13080-43-8Relevant articles and documents
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Harfenist,Baltzly
, p. 362 (1947)
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An extremely efficient and green method for the acylation of secondary alcohols, phenols and naphthols with a deep eutectic solvent as the catalyst
Nguyen, Hai Truong,Tran, Phuong Hoang
, p. 98365 - 98368 (2016/10/31)
The typical deep eutectic solvent [CholineCl][ZnCl2]3, easily prepared from choline chloride and zinc chloride, is green and useful for the acylation of secondary alcohols, phenols, and naphthols with acid anhydrides. Its efficiency allows the acylation of sterically hindered secondary alcohols and acid anhydrides to proceed in high yield under mild condition. The catalyst is cheap, easy to handle, conveniently synthesized in a single step, and recyclable for several times without significant loss of catalytic activity.
Asymmetric cycloadditions of o-quinone methides employing chiral ammonium fluoride precatalysts
Alden-Danforth, Ethan,Scerba, Michael T.,Lectka, Thomas
supporting information; experimental part, p. 4951 - 4953 (2009/05/31)
(Chemical Equation Presented) The catalytic, enantioselective, [4+2] cycloaddition reaction of ortho-quinone methides with silyl ketene acetals is described. This mechanistically interesting reaction, initiated by a chiral cinchona alkaloid-derived ammonium fluoride "precatalyst" complex, affords a variety of alkyl- and aryl-substituted 3,4-dihydrocoumarin products in excellent yield and with good enantioselectivity.