Two unprecedented multicomponent reactions involving N-heterocyclic carbenes, activated acetylenes, and aldehydes.
Nair, Vijay; Sreekumar, V.; Bindu, S.; Suresh, Eringathodi; Organic letters 7 (2005) 2297–2300; doi:10.1021/ol0502782

data_1506552
_publ_section_title
;
 Two unprecedented multicomponent reactions involving N-heterocyclic
 carbenes, activated acetylenes, and aldehydes.
;
_journal_issue                   12
_journal_name_full               'Organic letters'
_journal_page_first              2297
_journal_page_last               2300
_journal_paper_doi               10.1021/ol0502782
_journal_volume                  7
_journal_year                    2005
_chemical_formula_sum            'C30 H38 F N2 O9'
_chemical_formula_weight         589.62
_chemical_name_systematic
; 
 ? 
;
_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                 101.640(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.2322(15)
_cell_length_b                   17.385(3)
_cell_length_c                   9.8198(16)
_cell_measurement_temperature    273(2)
_cell_volume                     1543.7(4)
_computing_cell_refinement       'BRUKER SMART'
_computing_data_collection       'BRUKER SMART'
_computing_data_reduction        'BRUKER SAINT'
_computing_molecular_graphics    ORTEP
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'BRUKER SMART APEX CCD DIFFRACTOMETER'
_diffrn_measurement_method       'OMEGA-PHI SCAN'
_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  0.0202
_diffrn_reflns_av_sigmaI/netI    0.0349
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            7569
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         2.12
_exptl_absorpt_coefficient_mu    0.097
_exptl_crystal_colour            'WINE RED'
_exptl_crystal_density_diffrn    1.269
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       PLATES
_exptl_crystal_F_000             626
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.217
_refine_diff_density_min         -0.376
_refine_diff_density_rms         0.057
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.1(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.073
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     389
_refine_ls_number_reflns         4926
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.073
_refine_ls_R_factor_all          0.0528
_refine_ls_R_factor_gt           0.0472
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0945P)^2^+0.0680P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1310
_refine_ls_wR_factor_ref         0.1439
_reflns_number_gt                4415
_reflns_number_total             4926
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol0502782si20050409_084456.cif
_cod_data_source_block           vijay5nf(SK-II-47)
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0945P)^2^+0.0680P] 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^)+(0.0945P)^2^+0.0680P] 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      'P 21'
_cod_database_code               1506552