CAS: 497-23-4; Furan-2(5H)-One

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2,5-二乙氧基-2,5-二氢呋喃置于硫酸体系中,用 水,丙酮 作为反应溶剂,化学反应 12.0H,以82%的收率获得产物2(5H)-呋喃酮
参考文献:一种γ-巴豆酰内酯及其衍生物的合成方法
标题:一种γ-巴豆酰内酯及其衍生物的合成方法
摘要:本发明涉及一种γ‑巴豆酰内酯及其衍生物的合成方法,其中γ‑巴豆酰内酯的合成方法是通过以2,5‑二氢呋喃类化合物为原料的水解反应制的;γ‑巴豆酰内酯的衍生物为γ‑巴豆酰内酯的α‑衍生物,γ‑巴豆酰内酯的α‑衍生物是通过γ‑巴豆酰内酯的baylis‑hillman反应制备而成的.γ‑巴豆酰内酯及其α‑衍生物在有机合成化学,药物化学上都具有非常广泛的用途.本发明的合成方法的优点在于原料易得,试剂廉价,路线简短,条件温和,操作简单,易于工业化生产.

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:US-3992413-A
优先权日:1975-07-25
标 题 :Intermediates in the synthesis of prostaglandins
发明人：TAUB DAVID; WENDLER NORMAN L
权利人:MERCK & CO INC
摘要:The invention relates to a new and novel synthesis of prostaglandin E 2 , and it particularly relates to a novel process starting with relatively inexpensive starting materials. The invention further relates to a synthesis which is readily adaptable for large scale processing because of the high yields in the individual reaction steps. n The invention further relates to novel compounds formed as intermediates in the synthesis of prostaglandin E 2 . The invention still further relates to synthetic analogs and known metabolites of prostaglandin E 2 and prostaglandin E 1 , useful as standards in certain biological assays for determining prostaglandin-like activity.

专利号:US-3992439-A
优先权日:1972-04-17
标 题:Synthesis of prostaglandins of the 'one'-series
发明人：SCHAAF THOMAS K; COREY ELIAS J
权利人:PFIZER
摘要:In the synthesis of prostaglandins of the 'one' -series an alteration in the conventional reaction sequence avoids side reactions and provides an improved synthesis via a series of novel intermediates. In this improved synthesis the side chain at the 8 position is attached to the five membered ring before the side chain at the 12 position is attached.

专利号:US-6159673-A
优先权日:1996-07-17
标 题:Oxonol compound, light-sensitive material and process for the synthesis of oxonol compound
发明人：NISHIGAKI JUNJI; DEGUCHI YASUAKI
权利人:FUJI PHOTO FILM CO LTD
摘要:An oxonol compound is represented by the following formula (I): in which Z is an atomic group that forms a cyclic amide ring; each of W1 and W2 independently is an atomic group that forms an acidic nucleus ring; and M is a cation. Other oxonol compounds, a light-sensitive material containing an oxonol compound and a process for the synthesis of an oxonol compound are also disclosed.

专利号:US-4167513-A
优先权日:1977-09-06
标题 :Synthesis of unsaturated esters and lactone from butadiene and carbon dioxide
发明人：MUSCO ALFREDO; SANTI ROBERTO; CHIUSOLI GIAN P
权利人:MONTEDISON SPA
摘要:Octadienyl esters of 2-ethylidene-hepta-3,5-dienoic and 2-vinyl-hepta-3,5-dienoic acids of formula C 8 H 11 COOC 8 H 13 and δ-lactone of formula ##STR1## or 2-ethylidene-hepta-6-ene-5-olide, are prepared by reaction of 1,3-butadiene with CO 2 at a temperature comprised between about 20° and 150° C. and at a total pressure between about 10 and 500 atm in the presence of a phosphinic complex of palladium having the formula Pd[P(R) 3 ] x , wherein x is an integer from 2 to 4, and (R) 3 is a homogeneous or heterogeneous group consisting of alkyls, cycloalkyls having up to 8 carbon atoms and of phenyls, also substituted, in an inert atmosphere. n The obtained products are 'per se' new and are valuable intermediates for synthesis of chemicals (fungicides, pesticides, etc.) and in particular as effective plasticizers.

专利号:EP-1473330-B1
优先权日:1996-07-17
标题:Process for the synthesis of oxonol compound
发明人：NISHIGAKI JUNJI; DEGUCHI YASUAKI
权利人:FUJI PHOTO FILM CO LTD
摘要:An oxonol compound is represented by the following formula (I): in which each of Z, W<1> and W<2> independently is an atomic group that forms a heterocyclic ring; and M is a cation. A process for the synthesis of an oxonol compound is disclosed.