Diastereoselective multi-component tandem condensation: synthesis of 2-amino-4-(2-furanone)-4H-chromene-3-carbonitriles.
Gupta, Vijay; Sahu, Debashish; Jain, Shailja; Vanka, Kumar; Singh, Ravi P.; Organic & biomolecular chemistry 17 (2019) 8853–8857; doi:10.1039/c9ob01345h

data_7157077
_publ_section_title
;
 Diastereoselective multi-component tandem condensation: synthesis of
 2-amino-4-(2-furanone)-4H-chromene-3-carbonitriles.
;
_journal_issue                   39
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              8853
_journal_page_last               8857
_journal_paper_doi               10.1039/c9ob01345h
_journal_volume                  17
_journal_year                    2019
_chemical_formula_moiety         'C14 H10 N2 O3'
_chemical_formula_sum            'C14 H10 N2 O3'
_chemical_formula_weight         254.24
_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'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2019-01-07 deposited with the CCDC.    2019-09-13 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 106.075(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   15.3319(9)
_cell_length_b                   6.1459(4)
_cell_length_c                   13.6122(8)
_cell_measurement_reflns_used    7075
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.320
_cell_measurement_theta_min      2.29
_cell_volume                     1232.50(13)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.17
_diffrn_reflns_av_unetI/netI     0.0763
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            23169
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.320
_diffrn_reflns_theta_min         3.038
_exptl_absorpt_coefficient_mu    0.099
_exptl_absorpt_correction_T_max  0.985
_exptl_absorpt_correction_T_min  0.981
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.370
_exptl_crystal_density_meas      1.370
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             528.0
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.476
_refine_diff_density_min         -0.422
_refine_diff_density_rms         0.106
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.956
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     172
_refine_ls_number_reflns         3061
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.956
_refine_ls_R_factor_all          0.0754
_refine_ls_R_factor_gt           0.0565
_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^)+(0.1000P)^2^+0.6905P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1470
_refine_ls_wR_factor_ref         0.1677
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2418
_reflns_number_total             3064
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ob01345h2.cif
_cod_data_source_block           vj2_0ma_a_a
_cod_depositor_comments
'Adding full bibliography for 7157076--7157078.cif.'
_cod_database_code               7157077
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              84455