-component reactions
;
_journal_issue                   39
_journal_name_full               'RSC Advances'
_journal_page_first              24466
_journal_page_last               24473
_journal_paper_doi               10.1039/D1RA04444C
_journal_volume                  11
_journal_year                    2021
_chemical_formula_moiety         'C17 H25 N3'
_chemical_formula_sum            'C17 H25 N3'
_chemical_formula_weight         271.40
_chemical_melting_point          399.0(10)
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2021-05-26
_audit_creation_method
;
Olex2 1.3
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6272)
;
_audit_update_record
;
2021-06-03 deposited with the CCDC.	2021-07-07 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 99.072(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.7065(8)
_cell_length_b                   18.7394(15)
_cell_length_c                   8.5024(7)
_cell_measurement_reflns_used    2164
_cell_measurement_temperature    173.15
_cell_measurement_theta_max      26.96
_cell_measurement_theta_min      2.39
_cell_volume                     1527.2(2)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      173.15
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0590
_diffrn_reflns_av_unetI/netI     0.0869
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            12390
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.470
_diffrn_reflns_theta_min         2.125
_diffrn_source_current           40.0
_diffrn_source_power             2.0
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.180
_exptl_crystal_description       plate
_exptl_crystal_F_000             592
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: Ethyl-acetate'
_exptl_crystal_size_max          0.366
_exptl_crystal_size_mid          0.343
_exptl_crystal_size_min          0.108
_refine_diff_density_max         0.172
_refine_diff_density_min         -0.206
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.825
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     191
_refine_ls_number_reflns         3843
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.825
_refine_ls_R_factor_all          0.0883
_refine_ls_R_factor_gt           0.0396
_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^)+(0.0337P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0727
_refine_ls_wR_factor_ref         0.0817
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2121
_reflns_number_total             3843
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1ra04444c2.cif
_cod_data_source_block           CPMD10a_19m_mb6_isa3_0s
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_chemical_melting_point' value '398-400' was changed to
'399.0(10)' -- the average value was taken and precision was
estimated.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
;
_cod_database_code               7243229
_shelx_shelxl_version_number     2017/1
_shelx_estimated_absorpt_t_max   0.992
_shelx_estimated_absorpt_t_min   0.975
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B)
2.b Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C5(H5)
2.c Idealised Me refined as rotating group:
 C11(H11A,H11B,H11C), C12(H12A,H12B,H12C), C13(H13A,H13B,H13C), C15(H15A,H15B,
 H15C), C16(H16A,H16B,H16C), C17(H17A,H17B,H17C)
;
_shelx_res_checksum              33504
_olex2_submission_special_instructions 'No special instructions were received'