methyl benzoate वाक्य
उदाहरण वाक्य
मोबाइल
- The aroma is due to the ester methyl benzoate and related compounds that exist in the fruit.
- The enantiomers are separated by chiral resolution in reaction with methyl benzoate, selective crystallisation followed by hydrolysis.
- First we form phenylmagnesium bromide in ether in situ, then react it with methyl benzoate ( in more ether ).
- Nitrotoluene, methyl benzoate and benzoic acid are nitrated by prolonged exposure over a few days . Benzonitrile does not react.
- Methyl benzoate has a pleasant smell, strongly reminiscent of the fruit of the feijoa tree, and it is used in perfumery.
- Cocaine hydrochloride hydrolyzes in moist air to give methyl benzoate; drug-sniffing dogs are thus trained to detect the smell of methyl benzoate.
- Cocaine hydrochloride hydrolyzes in moist air to give methyl benzoate; drug-sniffing dogs are thus trained to detect the smell of methyl benzoate.
- Scientific research establishes that instead of smelling cocaine, drug-detection dogs alert to methyl benzoate an odor shared by snapdragons, petunias, perfumes and food additives.
- For example, in a study involving acetophenones this oxygen was preferentially inserted in-between the carbonyl and the aromatic ring to give acetyl aromatic esters, not methyl benzoates.
- Single synthetic compounds are commonly used as bait to attract and collect males for study, and include many familiar flavorings and odors considered appealing to humans ( e . g ., methyl salicylate, eugenol, cineole, benzyl acetate, methyl benzoate, methyl cinnamate ), and others which are not ( e . g ., skatole ).
- Proof-of-concept work has been done with microfluidics, in which continuous point-of-use synthesis from N-methyl-N-nitrosourea and 0.93M potassium hydroxide in water was followed by point-of-use conversion with benzoic acid, resulting in a 65 % yield of the methyl benzoate ester within seconds at temperatures ranging from 0-50 C . The yield was better than under capillary conditions; the microfluidics were credited with " suppression of hot spots, low holdup, isothermal conditions, and intensive mixing ."
- Secondly, I notice there isn't a lot in this workup that separates methyl benzoate and bromobenzene from the product . . . is it reasonable that they all get consumed to near completion ( I had an MP depression of about 5 C ); their BPs are really high but the product is a solid; maybe bromobenzene and methyl benzoate form an azeotrope that can be evaporated easily . . . ? ( But on a totally different scale than evaporating ether . ) Would acid-catalysed hydrolysis of the starting reagent into methanol and benzoic acid help significantly ? talk ) 04 : 22, 20 October 2009 ( UTC)
- Secondly, I notice there isn't a lot in this workup that separates methyl benzoate and bromobenzene from the product . . . is it reasonable that they all get consumed to near completion ( I had an MP depression of about 5 C ); their BPs are really high but the product is a solid; maybe bromobenzene and methyl benzoate form an azeotrope that can be evaporated easily . . . ? ( But on a totally different scale than evaporating ether . ) Would acid-catalysed hydrolysis of the starting reagent into methanol and benzoic acid help significantly ? talk ) 04 : 22, 20 October 2009 ( UTC)
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