vinyl ether sentence in Hindi
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- An appropriate aliquot of the sample is pipetted directly into the titration vessel, and isobutyl vinyl ether and toluene solvent are added.
- Vinyl Ether is a rather unstable compound which with exposure to light or acid fumes decomposes to acetaldehyde and polymerizes into a glassy solid.
- Induction causes little coughing however produces increased salivation . ( Finer, 1965 ) During anesthesia vinyl ether can cause some patients to twitch.
- This invitation was accepted; in 1933 Samuel Gelfan and Irving Bell of the University of Alberta published the first human trials of vinyl ether.
- Aggravated by the issue of potentially toxic degradation over long-term storage and possible hepatic toxicity, vinyl ether began to leave the operating theater.
- Vinyl ether had some success but its usage was limited by aforementioned concerns of liver toxicity and degradation upon long term storage . ( Mazurek, 2007)
- It is prone to polymerization, leading to formation of poly ( methyl vinyl ether ) ( PMVE, CAS : 9003-09-2 ).
- In practice, vinyl ether proved to have favorable properties that allowed its brief usage as an anesthetic; on the other hand, it left many unimpressed.
- An example of Claisen rearrangement is the [ 3, 3 ] rearrangement of an allyl vinyl ether, which upon heating yields a ?, ?-unsaturated carbonyl.
- Using samples received from Princeton, in 1930, Leake and fellow researcher Mei-Yu Chen published a brief study characterizing the anesthetic effects of vinyl ether upon mice.
- Nitroethylene can initially react with a chiral vinyl ether, and then react in a [ 3 + 2 ] cycloaddition with an electron deficient alkene such as dimethyl fumarate.
- Today, vinyl ether is a relic in the field of anesthesiology; however, the analytical techniques used to study its pharmacology laid the groundwork for the testing of new anesthetic agents.
- In 1899, Knorr and Matthes attempted a synthesis of vinyl ether by exhaustive methylation of morpholine . ( Major, 1935 ) They attained such a small quantity of product that no characterization was possible.
- Other ethers like methyl propyl ether and vinyl ether are also anesthetics, but they wouldn't be called simply " ether " . talk ) 16 : 35, 12 August 2008 ( UTC)
- In an attempt to circumvent the toxicity of vinyl ether while maintaining its favorable properties it was mixed 1 : 4 with ethyl ether producing Vinethene Anesthetic Mixture ( V . A . M . ).
- The Wittig reaction generates the allyl vinyl ether intermediate that further participates in a Claisen rearrangement to generate the final ?, ?-unsaturated ketone or aldehyde product ( Figure " Modified Wittig-Claisen tandem reactions " ).
- Vinyl Ether rapidly decolorizes a solution of bromine in carbon tetrachloride; it is also rapidly oxidized by aqueous potassium permanganate; sulfuric acid reacts with vinyl ether producing a black tarry resin and some acetaldehyde . ( Major, 1935)
- Vinyl Ether rapidly decolorizes a solution of bromine in carbon tetrachloride; it is also rapidly oxidized by aqueous potassium permanganate; sulfuric acid reacts with vinyl ether producing a black tarry resin and some acetaldehyde . ( Major, 1935)
- "' Methyl vinyl ether "'is an organic compound with the chemical formula C 3 H 6 O . It is the simplest chemical that contains both an alkene group and an alkyl group with an ether linkage.
- Much to the dismay of some pharmacologists, the synthesis and isolation of pure vinyl ether proved to be a difficult challenge for chemists; vinyl ether was suspected to be a nearly ideal anesthetic as its structure was the combination of an alkene and an ether.
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