Search results
Results from the WOW.Com Content Network
Gutmann, a chemist renowned for his work on non-aqueous solvents, described an acceptor-number scale for solvent Lewis acidity [4] with two reference points relating to the 31 P NMR chemical shift of Et 3 PO in the weakly Lewis acidic solvent hexane (δ = 41.0 ppm, AN 0) and in the strongly Lewis acidic solvent SbCl 5 (δ = 86.1 ppm, AN 100).
The ensuing reaction results in the cleavage of the ether or the ester into an alkyl iodide and respectively an alcohol or a carboxylic acid. Zeisel determination By heating this mixture, the gases are allowed to come into contact with a piece of paper higher up the test tube saturated with silver nitrate .
A group of plaintiffs then sued in the United States, and, on 5 November 2007, a Los Angeles jury awarded them $3.2 million. Dole and Dow vowed to appeal the decision. [ 36 ] On 23 April 2009 a Los Angeles judge threw out two cases against Dole and Dow due to fraud and extortion by lawyers in Nicaragua recruiting fraudulent plaintiffs to make ...
Triphenylmethanol features three phenyl (Ph) rings and an alcohol group bound to a central tetrahedral carbon atom. All three C–Ph bonds are typical of sp 3-sp 2 carbon-carbon bonds with lengths of approximately 1.47 Å, while the C–O bond length is approximately 1.42 Å.
It can be produced by a Friedel-Crafts alkylation between 1-chlorohexane and benzene., [1] or by the reaction of benzene and 1-hexene with various acid catalysts such as antimony pentafluoride, [2] scandium(III) triflate, [3] and phosphoric acid.
Reagent testing is one of the processes used to identify substances contained within a pill, usually illicit substances. With the increased prevalence of drugs being available in their pure forms, the terms "drug checking" or "pill testing" [1] may also be used, although these terms usually refer to testing with a wider variety of techniques covered by drug checking.
3-Ethylpentane (C 7 H 16) is a branched saturated hydrocarbon. It is an alkane, and one of the many structural isomers of heptane, consisting of a five carbon chain with a two carbon branch at the middle carbon. An example of an alcohol derived from 3-ethylpentane is the tertiary alcohol 3-ethylpentan-3-ol. [3]
3 C 6 H 6 + CHCl 3 → Ph 3 CH + 3 HCl. Alternatively, benzene may react with carbon tetrachloride using the same catalyst to obtain the triphenylmethyl chloride–aluminium chloride adduct which is then treated with diethyl ether for 24 hours at room temperature and hydrolyzed with concentrated hydrochloric acid: [3] 3 C 6 H 6 + CCl 4 + AlCl 3 ...