Tandem four-component reaction for efficient synthesis of dihydrothiophene with substituted amino acid ethyl esters
Sun, Jing; Zhang, Yu; Yan, Chao-Guo; RSC Advances 8 (2018) 22498–; doi:10.1039/C8RA03605E

data_7230966
_publ_section_title
;
 Tandem four-component reaction for efficient synthesis of
 dihydrothiophene with substituted amino acid ethyl esters
;
_journal_issue                   40
_journal_name_full               'RSC Advances'
_journal_page_first              22498
_journal_paper_doi               10.1039/C8RA03605E
_journal_volume                  8
_journal_year                    2018
_chemical_formula_moiety         'C18 H20 N4 O5 S'
_chemical_formula_sum            'C18 H20 N4 O5 S'
_chemical_formula_weight         404.44
_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   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2018-02-14 deposited with the CCDC.
2018-06-13 downloaded from the CCDC.
;
_cell_angle_alpha                94.156(5)
_cell_angle_beta                 102.111(4)
_cell_angle_gamma                102.813(5)
_cell_formula_units_Z            2
_cell_length_a                   8.1334(13)
_cell_length_b                   9.0145(15)
_cell_length_c                   14.731(2)
_cell_measurement_reflns_used    2751
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.08
_cell_measurement_theta_min      2.33
_cell_volume                     1021.7(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.950
_diffrn_measured_fraction_theta_max 0.948
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0502
_diffrn_reflns_av_unetI/netI     0.1023
_diffrn_reflns_Laue_measured_fraction_full 0.950
_diffrn_reflns_Laue_measured_fraction_max 0.948
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            9308
_diffrn_reflns_point_group_measured_fraction_full 0.950
_diffrn_reflns_point_group_measured_fraction_max 0.948
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.605
_diffrn_reflns_theta_min         2.335
_exptl_absorpt_coefficient_mu    0.194
_exptl_absorpt_correction_T_max  0.962
_exptl_absorpt_correction_T_min  0.955
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.315
_exptl_crystal_description       block
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_refine_diff_density_max         1.547
_refine_diff_density_min         -0.828
_refine_diff_density_rms         0.137
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
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_refine_ls_number_restraints     18
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.1910
_refine_ls_R_factor_gt           0.1093
_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^)+(0.1800P)^2^+1.4713P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3032
_refine_ls_wR_factor_ref         0.3491
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2315
_reflns_number_total             4507
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8ra03605e2.cif
_cod_data_source_block           1b
_cod_original_cell_volume        1021.6(3)
_cod_database_code               7230966
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.955
_shelx_estimated_absorpt_t_max   0.962
_shelx_res_checksum              19917