Organocatalytic asymmetric anti-selective Michael reactions of aldehydes and the sequential reduction/lactonization/Pauson-Khand reaction for the enantioselective synthesis of highly functionalized hydropentalenes.
Hong, Bor-Cherng; Dange, Nitin S.; Yen, Po-Jen; Lee, Gene-Hsiang; Liao, Ju-Hsiou; Organic letters 14 (2012) 5346–5349; doi:10.1021/ol302527z

data_1508708
_publ_section_title
;
 Organocatalytic asymmetric anti-selective Michael reactions of aldehydes
 and the sequential reduction/lactonization/Pauson-Khand reaction for the
 enantioselective synthesis of highly functionalized hydropentalenes.
;
_journal_issue                   20
_journal_name_full               'Organic letters'
_journal_page_first              5346
_journal_page_last               5349
_journal_paper_doi               10.1021/ol302527z
_journal_volume                  14
_journal_year                    2012
_chemical_absolute_configuration ad
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_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
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_cell_length_b                   8.8242(11)
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_cell_measurement_temperature    295(2)
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_computing_data_collection       'BRUKER SMART'
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_computing_molecular_graphics    Ortep-3
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_diffrn_ambient_temperature      295(2)
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_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker Smart Apex'
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_diffrn_reflns_theta_full        28.30
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_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.391
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_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             728
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_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
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_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1040P)^2^+0.1260P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_cod_data_source_file            ol302527z_si_002.cif
_cod_data_source_block           nsd0808
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Empirical' changed to
'empirical' 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_cell_volume        1653.8(3)
_cod_original_sg_symbol_Hall     'P 2ac2ab'
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_cod_database_code               1508708