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Lian Peng Tong ;Jing Nan Cui ;Wei Min Ren ;Xing Yong Wang ;Xu Hong Qian 《中国化学快报》2008,19(10):1179-1182
Regio- and enantioselective reduction of substituted acenaphthenequinones were conducted under mild reaction conditions using plant enzymatic systems. A screening of 15 plants allowed the selection of two suitable plants fulfilling enantiocomple- mentarity. The (+)- and (-)-mono hydroxyacenaphthenones were achieved with high conversion and good enantiomeric purity using peach (Prunus persica (L.) Batsch., conversion 98%, 71% ee) and carrot (Daucus carota L., conversion 95%, 81% ee), respectively. 相似文献
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The orange-red 8,9-dihydroacenaphtho[1,2-b] [1,4]dioxins were synthesized by the photo-Diels-Alder reaction of acenaphthenequinone with the corresponding alkenes. The products were characterized by spectroscopic and X-ray methods. 相似文献
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Guo Liang Feng 《中国化学快报》2010,21(9):1057-1061
<正>An efficient synthesis of symmetrical 2,2-bis(1H-indol-3-yl)-2H-acenaphthen-1-one is achieved via a reaction of acenaphthe-nequinone and indoles catalyzed by solid superacid SO_4~(2-)/TiO_2 under solvent-free conditions at room temperature by grinding, which provides an efficient route to the synthesis of symmetrical 2,2-bis(1H-indol-3-yl)-2H-acenaphthen-1-one.This procedure offers several advantages including solvent-free conditions,excellent yields of products,simple work-up as well as reuse of catalysts which makes it a useful and attractive protocol for the synthesis of these compounds. 相似文献
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A facile and efficient one-pot three-component synthesis of the spiroacenaphthylene derivatives was achieved, via the reaction of acenaphthequinone, malononitrile/ethylcyanoacetate and various reagents including α-methylencarbonyl compounds/enols. 相似文献
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We have reported DBU-catalyzed one-pot synthesis of biologically and pharmacologically important spiropyrans from condensation of malononitrile/ethyl cyanoacetate, 1,3-dicarbonyl compounds, and ninhydrin/acenaphthequinone/istain in good yields. This new protocol employing DBU, which is a green, recyclable, and inexpensive catalyst, offers advantages such as mild reaction conditions, short reaction times, and easy isolation of products. The structures have been confirmed by x-ray analysis. [Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications® for the following free supplemental resource(s): Full experimental and spectral details.] 相似文献
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An efficient synthesis of 3,3-di(1H-indol-3-yl)indolin-2-ones and 2,2-di(1H-indol-3-yl)-2H-acenaphthen-1-ones via a reaction of various isatins or acenaphthenequinone with indoles in the presence of p-methylbenzene sulfonic acid (p-TSA) in CH2Cl2 at room temperature is described. The advantages of this method include good reaction yield, simple workup procedure, and mild reaction condition. 相似文献
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合成了新型配合物Pd(Ⅱ)苊醌缩氨基硫脲,用元素分析、红外光谱、紫外光谱、核磁共振光谱和热分析对配合物进行了表征,并用荧光光谱研究了配体和配合物与DNA的相互作用。结果表明,配合物中配体以氧、氮和硫(ON S)三齿鳌合形式与金属离子配位,配合物与DNA的结合能力远大于配体。 相似文献
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Kamal M. El‐Shaieb 《中国化学会会志》2008,55(5):1150-1155
1‐(Dicyanomethylene)acenaphthene‐2‐one ( 1 ) reacts with 1,8‐diaminonaphthalene ( 2 ) to yield two products, identified as acenaphtho[1,2‐b]naphtho[1,8‐ef][1,4]diazepine ( 3 ) and (Z)‐2‐(8‐aminonaphthalen‐1‐ylamino)‐2‐(2‐oxoacenaphthylen‐1(2H)‐ylidene)acetonitrile ( 4 ). On the other hand, (2Z,2′Z)‐2,2′‐(hydrazine‐1,2‐diylidene)diacenaphthylen‐1(2H)‐one ( 6 ) was obtained during the condensation process of 1 with hydrazine hydrate ( 5 ). Reaction of 1 with 3,4‐diaminotoluene ( 8b ) produces 9‐methylacenaphtho[1,2‐b]quinoxaline ( 9b ) and (Z)‐2‐(2‐amino‐5‐methylphenyl‐amino)‐2‐(2‐oxoacenaphthylen‐1(2H)‐ylidene)acetonitrile ( 10b ). However, treatment of 5,6‐diamino‐pyrimidine‐2,4‐diol hemisulphate ( 11 ) with 1 affords acenaphtho[1,2‐g]pteridine‐9,11‐diol ( 12 ). 相似文献
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The base promoted four-component reaction of hydrated hydrazine, dimethyl acetylenedicarboxylate, isatines and malononitrile (ethyl cycanoacetate) in ethanol afforded polysubstituted spiro[indoline-3,4‘-pyrano[2,3-c]pyrazoles] and spiro[acenaphthyl-3,4-pyrano[2,3-c]pyrazoles] 相似文献
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