Stereospecific alkylation of substituted adenines by the Mitsunobu coupling reaction under microwave-assisted conditions
García-Rubiño, M. E.; Núñez-Carretero, M. C.; Choquesillo-Lazarte, D.; García-Ruiz, J. M.; Madrid, Yolanda; Campos, J. M.; RSC Adv. 4 (2014) 22425–; doi:10.1039/C4RA01968G

data_7235595
_publ_section_title
;
 Stereospecific alkylation of substituted adenines by the Mitsunobu
 coupling reaction under microwave-assisted conditions
;
_journal_issue                   43
_journal_name_full               'RSC Adv.'
_journal_page_first              22425
_journal_paper_doi               10.1039/C4RA01968G
_journal_volume                  4
_journal_year                    2014
_chemical_formula_sum            'C15 H14 Cl N5 O S'
_chemical_formula_weight         347.82
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.0547(4)
_cell_length_b                   13.3237(10)
_cell_length_c                   23.2593(18)
_cell_measurement_reflns_used    7646
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      64.608
_cell_measurement_theta_min      3.801
_cell_volume                     1566.5(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker X8 Proteum'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'graded multilayer optics'
_diffrn_radiation_source         'fine-focus rotating anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0763
_diffrn_reflns_av_sigmaI/netI    0.0424
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            19523
_diffrn_reflns_theta_full        66.41
_diffrn_reflns_theta_max         66.41
_diffrn_reflns_theta_min         3.80
_exptl_absorpt_coefficient_mu    3.508
_exptl_absorpt_correction_T_max  0.7667
_exptl_absorpt_correction_T_min  0.7205
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS, 2010'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.475
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.215
_refine_diff_density_min         -0.310
_refine_diff_density_rms         0.062
_refine_ls_abs_structure_details
'Flack H D (1983), Acta Cryst. A39, 876-881, 1098 Friedel pairs'
_refine_ls_abs_structure_Flack   0.00(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.098
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         2706
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.098
_refine_ls_R_factor_all          0.0627
_refine_ls_R_factor_gt           0.0506
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0657P)^2^+0.8607P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1236
_refine_ls_wR_factor_ref         0.1349
_reflns_number_gt                2259
_reflns_number_total             2706
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ra01968g2.cif
_cod_data_source_block           megr88
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'MULTI-SCAN' was
changed to 'multi-scan' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7235595