101 results about "Heptanone" patented technology

Provided are methods of forming photolithographic patterns using a negative tone development process. Also provided are coated substrates and electronic devices formed by the methods. The methods find particular applicability in the manufacture of electronic devices. The method includes: (a) providing a substrate comprising over a surface thereof one or more layer to be patterned; (b) applying a layer of a photoresist composition over the one or more layer to be patterned, the photoresist composition comprising a resin comprising an acid cleavable group and an acid generator; (c) patternwise exposing the photoresist composition layer to actinic radiation; and (d) applying a developer to the photoresist composition layer, wherein unexposed portions of the photoresist layer are removed by the developer, leaving a photoresist pattern over the one or more layer to be patterned. The developer comprises 2-heptanone and / or 5-methyl-2-hexanone.

The invention discloses a milk flavor formula. The milk flavor formula mainly comprises the components of propylene glycol, butyric acid, octanoic acid, capric acid, ethyl lactate, vanillin, maltol, delta-decalactone, delta-dodecalactone, gamma-dodecalactone, ethyl butyrate, butanedione, 2-heptanone, a milk-favor reactant and the like. Compared with other milk flavor, the milk flavor prepared by the milk flavor formula has a more natural taste and remarkably increased aroma and smell, enables the stability and the aroma quality to be higher than those of similar domestic flavor, is used as a food additive, is used for increasing taste of end products of foods and beverages, moreover, can bring more natural milk aroma and taste to a product, endows the product with natural taste, and can enable the heat resistance, the aroma quality and the stability of the product to be higher than those other similar domestic products at the same time.

The invention provides a traditional Chinese medicinal effective part for decreasing uric acid as well as a preparation method and application thereof. The traditional Chinese medicinal effective part is total flavone and a diphenylheptane diarylheptanoid obtained by being extracted and separated from alpinia officinarum hance, and is prepared from the following components of 35wt% to 80 wt% of galangin, 5wt% to 14wt% of galangin-3-O-methyl ether, 1wt% to 7wt% of kaempferol-4'-O-methyl ether and 2wt% to 10wt% of 1-phenyl-7-(3'-methoxyl-4'-hydroxyl)-5-ol-3-heptanone; the sum of the components does not exceed 100 percent. The effective part prepared and obtained by the preparation method provided by the invention is definite and is high in purity. According to the whole preparation method, except for ethanol, other organic solvents are not used; the preparation method is environment-friendly and pollution-free. The industrialized mass production is easily realized in the whole production process. In-vitro and in-vivo pharmacodynamic experiments and preliminary clinical experiments all show that an alpinia-officinarum-hance effective part prepared and obtained by the preparation method provided by the invention has an obvious uric acid decreasing effect. The traditional Chinese medicinal effective part has a quite good effect on a patient suffering from hyperuricemia or gout.

The invention provides brown sugar essence for food and a preparation method of the brown sugar essence. The brown sugar essence mainly comprises, by weight, 0.4% of furanone, 0.1 of beta-Ionone, 1.4% of beta-damascone, 0.02% of alpha-damascone, 0.02% of methyl furoate, 0.05% of menthol, 0.2% of 5-methyl furfural, 0.02% of glacial acetic acid, 0.04% of 3-hydroxy-2-butanone, 0.02% of 2-heptanone, 0.45% of n-propyl alcohol, 0.025% of acetaldehyde sweet orange oil liquor of 40%, 0.35% of sugar lactone of 3%, 0.25% of n-pentanoic acid, 45% of glycerol and 51.655% of propylene glycol. The volatile fragrance of the whole brown sugar essence is sweet, naturality is high, body fragrance and fullness are achieved, and the base fragrance lasts long. The brown sugar essence can be applied to various kinds of food needing brown sugar flavor and can meet increasing material culture life requirements of people.

