One-pot synthesis of ortho -acylphenols by palladium-catalyzed phenol C–H addition to nitriles
作者:Tao-Shan Jiang、Bei Gan、Xi Wang、Xiuli Zhang
DOI:10.1016/j.tetlet.2017.09.062
日期:2017.11
The regioselective one-pot synthesis of ortho-acylphenols via the palladium-catalyzedaddition of phenols to nitriles and subsequent hydrolysis is reported. The acylation reaction proceeded smoothly using the Pd(OAc)2/DMSO system and TFA as the additive. This method also provides a direct strategy for the synthesis of a salicylketoxime scaffold.
Eco-friendly organocatalyst- and reagent-controlled selective construction of diverse and multifunctionalized 2-hydroxybenzophenone frameworks for potent UV-A/B filters by cascade benzannulation
作者:Muhammad Saeed Akhtar、Raju S. Thombal、Ramuel John Inductivo Tamargo、Won-Guen Yang、Sung Hong Kim、Yong Rok Lee
DOI:10.1039/d0gc01011a
日期:——
2-hydroxy-3′-formylbenzophenones and [4 + 2] cycloaddition for 2-hydroxybenzophenones. With this methodology, an unprecedented double benzannulation allows one-pot construction of diverse 7-(2′-hydroxybenzoyl)-2-naphthaldehydes via [3 + 3 + 4] cycloaddition. This protocol features a broad substrate scope, high functional-group tolerance, and operational simplicity in an environmentally benign green solvent
Synthesis of Aliphatic Hydroxyaryl Ketones or (Hetero)aryl Hydroxyaryl Ketones by Acylation of Organometallic Reagents
作者:Alan Katritzky、Khanh Le、Prabhu Mohapatra
DOI:10.1055/s-2007-990786
日期:2007.10
Diverse hydroxyarenecarboxylic acids afford stable N-(hydroxyaroyl)benzotriazoles that react with heteroaryl, alkyl, and aryl Grignard or lithium reagents to give the corresponding hydroxyaryl ketones in 51-94% yields.
First direct access to 2-hydroxybenzophenones via nickel-catalyzed cross-coupling of 2-hydroxybenzaldehydes with aryl iodides
作者:N. Nowrouzi、M. Zarei、F. Roozbin
DOI:10.1039/c5ra18890c
日期:——
The Nickel-catalyzed cross-coupling of 2-hydroxybenzaldehydes with aryl iodides proceeds in ethylene glycol to give the corresponding 2-hydroxybenzophenones.
2-羟基苯甲醛与芳基碘化物在乙二醇中进行镍催化的交叉偶联反应,得到相应的2-羟基苯并酮。
Trisubstituted phenyl derivatives having retinoid agonist, antagonist or inverse agonist type biological activity
申请人:Allergan Sales, Inc.
公开号:US06235923B1
公开(公告)日:2001-05-22
Compounds of the formula
where the symbols have the meaning defined in the specification, have retinoid, retinois antagonist or retinoid inverse agonist type biological activity.