An intramolecular [2 + 2] photocycloaddition approach to conformationally restricted bis-pyrrolidines.
Fort, Diego A.; Woltering, Thomas J.; Alker, André M; Bach, Thorsten; The Journal of organic chemistry 79 (2014) 7152–7161; doi:10.1021/jo501302f

data_4029814
_publ_section_title
;
 An intramolecular [2 + 2] photocycloaddition approach to conformationally
 restricted bis-pyrrolidines.
;
_journal_issue                   15
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              7152
_journal_page_last               7161
_journal_paper_doi               10.1021/jo501302f
_journal_volume                  79
_journal_year                    2014
_chemical_absolute_configuration unk
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 ? 
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CrysAlisPro, Agilent Technologies,
Version 1.171.36.24 (release 03-12-2012 CrysAlis171 .NET)
(compiled Dec  3 2012,18:21:49)
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CrysAlisPro, Agilent Technologies,
Version 1.171.36.24 (release 03-12-2012 CrysAlis171 .NET)
(compiled Dec  3 2012,18:21:49)
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CrysAlisPro, Agilent Technologies,
Version 1.171.36.24 (release 03-12-2012 CrysAlis171 .NET)
(compiled Dec  3 2012,18:21:49)
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_computing_molecular_graphics    XSHELL
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'Goniometer Xcalibur, detector: Ruby (Gemini ultra Cu)'
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CrysAlisPro, Agilent Technologies,
Version 1.171.36.24 (release 03-12-2012 CrysAlis171 .NET)
(compiled Dec  3 2012,18:21:49)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
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_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.454
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             904
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_refine_diff_density_min         -0.716
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_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
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_refine_ls_extinction_coef       0.0035(6)
_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   1.210
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_refine_ls_number_parameters     262
_refine_ls_number_reflns         2824
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.210
_refine_ls_R_factor_all          0.0488
_refine_ls_R_factor_gt           0.0475
_refine_ls_shift/su_max          0.014
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0910P)^2^+1.1900P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1458
_refine_ls_wR_factor_ref         0.1475
_reflns_number_gt                2733
_reflns_number_total             2824
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo501302f_si_003.cif
_cod_data_source_block           x2844_cu
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

 Adding full bibliography for 4029813--4029815.cif.
;
_cod_original_sg_symbol_H-M      'P2(1)2(1)2(1) '
_cod_database_code               4029814