One-Pot Synthesis of 2-Cyano-1,4-diketones: Applications to Synthesis of Cyanosubstituted Furans, Pyrroles, and Dihydropyridazines.
Chan, Chieh-Kai; Chan, Yi-Ling; Tsai, Yu-Lin; Chang, Meng-Yang; The Journal of organic chemistry 81 (2016) 8112–8120; doi:10.1021/acs.joc.6b01672

data_4037183
_publ_section_title
;
 One-Pot Synthesis of 2-Cyano-1,4-diketones: Applications to Synthesis of
 Cyanosubstituted Furans, Pyrroles, and Dihydropyridazines.
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_journal_issue                   17
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              8112
_journal_page_last               8120
_journal_paper_doi               10.1021/acs.joc.6b01672
_journal_volume                  81
_journal_year                    2016
_chemical_formula_sum            'C23 H17 N3'
_chemical_formula_weight         335.39
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/6
_cell_angle_alpha                91.3300(10)
_cell_angle_beta                 101.9210(10)
_cell_angle_gamma                106.7060(10)
_cell_formula_units_Z            4
_cell_length_a                   9.9929(2)
_cell_length_b                   13.6834(3)
_cell_length_c                   14.2187(4)
_cell_measurement_reflns_used    8054
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      26.3057
_cell_measurement_theta_min      2.1827
_cell_volume                     1814.91(8)
_computing_cell_refinement       'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_data_collection       'APEX2 (Bruker AXS, 2010)'
_computing_data_reduction        'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.992
_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  0.0260
_diffrn_reflns_av_unetI/netI     0.0264
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.992
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            27017
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.992
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.385
_diffrn_reflns_theta_min         1.469
_exptl_absorpt_coefficient_mu    0.074
_exptl_absorpt_correction_T_max  0.9485
_exptl_absorpt_correction_T_min  0.9023
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2014/4 (Bruker AXS Inc.)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.227
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Columnar
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.218
_refine_diff_density_min         -0.316
_refine_diff_density_rms         0.089
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.122
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     469
_refine_ls_number_reflns         7367
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.122
_refine_ls_R_factor_all          0.0651
_refine_ls_R_factor_gt           0.0411
_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^)+(0.0801P)^2^+0.0776P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1204
_refine_ls_wR_factor_ref         0.1484
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5374
_reflns_number_total             7367
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo6b01672_si_004.cif
_cod_data_source_block           150530_0m
_cod_depositor_comments
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The following automatic conversions were performed:

data item '_exptl_crystal_density_meas' value 'not measured' was
changed to '?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
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_cod_database_code               4037183
_shelxl_version_number           2014/6
_shelx_res_checksum              38546
_shelx_hkl_checksum              15750