Results 1 to 10 of about 5,053 (175)

Gold(I)-catalysed one-pot synthesis of chromans using allylic alcohols and phenols [PDF]

, 2013
A gold(I)-catalysed reaction of allylic alcohols and phenols produces chromans regioselectively via a one-pot Friedel–Crafts allylation/intramolecular hydroalkoxylation sequence.
Barker, Graeme, Coutant, Eloi, Lee, Ai-Lan, Young, Paul C   +3 more
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The synthesis of 4H-pyran containing hemispherands via pyrylium salts [PDF]

, 1986
Two new hemispherands 2a and 2b containing a central 4H-pyran unit were synthesized via appropiately substituted 2,6-phenyl pyrylium salts; largest ΔGo values of complexation of 2a and 2b with different alkali picrates are found for Na+ and K+
Dijkstra, P.J., Hams, B.H.M., Hertog, H.J. den, Reinhoudt, D.N., Steen, B.J. van   +4 more
core   +2 more sources

Six-membered ring systems: with O and/or S atoms [PDF]

, 2013
A large variety of publications have emerged in 2012 involving O- and S-6- membered ring systems. The increasing number of reviews and other communica- tions dedicated to natural and synthetic derivatives and their biological significance highlights ...
Abe, Abreu, Ackermann, Adcock, Albrecht, Albrecht, Allen, Anantachoke, Anxionnat, Arcadi, Archambeau, Athe, Augustine, Azevedo, Azzam, Barancelli, Barbier, Beaulieu, Beemelmanns, Bharate, Bhattacharyya, Bondalapati, Borkar, Brawn, Brimble, Bunt, Byers, Cai, Cai, Cannon, Cao, Celindro, Chaładaj, Chemler, Chen, Chen, Chen, Chen, Chianese, Chinnagolla, Choi, Chuang, Clarisse, Cook, Cui, Cui, Cui, Das, Dentel, Desimoni, Dias, Dobish, Dong, Donner, dos Santos, Du, Elinson, Enders, Enders, Essig, Fan, Fei, Ferguson, Fernandes, Finefield, Fromentin, Fujioka, Fujita, Fujiwara, Fuwa, Gao, Gao, Gao, Ge, Ghassamipour, Ghebreghiorgis, Ghorai, Ghosh, Ghosh, Ghosh, Ghosh, Giun, Gliszczynska, Goel, Grandane, Gregg, Grove, Gunduz, Guo, Hamilton, Han, Handa, Hintermann, Ho, Hong, Hong, Hornillos, Hossaini, Hou, Hu, Hu, Hu, Hu, Huang, Hung, Huple, Hussain, Iaroshenko, Indukuri, Jacobsen, Jacolot, Jepsen, Jiang, Jung, Kalaitzakis, Kamalraja, Kamat, Karami, Karmakar, Kaur, Kavala, Kazemi, Khaligh, Khan, Khoshkholgh, Khurana, Khurana, Kim, Kim, Kim, Kim, Kitamura, Kobayashi, Kobayashi, Kolla, Komeyama, Kraus, Kraus, Krishna, Kuarm, Kueny-Stotz, Kumar, Kumar, Kumar, Kumar, Kuntiyong, Lee, Levchenko, Li, Li, Li, Li, Li, Li, Li, Lian, Little, Liu, Liu, Liu, Liu, Liu, Liu, Liu, Lu, Lu, Lv, Madabhushi, Mahendar, Maiti, Majetich, Majetich, Majumdar, Majumdar, Majumdar, Majumdar, Mallik, Masters, Miege, Miller, Minami, Miyaoka, Mo, Mo, Mohapatra, Mondal, Mosey, Motamedi, Motti, Mulakayala, Mull, Murai, Nagarapu, Nagasawa, Nair, Nandaluru, Nemati, Nemecek, Nibbs, Nichols, Nishina, Nising, Noda, Olomola, Osyanin, Osyanin, Palanichamy, Pan, Pandit, Parida, Parmar, Parrish, Parthasarathy, Parvatkar, Patil, Pavan, Peh, Pei, Pei, Pei, Pei, Pesyan, Petrone, Pilkington, Pillay, Pina, Pinto, Pisani, Prust, Rad-Moghadam, Raghavan, Rama, Ramachary, Ramachary, Ramachary, Ramesh, Rasolofonjatovo, Raubenheimer, Reddy, Reddy, Reddy, Reddy, Reddy, Reddy, Revanna, Romanov-Michailidis, Roscales, Rubush, Rueping, Rueping, Rueping, Safari, Saha, Saha, Sajna, Samai, Sashidhara, Sashidhara, Sashidhara, Schmidt, Schmidt, Scott, Shaikh, Sharma, Sharma, Sharma, Shekhar, Shekhar, Shen, Shi, Shyshkina, Singh, Singh, Singh, Soeta, Soleimani, Song, Song, Srinivas, Srinivas, Stadlbauer, Sudheedran, Sun, Sun, Sun, Suresh, Szostak, Takaki, Takii, Talavera, Tanaka, Tang, Terada, Thirunavukkarasu, Tieze, Tieze, Tisseh, Tisseh, Tokunou, Tomas, Tomas, Tyrrell, Uyanik, Vadola, VanVeller, Vaz, Verma, Verma, Vidyasagar, Vu, Vyas, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Ward, Wei, Willis, Wilson, Wu, Wu, Xie, Xie, Xu, Yadav, Yadav, Yadav, Yadlapalli, Yamuna, Yang, Yang, Yang, Yang, Yang, Yang, Yao, Yin, Yoshida, Yu, Zak, Zhang, Zhang, Zhang, Zhang, Zhang, Zhao, Zhao, Zhao, Zheng, Zhou, Zhu, Zhu, Zurwerra, Zíñiga, Žádný   +360 more
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Domino reaction of 3-nitro-2-(trifluoromethyl)-2H-chromenes with 2-(1-phenylalkylidene)malononitriles: Synthesis of functionalized 6-(trifluoromethyl)-6H-dibenzo[b,d]pyrans and a rare case of [1,5] sigmatropic shift of the nitro group [PDF]

