Short synthesis of alkyl-substituted acenes using carbonyl-directed C-h and C-o functionalization.
Matsumura, Daiki; Kitazawa, Kentaroh; Terai, Seiya; Kochi, Takuya; Ie, Yutaka; Nitani, Masashi; Aso, Yoshio; Kakiuchi, Fumitoshi; Organic letters 14 (2012) 3882–3885; doi:10.1021/ol301608m

data_1508308
_publ_section_title
;
 Short synthesis of alkyl-substituted acenes using carbonyl-directed C-h
 and C-o functionalization.
;
_journal_issue                   15
_journal_name_full               'Organic letters'
_journal_page_first              3882
_journal_page_last               3885
_journal_paper_doi               10.1021/ol301608m
_journal_volume                  14
_journal_year                    2012
_chemical_formula_sum            'C40.4 H44.8 Cl0.8 O2'
_chemical_formula_weight         590.72
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_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                70.958(3)
_cell_angle_beta                 78.593(3)
_cell_angle_gamma                85.754(2)
_cell_formula_units_Z            2
_cell_length_a                   6.2191(5)
_cell_length_b                   14.7673(11)
_cell_length_c                   19.2467(17)
_cell_measurement_temperature    93(2)
_cell_volume                     1637.8(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      93(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0457
_diffrn_reflns_av_sigmaI/netI    0.0718
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            12613
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.07
_exptl_absorpt_coefficient_mu    0.134
_exptl_absorpt_correction_T_max  0.9736
_exptl_absorpt_correction_T_min  0.9359
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Jacobson, R. (1998). Private communication to the Rigaku Corporation'
_exptl_crystal_density_diffrn    1.198
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             634
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.425
_refine_diff_density_min         -0.401
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.112
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     416
_refine_ls_number_reflns         5715
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.120
_refine_ls_R_factor_all          0.1189
_refine_ls_R_factor_gt           0.0627
_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^)+(0.1028P)^2^+1.1093P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1679
_refine_ls_wR_factor_ref         0.2316
_reflns_number_gt                3238
_reflns_number_total             5715
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol301608m_si_002.cif
_cod_data_source_block           11f
_cod_depositor_comments
;
The following automatic conversions were performed:
'_atom_site_symetry_multiplicity' tag replaced with
'_atom_site_symmetry_multiplicity'.

Automatic conversion script
Id: cif_correct_tags 1440 2010-10-19 06:21:57Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P-1
_cod_original_formula_sum        'C40.40 H44.80 Cl0.80 O2'
_cod_database_code               1508308