Phosphoric Acid-Catalyzed Formation of Hydrogen-Bonded ortho-Quinone Methides. Enantioselective Cycloaddition with β-Dicarbonyl Compounds toward Benzannulated Oxygen Heterocycles.
Göricke, Fabian; Haseloff, Stefan; Laue, Michael; Schneider, Maximilian; Brumme, Thomas; Schneider, Christoph; The Journal of organic chemistry  (2020) –; doi:10.1021/acs.joc.0c01375

data_4038717
_publ_section_title
;
 Phosphoric Acid-Catalyzed Formation of Hydrogen-Bonded ortho-Quinone
 Methides. Enantioselective Cycloaddition with \b-Dicarbonyl Compounds
 toward Benzannulated Oxygen Heterocycles.
;
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 L. J. Farrugia, J. Appl. Crystallogr. 1997, 30, 565.
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 L.J. Farrugia,
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 G. M. Sheldrick, Acta. Cryst., 2008, A64, 112 - 122
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'w=1/[\s^2^(Fo^2^)+(0.0283P)^2^+0.4395P] where P=(Fo^2^+2Fc^2^)/3'
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