, 2013
A variety of functionalized 6-(trifluoromethyl)-6H-dibenzo[b,d]pyrans were easily synthesized in good yields under mild conditions by a domino reaction of 3-nitro-2-(trifluoromethyl)-2H-chromenes with 2-(1-phenylethylidene)- and 2-(1-phenylpropylidene ...
Barkov, A. Y., Korotaev, V. Y., Sosnovskikh, V. Y.   +2 more
core   +1 more source

Extending Human Perception of Electromagnetic Radiation to the UV Region through Biologically Inspired Photochromic Fuzzy Logic (BIPFUL) Systems. [PDF]

, 2015
Photochromic Fuzzy Logic Systems have been designed that extend human visual perception into the UV region. The systems are founded on a detailed knowledge of the activation wavelengths and quantum yields of a series of thermally reversible photochromic ...
Albus, Albus, Amanda L. Rightler, B. Mark Heron, Brou, Christopher D. Gabbutt, Conway, Delbaere, di Nunzio, Gegenfurtner, Gentili, Gentili, Gentili, Gentili, Gentili, Gust, Hepworth, Hunt, Lennie, Li, Ling, Lokshin, Ludlow, Maafi, Marshall, Monroy, Pier Luigi Gentili, Solomon, Sung, Szaciłowski, Tovée, Wu, Zadeh, Zadeh, Zeki, Zeki   +35 more
core   +1 more source

Spiropyran-based reversible, light-modulated sensing with reduced photofatigue [PDF]

, 2009
Switchable materials have tremendous potential for application in sensor development that could be applied to many fields. We are focusing on emerging area of wireless sensor networks due to the potential impact of this concept in society.
Aleksandar Radu, Arai, Atabekyan, Bakker, Bakker, Bell, Bletz, Byrne, Byrne, Byrne, Demadrille, Dermot Diamond, Diamond, Diamond, Diamond, Frisch, Garcia, Grofcsik, Inouye, Ipe, Krygowski, Lau, Lau, Massimo Fusaro, Matsushima, McCoy, Nameer Alhashimy, Phillips, Radu, Radu, Robert Byrne, Shao, Silvia Scarmagnani, Stauffer, Stitzel, Suzuki, Taylor, Tomizaki, Tork, Wang, Willner, Winkler, Yang, Zhang, Zhou, Zhou   +45 more
core   +1 more source

Photochromic organic-inorganic hybrid nanocomposite hard coatings with tailored fast switching properties [PDF]

, 1999
A recently developed photochromic organic-inorganic nanocomposite (Nanomer) coating system is investigated, which is based on an epoxysilane as network former, different bisepoxides as spacer and an organic amine as thermal cross-linker.
Fries, Kira, Mennig, Martin, Schmidt, Helmut K.   +2 more
core   +2 more sources

Transient absorption spectroscopy on spiropyran monolayers using nanosecond pump–probe Brewster angle reflectometry [PDF]

, 2013
Self-assembled monolayers of 11-(3’,3’-dimethyl-6,8-dinitrospiro[chromene-2,2’-indoline]-1’-yl) undecanoic acid (amphiphilic spiropyran) at the air–water interface are studied using Brewster angle reflectometry.
Aarts, Aznar, Balashev, Bernhard Siebenhofer, Bletz, Bohne, Christoph Nowak, Gabor, Gorelik, Gorelik, Henon, Hobley, Hobley, Hobley, Hobley, Hobley, Hobley, Hong Yan Song, Horii, Hönig, Hönig, Jonathan Hobley, Katz, Kawai, Kim, Liptay, Martin J. Lear, Matsumoto, Mecheri, Mo, Mo, Muir, Reeves, Rosario, Sasaki, Sergey Gorelik, Siebenhofer, Tachibana, Tamai, Wang, Yamashita   +40 more
core   +1 more source

Spiropyran modified micro-fluidic chip channels as photonically controlled self-indicating system for metal ion accumulation and release [PDF]

, 2009
In this paper, we show how through integrating the beneficial characteristics of micro-fluidic devices and spiropyrans dyes, a simple and very innovative chip configured as an on-line photonically controlled self-indicating system for metal ion ...
Attia, Baillet, Baillet, Baltussen, Basabe-Desmonts, Bowden, Brett Paull, Byrne, Byrne, Chibisov, Collins, Dalavoy, Demadrille, Dermot Diamond, Diamond, Dong, Duffy, Evans, Fernando Benito-Lopez, Garcia, Gorner, Hillborg, Inouye, Joensson, Johnson, Kim, Matsushima, Mirek Macka, Ng, Olah, Owen, Radu, Ren, Rosario, Sakata, Scarmagnani, Shao, Shao, Silvia Scarmagnani, Song, Stitzel, Suzuki, Theodoridis, Tian, Toepke, West, Wu, Yager, Yang, Young, Zarah Walsh, Zhang   +51 more
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Litter Quality of Populus Species as Affected by Free-Air CO2 [PDF]

, 2009
The effect of elevated CO2 and nitrogen fertilization on the molecular chemistry of litter of three Populus species and associated soil organic matter (SOM) was investigated by pyrolysis-gas chromatography/mass spectrometry.
Buurman, P., Hoosbeek, M.R., Vermue, E.
core   +7 more sources