CAS: 612-14-6; 1,2-Benzenedimethanol

上下游产品

2-benzofuran-1(3H)-one phthalic anhydride Diethyl phthalate monoethyl phthalate benzene1,2-bisbenzene 1,3-dihydroisobenzofuran 2-benzofuran-1(3H)-one o-Xylylene dichloride

邻苯二甲酸二甲酯置于sodium Tetrahydroborate,[fac-Pnn]Ruh(Pph)3(Co),氢气体系中,用 四氢呋喃 作为反应溶剂,120.0 °C,5.0 Mpa 条件下,反应 24.0H,以30%的收率获得产物邻苯二甲醇
参考文献:柔性pnn-Ru(II)配合物与nabh 4添加剂在酯的有效催化加氢中的协同相互作用†
标题:柔性pnn-Ru(II)配合物与nabh 4添加剂在酯的有效催化加氢中的协同相互作用†
摘要:催化剂负载量为含pnn的钌(II)配合物[Fac-Pnn] Ruh(pph 3)(co)(pnn = 8-(2-二苯基膦基乙基)氨基三氢喹啉)的0.001-0.05 Mol%摩尔%的nabh 4可以在温和的氢气压力下有效催化酯加氢成相应的醇.芳族和脂族酯都可以以高的ton或tof值转化.使用dft计算和标记实验进行的机理研究突显了nabh 4在催化中的协同作用,而催化活性物质已被确定为反式-二氢化物[Mer-Pn Hn] Ruh 2(co)(pn H N = 8-(2-二苯基膦乙基)氨基三氢喹啉).pn H N-钌物种的立体结构极大地影响了催化剂的活性,实际上,顺式-二氢异构体[Fac-Pn H N] Ruh 2(co)不能催化酯的氢化,直到配体重组为止发生以得到反式异构体.
DOI:10.1039/c6Cy02413K

专利信息

专利号:WO-2023152730-A1
优先权日:2022-02-14
标题 :Amine-borane adducts in the synthesis of polyester and its copolymers using cyclic esters and compositions thereof
发明人：FENG XIAOSHUANG; LIU JINGJING; GNANOU YVES
权利人:UNIV KING ABDULLAH SCI & TECH
摘要:Embodiments of the present disclosure provide for the process of synthesis of polyester and its copolymers through (co)polymerization of cyclic esters and with other oxygenated monomers using amine-borane adduct. Embodiments of the present disclosure further describe the controlled anionic ring-opening polymerization of the cyclic compounds. Embodiments of the present disclosure also describe the polymerization of cyclic compounds using the synergistic effect of amines and thioureas. Embodiments of the present disclosure also describe compositions of polymers formed by the said process.

专利号:WO-9900440-A1
优先权日:1997-06-26
标 题:Synthesis of a dendritic polyalcohol
发明人：IHRE HENRIK; HULT ANDERS
权利人:PERSTORP AB; IHRE HENRIK; HULT ANDERS
摘要:A process for a double stage convergent synthesis of a polymeric polyalcohol substantially and preferably built up from polyester units and composed of a monomeric or polymeric core to which at least one hyperbranched dendritic branch (dendron) consisting of a number of branching generations is added. The branching generations comprise a polymeric or monomeric branching chain extender having three reactive functions of which two are hydroxyl groups and one is a carboxyl group. The two hydroxyl groups of the branching chain extender is in a first step ketal protected by reacting said two hydroxyl groups with a ketal. A second step includes protection of the carboxyl group of said branching chain extender. The ketal protected branching chain extender and the carboxyl protected chain extender are then employed for repeated addition in a number of step yielding a predetermined number of branching generations. The thus synthesized dendron is finally added to a core having reactive hydroxyl or epoxide groups and the ketal protected hydroxyl groups are optionally deprotected.

专利号:WO-9516049-A1
优先权日:1993-12-08
标题 :Catalytic chemo-enzymatic asymmetric synthesis of carbohydrates
发明人：WONG CHI-HUEY; SHARPLESS BARRY K
权利人:SCRIPPS RESEARCH INST; WONG CHI HUEY; SHARPLESS BARRY K
摘要:A stereoselective synthesis of carbohydrates employs two key stereoselective steps, viz. an osmium-catalyzed asymmetric dihydroxylation (AD) of an alkene to form an aldol intermediate and an aldolase-catalyzed aldol addition reaction wherein the aldol intermediate is elongated by the addition of a ketone. Moreover, ketoses having four new stereocenters can be synthesized without the use of chiral starting materials. The stereoselectivity of the asymmetric dihydroxylation (AD) reaction is determined by the cis or trans (Z or E) stereoisomeric configuration of the alkene and by the choice of AD-mix, i.e., an AD-mix-α or AD-mix-β. The stereoselectivity of the aldolase-catalyzed addition reaction is determined by the choice of aldolase and by the stereochemistry of the aldol intermediate. Four aldolases with broad substrate specificity are sufficient to produce all possible enantiomeric combinations of the two hydroxymethylene stereocenters formed during the aldol addition reaction. Accordingly, a synthetic scheme combining an osmium-catalyzed asymmetric dihydroxylation (AD) reaction and an aldolase-catalyzed aldol addition reaction enables direct access to a wide range of carbohydrate derivatives containing up to four new hydroxymethylene stereocenters.

专利号:US-10487099-B2
优先权日:2017-06-30
标 题:Synthesis of hypervalent iodine reagents with dioxygen
发明人：POWERS DAVID CHARLES; MAITY ASIM; HYUN SUNG-MIN
权利人:TEXAS A & M UNIV SYS
摘要:Methods of synthesis of hypervalent iodine reagents and methods for oxidation of organic compounds are disclosed.

专利号:US-6201101-B1
优先权日:1998-11-19
标 题:Catalyst and its use for the synthesis of polyol polyethers
发明人：TOZZOLA GABRIELLA; PO' RICCARDO; CARDI NICOLETTA
权利人:ENICHEM SPA
摘要:The present invention relates to a catalyst having general formula (I):wherein: M represents at least one cation of an element selected from earth-alkaline metals belonging to groups IIA, IIIA, VA, or transition metals belonging to groups IIB, IIIB, VB or VIIIB; n represents an integer between 0 and 2 and x is an integer between 2 and 5.The invention also relates to a process for the synthesis of polyol polyethers which uses a catalyst having general formula (I).

专利号:WO-2024121087-A1
优先权日:2022-12-07
标 题 :Process for the synthesis of polyesterols by ring-opening co-polymerisation of gamma-butyrolactone with other lactones
发明人：SCHAUB THOMAS; NICOLAS MATHIEU; FALCONNET ALBAN; HASHMI A STEPHEN K; KONRADI RUPERT; RODEWALD DIETER; BRUCHMANN BERND
权利人:BASF SE
摘要:Described are a process for the synthesis of polyesterols by ring-opening co-polymerisation of γ-butyrolactone with other lactones, the use of a kit comprising one or more bases comprising an alkaline metal cation and one or more alcohols in said process, and polyesterols obtainable by said process.