CAS: 108-22-5; Isopropenyl Acetate

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CAS号463-51-4 乙烯酮 | CAS号67-64-1 丙酮 | CAS号187737-37-7 propene | CAS号3375-31-3 醋酸钯 | CAS号29456-04-0 prop-1-en-2-ol | CAS号75-36-5 乙酰氯 | CAS号64-19-7 冰醋酸 | CAS号74-99-7 丙炔 | CAS号591-87-7 乙酸烯丙酯 | CAS号7664-93-9 硫酸 | CAS号105409-38-9 acetic acid,2-p... | CAS号109429-01-8 (S)-(+)-2-O-ben... | CAS号53732-47-1 (S)-(+)-1,2,3,4... | CAS号21503-12-8 acetic acid,1,2... | CAS号23357-51-9 1,2,3,4-tetrahy... | CAS号65915-64-2 acetic acid 1,2... | CAS号23357-45-1 (R)-(-)-1,2,3,4... | CAS号506-96-7 乙酰溴 | CAS号507-02-8 乙酰碘 | CAS号84194-69-4 (±)-2,2,2-trifl...

乙酰丙酮 反应生成乙酸异丙烯酯
参考文献:
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摘要:
Doi:10.1021/j150582A040

专利信息

专利号:US-5849936-A
优先权日:1995-03-15
标题:Method for the synthesis of bis-tetrahydrofuranyl annonaceous acetogenins
发明人：HOYE THOMAS R; TAN LUSHI
权利人:UNIVERISTY OF MINNESOTA
摘要:A method for the synthesis of bis-tetrahydrofranyl Annonaceous acetogenins, including the natural products and analogs thereof, is provided which proceeds by the Pd-mediated coupling of a bis-tetrahydrofuranyl-subunit comprising a terminal alkyne, with a (C4)-hydroxybutenolide subunit comprising a terminal vinyl iodide, followed by selective reduction of the resulting enyne.

专利号:WO-9837078-A1
优先权日:1997-02-20
标题 :Solid phase and combinatorial synthesis of substituted thiophenes and of arrays of substituted thiophenes
发明人：DOERWALD FLORENCIO ZARAGOZA
权利人:NOVO NORDISK AS
摘要:A solid phase method for the synthesis of a plurality of differently substituted thiophenes with a wide variety of side-chain substituents as compounds of potential therapeutic interest. The thiophenes are prepared by reaction of a substrate-bound primary or secondary amine with a thiophosgene equivalent and reaction of the resulting intermediate with an acceptor-substituted acetonitrile in the presence of a base. Alkylation with an appropriate alkyl halide, followed by Thorpe-Ziegler-cyclization yields differently substituted, support-bound 3-aminothiophenes. These may be screened on the substrate or cleaved from the substrate and then screened in solution. Alternatively, the resin-bound 3-amino thiophenes or the synthetic intermediates can be subjected to further synthetic transformations (N-acylation, reduction) on the support, which permits the preparation of further therapeutically interesting compounds. The efficient synthesis of a wide variety of thiophenes using automated synthesis technology of the present method makes these compounds attractive candidates for the generation and rapid screening of diverse thiophene-based libraries. The method disclosed here provides an easy and fast access to highly diverse heterocyclic compounds of therapeutic interest, amenable to automatization.

