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991.
Molla R. IslamAuthor Vitae Zhenzhen LuAuthor VitaeXue LiAuthor Vitae Avijeet K. SarkerAuthor VitaeLiang Hu Paul ChoiXi Li Narek HakobyanMichael J. Serpe 《Analytica chimica acta》2013
Stimuli-responsive polymers are capable of translating changes in their local environment to changes in their chemical and/or physical properties. This ability allows stimuli-responsive polymers to be used for a wide range of applications. In this review, we highlight the analytical applications of stimuli-responsive polymers that have been published over the past few years with a focus on their applications in sensing/biosensing and separations. From this review, we hope to make clear that while the history of using stimuli-responsive polymers for analytical applications is rich, there are still a number of directions to explore and exciting advancements to be made in this flourishing field of research. 相似文献
992.
993.
994.
Zhao‐Hui Yan Zhu‐Zhen Han Xian‐Qing Hu Qing‐Xin Liu Wei‐Dong Zhang Run‐Hui Liu Hui‐Liang Li 《Helvetica chimica acta》2013,96(1):85-92
Two new sesquiterpenes, 1 and 2 , as well as the five known compounds 3 – 7 , were isolated from the stems of Euonymus alatus. Compounds 2 – 7 have a β‐dihydroagarofuran skeleton. The structures of these compounds were elucidated mainly by spectroscopic methods (1D‐, 2D‐NMR, ESI‐MS, and HR‐ESI‐MS). We also report the X‐ray crystal structure of evonine ( 3 ) for the first time. 相似文献
995.
Cong‐Mei Cao Yi‐Bing Wu Rui‐Xia Guo Mei Dong Françoise Sauriol Chang‐Hong Huo Qing‐Wen Shi Teiko Yamada Hiromasa Kiyota Yu‐Cheng Gu Bin Cong 《Helvetica chimica acta》2013,96(3):375-378
Torreyanoxane, a novel 3,4‐secoglutinane triterpenoid, was isolated from the pulp of Torreya nucifera. The structure was determined on the basis of spectroscopic methods. 相似文献
996.
Two novel tricoordinate phosphorous saccharides, methyl 4,6-O-benzylidene- α -D-glucopyranoside 2,3-cyclic phosphite ethyl ester 3 and its mannoside analogue 5 were synthesized by the reaction of protected pyrannosides (1 and 4) with ethyl dichlorophosphite 2. Addition of 2,3-butanedione to 3 resulted in the formation of pentacoordinate phosphorous compound 6. 相似文献
997.
The Knoevenagel condensation of Meldrum's acid with aromatic aldehydes proceeded efficiently in a reusable ionic liquid, ethylammonium nitrate, at room temperature in the absence of any catalyst with high yields. 相似文献
998.
A general and efficient synthetic method of 1,3-bis(phenylseleno)-2-propanol by reducing diphenyl diselenides with sodium borohydride in basic environment and then reacting with epichlorohydrin are described. 相似文献
999.
Hu Chen Ding-Quan Qian Guo-Xiang Xu Yu-Xiu Liu Xiao-Dong Chen Xiao-Dong Shi 《合成通讯》2013,43(22):4025-4033
Phosphonyl hydrazones react with DMF/POC13 to afford 3-phosphonyl pyrazoles. Phosphonyl methylene hydrazones react with DMF/POC13 to provide 4-phosphonyl pyrazoles. 5-Phosphonyl pyrazoles are obtained from the reaction of phosphonyl chlorovinylaldehydes with phenylhydrazine. 相似文献
1000.
A direct, concise, synthetic method for the generation of [1,2,3]triazolo[5,1-a]isoquinoline derivatives, using a selective cascade cyclization of unsymmetrical substituted 1,2-bis(phenylethynyl)benzene derivatives with NaN3, has been developed. The reaction gave different substituted [1,2,3]triazolo[5,1-a]isoquinolines in moderate to good yields. It was found that the substituents on the alkynes were important for the selectivities of the cascade cyclization sequences. 相似文献