Intramolecular dipolar cycloaddition reaction of 5H,7H-thiazolo[3,4-c]oxazol-4-ium-1-olates: synthesis of chiral 1H-pyrrolo[1,2-c]thiazole derivatives
M. V. D. Pinho e Melo, Teresa; M. Barbosa, Dália; J. R. S. Ramos, Paulo; M. d’A. Rocha Gonsalves, António; L. Gilchrist, Thomas; M. Beja, Ana; A. Paixão, José; R. Silva, Manuela; Alte da Veiga, Luiz; Journal of the Chemical Society, Perkin Transactions 1  (1999) 1219–; doi:10.1039/a807678b

data_7212967
_publ_section_title
;
 Intramolecular dipolar cycloaddition reaction of
 5H,7H-thiazolo[3,4-c]oxazol-4-ium-1-olates: synthesis of chiral
 1H-pyrrolo[1,2-c]thiazole derivatives
;
_journal_issue                   9
_journal_name_full
'Journal of the Chemical Society, Perkin Transactions 1'
_journal_page_first              1219
_journal_paper_doi               10.1039/a807678b
_journal_year                    1999
_chemical_formula_moiety         'C14 H13 N O S'
_chemical_formula_sum            'C14 H13 N O S'
_chemical_formula_weight         243.31
_chemical_name_systematic
; 
 (3R)-3-Phenyl-3,4,6,8-tetrahydro-1H-furo[3,4-b]pyrrole[1,2-6]thiazole 
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_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                 103.69(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.556(3)
_cell_length_b                   6.038(2)
_cell_length_c                   9.994(4)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      14.4
_cell_measurement_theta_min      10.5
_cell_volume                     560.3(3)
_computing_cell_refinement       'CAD-4 Software (Enraf-Nonius)'
_computing_data_collection       'CAD-4 Software (Enraf-Nonius)'
_computing_data_reduction        'Enraf-Nonius SDP+ 3.0 (Frenz, 1985)'
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.940
_diffrn_measured_fraction_theta_max 0.940
_diffrn_measurement_device_type  'CAD4 Enraf-Nonius'
_diffrn_measurement_method       'profile from \w-2\q scans'
_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  0.0159
_diffrn_reflns_av_sigmaI/netI    0.0144
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            4233
_diffrn_reflns_theta_full        25.92
_diffrn_reflns_theta_max         25.92
_diffrn_reflns_theta_min         3.38
_diffrn_standards_decay_%        2.0
_diffrn_standards_interval_count 180
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.269
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            'translucent yellow/orange'
_exptl_crystal_density_diffrn    1.442
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             256
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.145
_refine_diff_density_min         -0.143
_refine_diff_density_rms         0.026
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.11(7)
_refine_ls_extinction_coef       0.024(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     155
_refine_ls_number_reflns         2046
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0264
_refine_ls_R_factor_gt           0.0254
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0377P)^2^+0.0963P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0687
_refine_ls_wR_factor_ref         0.0694
_reflns_number_gt                1992
_reflns_number_total             2046
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            807678bsup1.cif
_cod_data_source_block           dmb
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0377P)^2^+0.0963P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0377P)^2^+0.0963P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      P21
_cod_database_code               7212967