- Green synthesis of (R)-terbutaline for recyclable catalytic asymmetric transfer hydrogenation in ionic liquids
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We synthesize optically active (R)-terbutaline 2, which is an anti-asthmatic drug, through recyclable catalytic asymmetric transfer hydrogenation (RCATH). Various chloroketones 4 were prepared and RCATH was performed on them. The products exhibit moderate
- Uchimoto, Hitomi,Ikeda, Miki,Tanida, Saori,Ohhashi, Kayo,Chihar, Yoshiko,Shigeta, Takashi,Arimitsu, Kenji,Yamashit, Masayuki,Nishide, Kiyoharu,Kawasaki, Ikuo
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p. 389 - 395
(2017/04/14)
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- High-Boron-Content Porphyrin-Cored Aryl Ether Dendrimers: Controlled Synthesis, Characterization, and Photophysical Properties
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The synthesis and characterization of a set of poly(aryl ether) dendrimers with tetraphenylporphyrin as the core and 4, 8, 16, or 32 closo-carborane clusters are described. A regioselective hydrosilylation reaction on the allyl-terminated functions with c
- Cabrera-González, Justo,Xochitiotzi-Flores, Elba,Vi?as, Clara,Teixidor, Francesc,García-Ortega, Héctor,Farfán, Norberto,Santillan, Rosa,Parella, Teodor,Nú?ez, Rosario
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p. 5021 - 5031
(2015/05/27)
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- Thermally activated, single component epoxy systems
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A single component epoxy system in which the resin and hardener components found in many two-component epoxies are combined onto the same molecule is described. The single molecule precursor to the epoxy resin contains both multiple epoxide moieties and a
- Unruh, David A.,Pastine, Stefan J.,Moreton, Jessica C.,Frechet, Jean M. J.
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experimental part
p. 6318 - 6325
(2012/06/18)
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- Fabrication of self-assembled dendron monolayers
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A dendron (2) comprising a focal point (4) and a plurality of fluorinated end groups (9) is disclosed, including one having a thiol, a silane, a carboxylic acid, a phosphonate or another moiety at the focal point suitable for chemisorption to a substrate
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Page/Page column 7-10
(2009/05/29)
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- Synthesis of supercritical carbon dioxide soluble perfluorinated dendrons for surface modification
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(Chemical Equation Presented) The rational design, synthesis, and characterization of a series of novel perfluorinated dendrons 14a,b, 25a,b, 26a,b, and 18 are described. The dendrimers were designed to have a thiol at the focal point for attachment to a gold surface to enable the fabrication of self-assembled monolayers (SAMs). Perfluorinated tails were attached to the periphery to provide solubility in supercritical carbon dioxide, and to increase the hydrophobicity and the stability of self-assembled monolayers formed. Mitsunobu reactions were utilized to provide high-yielding steps allowing large-scale production of the novel dendrimers.
- Luscombe, Christine K.,Proemmel, Steffen,Huck, Wilhelm T. S.,Holmes, Andrew B.,Fukushima, Hitoshi
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p. 5505 - 5513
(2008/02/09)
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- Incorporation of functional guest molecules into an internally functionalizable dendrimer through olefin metathesis
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A poly(aryl ether) dendrimer bearing 22 allyl groups throughout the interior of the molecule has been prepared using a convergent synthetic approach. The internal functionalities of this dendrimer can be used to attach small molecule guests to the interio
- Liang, Catherine O.,Frechet, Jean M. J.
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p. 6276 - 6284
(2008/02/02)
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- Helical porous protein mimics self-assembled from amphiphilic dendritic dipeptides
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This manuscript reports the synthesis and the self-assembly of (4-3,4,5-3,5)nG2-CH2-Boc-L-Tyr-L-Ala-OMe dendritic dipeptides (n = 12, 16). These dendritic dipeptides self-assemble both in solution and in solid states into helical por
- Percec, Virgil,Dulcey, Andres,Peterca, Mihai,Ilies, Monica,Miura, Yoshiko,Edlund, Ulrica,Heiney, Paul A.
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p. 472 - 482
(2007/10/03)
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- Cross-linking dendrimers with allyl ether end-groups using the ring-closing metathesis reaction
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A third generation Frechet-type dendrimer containing 24 allyl ether end-groups was synthesized, cross-linked using the ring-closing metathesis (RCM) reaction, and the core was removed hydrolytically without significant fragmentation. The results are analo
- Elmer, Stephanie L.,Zimmerman, Steven C.
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p. 7363 - 7366
(2007/10/03)
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- Rapid synthesis of dendrimers based on calix[4]resorcinarenes
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Calix[4]resorcinarenes are phenolic macrocyclic compounds, and readily available from resorcinols and aldehydes. We were interested in calix[4]resorcinarenes as highly functionalized core molecules for the rapid synthesis of dendrimers because of their ea
- Yamakawa, Yoshitaka,Ueda, Mitsuru,Nagahata, Ritsuko,Takeuchi, Kazuhiko,Asai, Michihiko
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p. 4135 - 4139
(2007/10/03)
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- Induction of liquid crystallinity by host-guest interactions
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A molecular clip is described which binds aromatic guests by an induced fit mechanism. It contains twelve long aliphatic chains and can evoke liquid-crystalline properties in a variety of molecules, including polymers and porphyrins, by a process of molecular recognition.
- Van Nunen, Johanna L. M.,Folmer, Brigitte F. B.,Nolte, Roeland J. M.
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p. 283 - 291
(2007/10/03)
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- Trifluoroacetic acid catalysed Claisen rearrangement: Synthesis of 3-methyl-3,4-dihydro-5-hydroxyisocoumarin and furodihydroisocoumarin
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Trifluoroacetic acid catalysed Claisen rearrangement of allyl m-allyloxybenzoate (II) and methyl 3,5-diallyloxybenzoate (V) in refluxing TFA gives III and VI respectively.However, Claisen rearrangement of V in refluxing N,N-dimethylaniline followed by cyc
- Bhide, B H,Akolkar, V D,Prabhu, V G
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p. 143 - 147
(2007/10/02)
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