DMAP mediated one-pot domino thienannulation: a versatile, regioselective and green mechanochemical route to naphtho[2,3-b]thiophenes
Shukla, Gaurav; Verma, Girijesh Kumar; Nagaraju, Anugula; Verma, Rajiv Kumar; Raghuvanshi, Keshav; Singh, Maya Shankar; RSC Advances 3 (2013) 13811–; doi:10.1039/c3ra41100a

data_7239015
_publ_section_title
;
 DMAP mediated one-pot domino thienannulation: a versatile, regioselective
 and green mechanochemical route to naphtho[2,3-b]thiophenes
;
_journal_issue                   33
_journal_name_full               'RSC Advances'
_journal_page_first              13811
_journal_paper_doi               10.1039/c3ra41100a
_journal_volume                  3
_journal_year                    2013
_chemical_formula_sum            'C18 H10 O3 S3'
_chemical_formula_weight         370.46
_chemical_melting_point          215
_chemical_name_common            naphtho[b]thiophene
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                97.900(5)
_cell_angle_beta                 92.639(5)
_cell_angle_gamma                113.007(5)
_cell_formula_units_Z            2
_cell_length_a                   8.245(5)
_cell_length_b                   8.504(5)
_cell_length_c                   12.515(5)
_cell_measurement_temperature    293(2)
_cell_volume                     795.2(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.853
_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  0.0167
_diffrn_reflns_av_sigmaI/netI    0.0335
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            5744
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.95
_diffrn_reflns_theta_min         3.28
_exptl_absorpt_coefficient_mu    0.480
_exptl_crystal_density_diffrn    1.547
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             324
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.370
_refine_diff_density_min         -0.388
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     265
_refine_ls_number_reflns         3594
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0597
_refine_ls_R_factor_gt           0.0439
_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^)+(0.0664P)^2^+0.2506P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1173
_refine_ls_wR_factor_ref         0.1285
_reflns_number_gt                2775
_reflns_number_total             3594
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c3ra41100a.txt
_cod_data_source_block           thiophene-1
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7239015