A Practical Iodination of Aromatic Compounds by Using Iodine and Iodic Acid
作者:Avinash T. Shinde、Sainath B. Zangade、Shivaji B. Chavan、Archana Y. Vibhute、Yogesh S. Nalwar、Yeshwant B. Vibhute
DOI:10.1080/00397910903457332
日期:2010.11.3
This article describes simple and efficient method for the iodination of different aromatic amines, hydroxy aromatic aldehydes, hydroxy acetophenones and phenols usingiodine and iodic acid in ethanol as a solvent. Notable advantages include mild reaction condition, no need of catalyst, short reaction time, simple practical procedure, giving excellent yield of the product.
Reductive Cleavage of Aryl <i>O-</i>Carbamates to Phenols by the Schwartz Reagent. Expedient Link to the Directed <i>Ortho</i> Metalation Strategy
作者:Justin Morin、Yigang Zhao、Victor Snieckus
DOI:10.1021/ol401547d
日期:2013.8.16
efficient method for the reductive cleavage of aryl O-carbamates to phenols, 1 → 2 using the Schwartz reagent is reported. The method is selective, tolerating a large number of functional groups; may be carried out by direct or by an economical in situ procedure; and, notably, establishes a synthetic connection to the directedorthometalationstrategy (Figure 1) allowing new entries into difficult to
Oral care compositions with color changing indicator
申请人:Sabnis W. Ram
公开号:US20060222601A1
公开(公告)日:2006-10-05
The invention describes color changing toothpastes and mouthwashes which contains acid-base indicator(s) for interaction with the oral cavity to provide a color change indicative of treatment time.
这项发明描述了含有酸碱指示剂的变色牙膏和漱口水,用于与口腔相互作用,以提供治疗时间的颜色变化指示。
Isoquinolinium Dichromate and Chlorochromate as Efficient Catalysts for Oxidative Halogenation of Aromatic Compounds Under Acid-Free Conditions
作者:A. Sambashiva Rao、K. C. Rajanna、K. Rajendar Reddy、Subhash Kulkarni
DOI:10.1080/15533174.2014.989596
日期:2016.6.2
Isoquinolinium dichromate and isoquinolinium chlorochromate were found as efficient catalysts to trigger oxidative bromination and iodination of aromatic hydrocarbons with KBr/KI and KHSO4 under acid-free conditions. Reaction times reduced highly significantly under sonication, followed by corresponding mono bromo derivatives in very good yield with high regioselectivity.
Ultrasonically Assisted Halogenation of Aromatic Compounds using Isoquinolinium Bound Hypervalent Chromium and Tetrabutylammonium Halides in PEG-600 Solutions under Acid Free and Solvent-Free Conditions
undergo halogenation in the presence of halogens (molecular chlorine or bromine) even in the absence of Lewisacids to give halogenated products [3]. On the other hand, brominating mixture (a mixture of KBr and Ultrasonically Assisted Halogenation of Aromatic Compounds using Isoquinolinium Bound Hypervalent Chromium and Tetrabutylammonium Halides in PEG-600 Solutions under Acid Free and Solvent-Free Conditions†