Directing Group Assisted Nucleophilic Substitution of Propargylic Alcohols via o-Quinone Methide Intermediates: Brønsted Acid Catalyzed, Highly Enantio- and Diastereoselective Synthesis of 7-Alkynyl-12a-acetamido-Substituted Benzoxanthenes.
Saha, Satyajit; Schneider, Christoph; Organic letters 17 (2015) 648–651; doi:10.1021/ol503662g

data_1518773
_publ_section_title
;
 Directing Group Assisted Nucleophilic Substitution of Propargylic
 Alcohols via o-Quinone Methide Intermediates: Br\/onsted Acid Catalyzed,
 Highly Enantio- and Diastereoselective Synthesis of
 7-Alkynyl-12a-acetamido-Substituted Benzoxanthenes.
;
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 L. J. Farrugia, J. Appl. Crystallogr. 1997, 30, 565.
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 G. M. Sheldrick, Instit\"ut f\"ur Anorganische Chemie der Universit\"at,
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 G. M. Sheldrick, Acta. Cryst., 2008, A64, 112 - 122
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        CrysAlisPro, Agilent Technologies,
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        Empirical absorption correction using spherical harmonics,
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        Empirical absorption correction using spherical harmonics,
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 Flack x determined using 1893 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
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