Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

314 results about "Enone" patented technology

An enone, also called an α,β-unsaturated carbonyl, is a type of organic compound consisting of an alkene conjugated to a ketone. The simplest enone is methyl vinyl ketone (butenone) or CH₂=CHCOCH₃. An enal is the corresponding α,β-unsaturated aldehyde, an example being acrolein (CH₂=CHCHO).

Method for continuously synthesizing ethyl 4-chloroacetoacetates

The invention relates to a method for continuously synthesizing ethyl 4-chloroacetoacetates. The method comprises the following steps: pumping a cooled diketene solution into a falling film reactor through a metering pump, and enabling the cooled diketene solution to uniformly form a film through a distributor, and flow into the reactor from a tower top; meanwhile, controlling the flow of chlorine gas through a gas flow meter; introducing the chlorine gas into the reactor through a gas distributor; carrying out a reaction on the diketene and the chlorine gas on the surface of the falling film reactor; after the reaction is finished, enabling reaction liquid to flow out from a tower bottom and enter an esterification reaction kettle; pumping in different alcohols and overflowing into a next esterification reaction kettle to continually react; absorbing hydrogen chloride gas, which is generated in a reaction process, with water; after the reaction is finished, washing with water and neutralizing to remove the residual hydrogen chloride; distilling an organic phase to recycle a solvent and excessive alcohol raw materials to obtain a crude product; rectifying the crude product to obtain an ethyl 4-chloroacetoacetates product. With the adoption of the method, reaction time can be shortened, energy consumption is reduced, polychlorides are controlled, reaction selectivity is improved, rectification is relatively easy, and yield and purity of the product are improved.
Owner:山东德澳精细化学品有限公司

Preparation method of terpenoid and lignan substances in eucommia ulmoides bark or eucommia ulmoides leaves and application of terpenoid and lignan substances in preparation of senile dementia treatment drug

The invention relates to a preparation method of terpenoid and lignan substances in eucommia ulmoides bark or eucommia ulmoides leaves and an application of the terpenoid and lignan substances in preparation of senile dementia and AD (Alzheimer disease) treatment drugs or healthcare food. The prepared terpenoid substance in the eucommia ulmoides bark or the eucommia ulmoides leaves is one or more of 1-deoxy-delta4,5-eucommiol, 2,3-dyhydroxyl-delta4,5-eucommiol, 5-hydroxyl-3,4-dihydroxymethyl-2-hydroxyethyl-cyclohex- 1-enone-2'-O-beta-D-glucopyranoside), (6R, 7E, 9R)-megastigma-4,7-dien-3-one-9-O-[beta-D-xylopyranos-yl-(1'-6')-beta-D-glucopyranoside, (6S, 7E, 9R)-megastigma-4,7-dien-3-one-9-O-[beta-D-xylopyranos-yl-(1'-6')-beta-D-glucopyranoside] and the like. The prepared lignan substance in the eucommia ulmoides bark or the eucommia ulmoides leaves is one or more of pinoresinol-4,4'-O-beta-D-bis(glucopyranoside), 8-hydroxyl-pinoresinol-4'-O-beta-D-glucopyranoside, lariciresinol-4,4'-O-beta-D- bis(glucopyranoside) and the like. The terpenoid and lignan substances have common or similar structural units such as eucommiol, megastigmane sesquiterpene, bisepoxylignans, single-epoxy lignans and the like, thereby having the similar treatment effect in a human body.
Owner:张忠立
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products