Enantioselectivity switch in asymmetric Michael addition reactions using phosphonium salts.
Fang, Guosheng; Wang, Hongyu; Zheng, Changwu; Pan, Lu; Zhao, Gang; Organic & biomolecular chemistry 19 (2021) 6334–6340; doi:10.1039/d1ob01027a

data_7158164
_publ_section_title
;
 Enantioselectivity switch in asymmetric Michael addition reactions using
 phosphonium salts.
;
_journal_issue                   28
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              6334
_journal_page_last               6340
_journal_paper_doi               10.1039/d1ob01027a
_journal_volume                  19
_journal_year                    2021
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;
2019-02-14 deposited with the CCDC.	2021-06-28 downloaded from the CCDC.
;
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;
;
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; 
 Flack x determined using 837 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons and Flack (2004), Acta Cryst. A60, s61). 
;
_refine_ls_abs_structure_Flack   0.023(8)
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_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
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'w=1/[\s^2^(Fo^2^)+(0.0577P)^2^] where P=(Fo^2^+2Fc^2^)/3'
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_cod_depositor_comments
'Adding full bibliography for 7158164--7158165.cif.'
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               7158164
_shelx_estimated_absorpt_t_min   0.750
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_shelx_res_checksum              77482
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