Divergent synthesis from reactions of 2-trifluoromethyl-1,3-conjugated enynes with N-acetylated 2-aminomalonates.
Yang, Jieru; Zhou, Xiaofan; Zeng, Yu; Huang, Chaoqian; Xiao, Yuanjing; Zhang, Junliang; Organic & biomolecular chemistry 15 (2017) 2253–2258; doi:10.1039/c6ob02749k

data_7155552
_publ_section_title
;
 Divergent synthesis from reactions of 2-trifluoromethyl-1,3-conjugated
 enynes with N-acetylated 2-aminomalonates.
;
_journal_issue                   10
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              2253
_journal_page_last               2258
_journal_paper_doi               10.1039/c6ob02749k
_journal_volume                  15
_journal_year                    2017
_chemical_formula_sum            'C20 H21 F2 N O5'
_chemical_formula_weight         393.38
_chemical_name_systematic
'diethyl 2-acetamido-2-(2-(difluoromethylene)-4-phenylbut-3-yn-1-yl)malonate'
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2016-03-13 deposited with the CCDC.
2017-02-27 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 113.580(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.7953(10)
_cell_length_b                   21.8368(19)
_cell_length_c                   9.4439(8)
_cell_measurement_temperature    173(2)
_cell_volume                     2040.4(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0544
_diffrn_reflns_av_sigmaI/netI    0.0426
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            18996
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         1.87
_exptl_absorpt_coefficient_mu    0.104
_exptl_absorpt_correction_T_max  0.9836
_exptl_absorpt_correction_T_min  0.9481
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.281
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             824
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent'
_exptl_crystal_size_max          0.52
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.395
_refine_diff_density_min         -0.274
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         3587
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0788
_refine_ls_R_factor_gt           0.0449
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0549P)^2^+0.8494P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1094
_refine_ls_wR_factor_ref         0.1313
_reflns_number_gt                2389
_reflns_number_total             3587
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6ob02749k2.cif
_cod_data_source_block           z
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/data/users/saulius/crontab/automatic-downloads/current/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7155552
_solvent_exptl_crystal_recrystallization_method DCM/Hexane