141-10-6Relevant articles and documents
Water-promoted surface basicity in FeO(OH) for the synthesis of pseudoionones (PS) and their analogues
Vernekar, Dnyanesh,Sakate, Sachin S.,Rode, Chandrashekhar V.,Jagadeesan, Dinesh
, p. 80 - 89 (2019)
Use of Iron oxyhydroxide (γ-FeO(OH)) as a robust catalyst for the synthesis of important intermediates like pseudoionones and their analogues through the C-C bond formation reactions like knoevenagel and aldol condensation is explored. These motifs are the building blocks for the construction of the sesquiterpenes as well as the diterpenes such as retinoic acid, Vitamin A etc. Iron oxyhydroxide (γ-FeO(OH)) was synthesized and well characterized using XRD, FT-IR, TEM, XPS and adsorption studies to establish the catalytic activity. A thorough investigation on the nature of basic sites and the role of water as a promoter was explored based on dye adsorption, in situ methanol dissociation and CO2 adsorption studies. The catalyst also showed a wide range of substrate scope with active methylene groups involving various functional groups such as cyanides, esters and acetophenones along with its stability and reproducibility.
Chen,Le Fevre
, p. 5528,5532 (1965)
Epoxides from myrcene: New versatile tools for the synthesis of functionalized acyclic terpenoids
Fauchet,Miguel, B. Arreguy-San,Taran,Delmond
, p. 3673 - 3684 (1999)
Mono-epoxides prepared from myrcene, were used as synthetic intermediates to obtain citral, linalool, geranylacetone and pseudo-ionone.
Preparation method of pseudoionone
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Paragraph 0027-0056, (2021/03/13)
The invention provides a preparation method of a vitamin A intermediate pseudoionone. The method relates to a reaction for preparing pseudoionone by catalyzing condensation of acetone and citral by using a novel catalyst, the use amount of reaction acetone can be effectively reduced by using the novel catalyst, self-polymerization and copolymerization of citral and pseudoionone in the reaction arereduced, and the reaction selectivity and yield are improved.
APPARATUS FOR AND PROCESS OF MAKING PSEUDOIONONE AND HYDROXY PSEUDOIONONE
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Page/Page column 32-33, (2020/06/05)
The invention relates to an apparatus (1) for producing pseudoionone and hydroxy pseudoionone. It suggests an apparatus (1) comprising first and second substantially vertically oriented reactor chambers oriented such that components flow through the first and second reactor chambers in different directions, wherein the first reactor chamber (13) is configured to receive a first component feed (C1) containing a first aqueous mixture through an inlet (15), and to produce a second aqueous mixture, and wherein the apparatus (1) comprises a mixing device (17) positioned downstream of the first component feed inlet (15)and configured to add a second component feed (C2) to the first component feed (C1) when the second aqueous mixture has formed, and the second reactor chamber (23) is configured to receive the first and second component feeds unified in the mixing device (17) from the first reactor chamber (13) and to produce a third aqueous mixture from the first and second aqueous mixtures. The invention further suggests a method and a use for producing pseudoionone and hydroxy pseudoionone.
Method for catalytically synthesizing pseudoionone by using alkaline immobilized ionic liquid
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Paragraph 0023-0033, (2020/06/09)
The invention discloses a method for catalytically synthesizing pseudoionone by using alkaline immobilized ionic liquid. In the method, citral is adopted as a raw material, acetone is slowly dropwiseadded at 40-50 DEG C under the condition that the alkaline immobilized ionic liquid is used as a catalyst to react, thereby obtaining the pseudoionone; a carrier used in the alkaline immobilized ionicliquid is a PS material, the PS material is polystyrene, and the alkaline immobilized ionic liquid is one of the following components shown in the specification. The alkaline immobilized ionic liquidcatalyst disclosed by the invention is easy to separate from a reaction solution, avoids the condition of catalyst loss caused by multiple cyclic reactions, and has the advantages of high product yield, clean product and the like in the process of synthesizing pseudoionone.