The invention discloses 5-hydroxy-1, 7-diphenyl-3-heptanone separated from galangal and application of the 5-hydroxy-1, 7-diphenyl-3-heptanone. After the 5-hydroxy-1, 7-diphenyl-3-heptanone is intervened, sugar tolerance is obviously improved, and the effect of the 5-hydroxy-1, 7-diphenyl-3-heptanone on improving IR is obvious. The compound can up-regulate the transcriptional level of Nrf2 mRNA and downstream target genes.

The invention relates to a method for preparing ketone compounds. According to the method, an ABE fermentation solution (acetone-butanol-ethanol water solution) is adopted as a reactant, and the ketone compounds are prepared through a reaction under catalysis of a cerium-based composite oxide. The reaction conditions are as follows: the reaction is carried out at normal pressure in a fixed bed reactor, a reaction temperature is 350-500 DEG C, and a feeding mass space velocity of the ABE is 0.1-2.0 h<-1>. The method is characterized in that the cerium-based composite oxide is used as the catalyst, the catalyst is simple to prepare and has good stability, the ketone compounds are generated through efficiently catalyzing the ABE, the conversion rate is up to 95% (based on the total carbon number), and the total selectivity of the ketone compounds can reach 99%, wherein the selectivity of 4-heptanone is 92%, and the selectivity of 2-pentanone is 8%.

The invention relates to an efficient synthetic method of a natural product harringtonine intermediate with D-ring. A raw material of N-acyl-3,4-methoxy methylene benzo-3-N-heterocyclic heptanone is subjected to three steps including deacylation, N-C acylation and carbonyl alpha-site alkylation to complete construction of the D-ring of harringtonine, namely 3,4-methoxy methylene benzo-3-N-heterocyclic heptanone and ketopyrrolidine. Products from each step can be purified by a recrystallization method, and the method has simple operation, total yield reaching 81% and good industrial prospect.

A method of detecting hypoxia. Detecting hypoxia includes detecting, in exhaled breath, at least one indicator for hypoxia. The at least one indicator is selected from the group consisting of pentanal, 2-pentanone, 2-hexanone, 2-heptanone, 2-cyclopenten-1-one, and 4-butyrolactone.

The invention provides a quantitative detection method of rapeseed oil doped in edible oil, the method comprises the following steps: taking 2-methyl-3-heptanone as an internal standard, quantitatively detecting a characteristic volatile component cembrarene in a sample through SPME-GC / MS, calculating the ratio of the peak area corresponding to the separated matter cembrarene to the internal standard peak area, and calculating the relative content of the rapeseed oil in the sample through the standard curve so that quantitative detection of the content of the rapeseed oil in the sample is achieved. The method has the advantages of good reliability, simplicity, convenience and rapidness, and can relatively accurately analyze the content of the rapeseed oil in the edible vegetable oil and judge whether the edible vegetable oil is adulterated.

The invention belongs to the technical field of medicines, relates to a novel diaryl heptane compound extracted from cortex juglandis mandshuricae, and discloses a method for preparing the compound and application. The specific preparation process comprises the following steps: performing alcohol extraction method, organic solvent extraction method, purification and enrichment of a Girard reagent, silica gel column chromatography separation, preparative HPLC separation and the like on cortex juglandis mandshurica to obtain one cyclic ether type diaryl heptane compound named as 3 ', 4'-epoxy-1-(4 '-methoxyphenyl)-7-(2' ', 6'-dihydroxy-3 ''-methoxyphenyl)-3-heptanone, and further comprises the following steps of: performing column chromatography on the cyclic ether type diaryl heptane compound to obtain the 3 ', 4'-epoxy-1-(4 '-methoxyphenyl)-7-(2' ', 6'-dihydroxy-3 ''-methoxyphenyl)-3-heptanone. The molecular formula of the compound is C21H24O6. In-vitro anti-tumor activity research shows that the compound has a certain inhibition effect on human cervical cancer cells Hela and human liver cancer cells HepG-2. The method for preparing the diaryl heptane compound is clear and controllable in operation, and the obtained compound is few in impurity and high in purity and has the application prospect of being developed into anti-tumor drugs.