CAS: 104-50-7; 5-Butyldihydrofuran-2(3H)-One

相似化合物

104-61-0 104-67-6 706-14-9

上下游产品

4-oxo-4-thiophen-2-yl-butyric acid trans-5-°Ctenoic acid 6-hydroxy°Ctanoic acid 4,7-dioxo°Ctanoic acid1,4-Dichlor-°Ctan 4-Benzyloxy-°Ctanoic acid methyl ester 2-Diphenylphosphinoyl-6-hydroxydecan-3-one Succinic acid mono-[(S)-1-(2-benzylcarbamoyl-ethyl)-pentyl] ester

Trans-Hepten-(4)-Carbonsaeure-(1)置于ppa体系中,化学反应生成丙位辛内酯
参考文献:Riobe,Comptes Rendus Hebdomadaires Des Seances De L'Academie Des Sciences,1958,Vol. 247,P. 1016
标题:Riobe,Comptes Rendus Hebdomadaires Des Seances De L'Academie Des Sciences,1958,Vol. 247,P. 1016

专利信息

专利号:EP-4092127-A1
优先权日:2021-05-18
标题:Enzyme-catalytic method for the direct stereoselective synthesis of gamma-(acyloxy) carboxylic acids
发明人：PARVE JAAN; KUDRJASHOVA MARINA; GATHERGOOD NICHOLAS; PARVE OMAR
权利人:TALLINN UNIV OF TECHNOLOGY
摘要:The present invention is a method for the stereoselective straightforward synthesis of gamma-acyloxy carboxylic acids of novel structure starting from racemic gamma-hydroxy carboxylic acid salts that are obtained by alkaline hydrolysis of the racemic gamma-lactones. The salt is acylated by enzyme catalysis in an organic solvent containing an acyl donor and an immobilised lipase, on stirring at room temperature (ca 20 °C) until reaching the conversion rate required. After that, the reaction mixture is acidified and extracted and the product treated with catalytic amount of para-toluenesulfonic acid in toluene during the time required for the relactonisation of the unreacted salt enantiomer. Thereafter, the target gamma-acyloxy carboxylic acid formed from one enantiomer of the starting compound and relactonised gamma-lactone formed from the other, unreacted enantiomer of the starting compound are isolated using a routine separation method, such as distillation, extraction with NaHCO3 water solution followed by acidification or column chromatography.

专利号:US-10801033-B2
优先权日:2016-04-05
标题 :Recombinant polynucleotide involved in lactone synthesis and process for synthesis of lactones thereof
发明人：GUPTA VIDYA SHRIKANT; DESHPANDE ASHISH BALWANT; OAK PRANJALI SUDHIR; GIRI ASHOK PRABHAKAR
权利人:COUNCIL SCIENT IND RES
摘要:The present invention provides the polynucleotide encoding enzyme involved in lactone synthesis and a process for synthesis of lactones using said polynucleotides. The invention also provides recombinant plasmid expression vector comprising said polynucleotide sequence. The recombinant protein encoded by said polynucleotides leads to synthesis of lactones having flavour peculiar to Alphonso mangoes.

专利号:US-9709891-B2
优先权日:2005-12-09
标 题:Positive resist composition, resin used for the positive resist composition, compound used for synthesis of the resin and pattern forming method using the positive resist composition
发明人：KANDA HIROMI; KANNA SHINICHI
权利人:FUJIFILM CORP
摘要:A positive resist composition comprises: (A) a resin of which solubility in an alkali developer increases under an action of an acid; (B) a compound capable of generating an acid upon irradiation with actinic rays or radiation; (C) a resin having at least one of a fluorine atom and a silicon atom; and (D) a solvent; and a pattern forming method using the positive resist composition.

专利号:US-2019153459-A1
优先权日:2016-04-05
标题 :Recombinant polynucleotide involved in lactone synthesis and process for synthesis of lactones thereof

专利号:US-8653223-B2
优先权日:2008-04-16
标题:Transketalized compositions, synthesis, and applications
发明人：SELIFONOV SERGEY; GOETZ ADAM EDWARD; JING FENG
权利人:SELIFONOV SERGEY; GOETZ ADAM EDWARD; JING FENG; SEGETIS INC
摘要:Ketal compounds of the structure I n nand a method of preparation of the compound from polyols and oxocarboxylates, as well as uses thereof.

专利号:US-2008081290-A1
优先权日:2006-09-25
标 题 :Resist composition, resin for use in the resist composition, compound for use in the synthesis of the resin, and pattern-forming method using the resist composition