专利号:WO-9740025-A1
优先权日:1996-04-19
标 题 :Solid phase and combinatorial synthesis of substituted 1,2,3-triazoles and of arrays of substituted 1,2,3-triazoles
发明人：DOERWALD FLORENCIO ZARAGOZA
权利人:NOVO NORDISK AS; DOERWALD FLORENCIO ZARAGOZA
摘要:A solid phase method for the synthesis of a plurality of differently substituted 1,2,3-triazoles with a wide variety of side-chain substituents as compounds of potential therapeutic interest. The 1,2,3-triazoles are prepared by acylation of a substrate-bound primary or secondary amine with a 3-oxoalkanoic acid and reaction of the resulting amide with a primary amine under dehydrating conditions to give an enamine. Treatment of this substrate-bound enamine with a sulfonyl azide in the presence of a base gives the corresponding 1,2,3-triazoles. These may be screened on the substrate or cleaved from the substrate and then screened in solution. The efficient synthesis of a wide variety of 1,2,3-triazoles using automated synthesis technology of the present method makes these compounds attractive candidates for the generation and rapid screening of diverse triazole-based libraries. The method disclosed here provides an easy and fast access to highly diverse heterocyclic compounds of therapeutic interest, amenable to automatization.

专利号:US-8222458-B2
优先权日:2008-06-13
标题 :Process or synthesis of (3S)- and (3R)-3-hydroxy-beta-ionone, and their transformation to zeaxanthin and beta-cryptoxanthin
发明人：KHACHIK FREDERICK; CHANG AN-NI
权利人:KHACHIK FREDERICK; CHANG AN-NI; UNIV MARYLAND
摘要:Disclosed is a process for the synthesis of (3R)-3-hydroxy-β-ionone and its (3S)-enantiomer in high optical purity from commercially available (rac)-α-ionone. The key intermediate for the synthesis of these hydroxyionones is 3-keto-α-ionone ketal that was prepared from (rac)-α-ionone after protection of this ketone as a 1,3-dioxolane. Reduction of 3-keto-α-ionone ketal followed by deprotection, lead to 3-hydroxy-α-ionone that was transformed into (rac)-3-hydrox-β-ionone by base-catalyzed double bond isomerization in 46% overall yield from (rac)-α-ionone. The racemic mixture of these hydroxyionones was then resolved by enzyme-mediated acylation in 96% ee. (3R)-3-Hydroxy-β-ionone and its (3S)-enantiomer were respectively transformed to (3R)-3-hydroxy-(β-ionylideneethyl)triphenylphosphonium chloride [(3R)-C 15 -Wittig salt] and its (3S)-enantiomer [(3S)-C 15 -Wittig salt] according to known procedures. Double Wittig condensation of these Wittig salts with commercial available 2,5- dimethtylocta-2,4,6-triene-1,8-dial provided all 3 stereoisomers of zeaxanthin. Similarly, (3R)-C 15 -Wittig and its (3S)-enantiomer were each coupled with β-apo-12′-carotenal.

专利号:US-11542269-B2
优先权日:2018-01-03
标 题:Prins reaction and compounds useful in the synthesis of halichondrin macrolides and analogs thereof
发明人：CHOI HYEONG-WOOK; FANG FRANCIS G
权利人:EISAI R&D MAN CO LTD
摘要:The invention provides methods utilizing Prins reaction in the preparation of compounds that may be useful as intermediates in the synthesis of halichondrin macrolides and analogs thereof. The invention also provides compounds that may be useful as intermediates in the synthesis of a halichondrin macrolides and methods for preparing the same.

专利号:US-10913749-B2
优先权日:2015-05-07
标 题 :Macrocyclization reactions and intermediates and other fragments useful in the synthesis of halichondrin macrolides
发明人：FANG FRANCIS G; KIM DAE-SHIK; CHOI HYEONG-WOOK; CHASE CHARLES E
权利人:EISAI R&D MAN CO LTD
摘要:The invention provides methods for the synthesis of a halichondrin macrolides through a macrocyclization strategy. The macrocyclization strategy of the present invention involves subjecting a non-macrocyclic intermediate to a carbon-carbon bond-forming reaction (e.g., an olefination reaction (e.g., Horner-Wadsworth-Emmons olefination), catalytic Ring-Closing Olefin Metathesis, or Nozaki-Hiyama-Kishi reaction) to afford a macrocyclic macrolide. The invention also provides compounds useful as intermediates in the synthesis of a halichondrin macrolides and methods for preparing the same.