Direct Synthesis of Butadiynyl-Substituted Pyrroles under Solvent- and Transition Metal-Free Conditions. The First Formal Inverse Sonogashira Coupling for 1-Halobutadiynes
Tomilin, Denis; Pigulski, Bartłomiej; Gulia, Nurbey; Arendt, Agata; Sobenina, Luybov; Mikhaleva, Al'bina; Szafert, Slawomir; Trofimov, Boris; RSC Adv.  (2015) –; doi:10.1039/C5RA08820H

data_7221815
_publ_section_title
;
 Direct Synthesis of Butadiynyl-Substituted Pyrroles under Solvent- and
 Transition Metal-Free Conditions. The First Formal Inverse Sonogashira
 Coupling for 1-Halobutadiynes
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C5RA08820H
_journal_year                    2015
_chemical_formula_moiety         'C14 H13 N O2'
_chemical_formula_sum            'C14 H13 N O2'
_chemical_formula_weight         227.25
_chemical_name_systematic
'Methyl 5-(4,5,6,7-tetrahydro-1H-indol-2-yl)penta-2,4-diynoate'
_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   mixed
_audit_creation_method           SHELXL-2014
_audit_update_record
;
2014-12-05 deposited with the CCDC.
2015-08-17 downloaded from the CCDC.
;
_cell_angle_alpha                77.25(3)
_cell_angle_beta                 79.07(3)
_cell_angle_gamma                77.04(3)
_cell_formula_units_Z            2
_cell_length_a                   7.887(3)
_cell_length_b                   8.176(3)
_cell_length_c                   9.930(3)
_cell_measurement_reflns_used    5828
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      36.6020
_cell_measurement_theta_min      3.0323
_cell_volume                     602.0(4)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.33.66 (release 28-04-2010 CrysAlis171 .NET)
(compiled Apr 28 2010,14:27:37)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.33.66 (release 28-04-2010 CrysAlis171 .NET)
(compiled Apr 28 2010,14:27:37)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.33.66 (release 28-04-2010 CrysAlis171 .NET)
(compiled Apr 28 2010,14:27:37)
;
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-2014 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.3359
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.760
_diffrn_measurement_device_type  'Xcalibur, Sapphire2, large Be window'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0259
_diffrn_reflns_av_unetI/netI     0.0308
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.760
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            9521
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.760
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         36.688
_diffrn_reflns_theta_min         3.038
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.254
_exptl_crystal_description       block
_exptl_crystal_F_000             240
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: CH2Cl2/hexane'
_exptl_crystal_size_max          0.600
_exptl_crystal_size_mid          0.310
_exptl_crystal_size_min          0.080
_refine_diff_density_max         0.447
_refine_diff_density_min         -0.372
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     159
_refine_ls_number_reflns         4548
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0656
_refine_ls_R_factor_gt           0.0528
_refine_ls_shift/su_max          0.030
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1009P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1465
_refine_ls_wR_factor_ref         0.1534
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3499
_reflns_number_total             4548
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5ra08820h2.cif
_cod_data_source_block           tom12
_cod_database_code               7221815
_shelx_estimated_absorpt_t_min   0.951
_shelx_estimated_absorpt_t_max   0.993
_shelxl_version_number           2014-3
_shelx_res_checksum              55728