Academic literature on the topic 'Catalysed Iodination'

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Journal articles on the topic "Catalysed Iodination"

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SHANMUGATHASAN, SAKTHI, CLAIRE K. JOHNSON, CHRISTINE EDWARDS, E. KEITH MATTHEWS, DAVID DOLPHIN, and ROSS W. BOYLE. "Regioselective halogenation and palladium-catalysed couplings on 5,15-diphenylporphyrin." Journal of Porphyrins and Phthalocyanines 04, no. 03 (2000): 228–32. http://dx.doi.org/10.1002/(sici)1099-1409(200004/05)4:3<228::aid-jpp199>3.0.co;2-7.

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5,15-Diphenylporphyrin was regiospecifically halogenated in high yield to give 5-iodo-15-bromo-10,20-diphenylporphyrin, which was then subjected to Heck and Stille-type coupling reactions to form unsymmetrically substituted porphyrins. The regioselectivity of the iodination of diphenylporphyrins and subsequent formation of amphiphilic porphyrins via palladium-based methodology was also studied. The utility of this method for the synthesis of photodynamic sensitisers has been demonstrated on AR4-2J rat pancreatic carcinoma cells.
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Jeffery, Tuyet. "Copper(I)- and phase-transfer-catalysed iodination of terminal alkynes." Journal of the Chemical Society, Chemical Communications, no. 14 (1988): 909. http://dx.doi.org/10.1039/c39880000909.

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Kootstra, PR, R. Wever, and JJM de Vijlder. "Thyroid peroxidase: kinetics, pH optima and substrate dependency." Acta Endocrinologica 129, no. 4 (1993): 328–31. http://dx.doi.org/10.1530/acta.0.1290328.

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The oxidation of iodide, guaiacol and 2, 2′-azino-di[3-ethyl-benzthiazoline-(6)-sulphonic acid] and the iodination of tyrosyl residues in bovine serum albumin, catalysed by partly purified thyroid peroxidase, were studied. The enzyme showed pH optima with all electron donors. With the exception of guaiacol, the positions of the pH optima depended upon both the electron donor and hydrogen peroxide concentrations. With increased hydrogen peroxide concentrations the optima shifted to lower pH, and with increased iodide concentration to higher pH. For monoiodotyrosine (MIT) formation in bovine ser
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Zhao, Xia, Fang Ding, Jingyu Li, et al. "Direct C–H iodination of 1,3-azoles catalysed by CuBr 2." Tetrahedron Letters 56, no. 3 (2015): 511–13. http://dx.doi.org/10.1016/j.tetlet.2014.12.029.

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Banerjee, R. K., A. K. Bose, T. K. Chakraborty, S. K. De, and A. G. Datta. "Peroxidase-catalysed iodotyrosine formation in dispersed cells of mouse extrathyroidal tissues." Journal of Endocrinology 106, no. 2 (1985): 159–65. http://dx.doi.org/10.1677/joe.0.1060159.

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ABSTRACT A method has been developed for the isolation of cells, high in iodine uptake and peroxidase activity, from the stomach and submaxillary gland of mice. The isolated cells could produce protein-bound monoiodotyrosine, di-iodotyrosine and an unknown iodocompound. The reactions were catalysed by peroxidase and were sensitive to antithyroid drugs and haemoprotein inhibitors but were insensitive to TSH. In-vitro iodination of stomach or submaxillary soluble proteins with the respective peroxidase yielded similar iodocompounds while thyroxine was produced when thyroglobulin was used instead
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Ge, Shao-peng, Xiao-hong Zhang, Jiang-sheng Han, and Ping Zhong. "Copper-Catalysed Direct C–H Bond Oxidative Acetoxylation and Iodination of Indoles." Journal of Chemical Research 36, no. 6 (2012): 356–59. http://dx.doi.org/10.3184/174751912x13360637793465.

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Arcadi, Antonio, Orazio Attanasi, Stefano Berretta, Gabriele Bianchi, and Paolino Filippone. "Synthesis of New Cardanol Derivatives through Combined Iodination/Palladium-Catalysed Cross-Coupling Reactions." Synthesis 2006, no. 15 (2006): 2523–30. http://dx.doi.org/10.1055/s-2006-942434.

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Goswami, Papori, Shahzad Ali, Md Musawwer Khan та Abu Taleb Khan. "Selective and effective oxone-catalysed α-iodination of ketones and 1,3-dicarbonyl compounds in the solid state". Arkivoc 2007, № 15 (2007): 82–89. http://dx.doi.org/10.3998/ark.5550190.0008.f09.

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Stavber, Gaj, Jernej Iskra, Marko Zupan, and Stojan Stavber. "Aerobic oxidative iodination of ketones catalysed by sodium nitrite “on water” or in a micelle-based aqueous system." Green Chemistry 11, no. 8 (2009): 1262. http://dx.doi.org/10.1039/b902230a.

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Foddy, L., S. C. Stamatoglou, and R. C. Hughes. "An endogenous carbohydrate-binding protein of baby hamster kidney (BHK21 C13) cells. Temporal changes in cellular expression in the developing kidney." Journal of Cell Science 97, no. 1 (1990): 139–48. http://dx.doi.org/10.1242/jcs.97.1.139.

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Asialofetuin (ASF) coupled to Sepharose has been used to isolate a Mr 30,000 protein from Triton X-100 extracts of the baby hamster kidney cell line BHK21 C13. Binding to ASF-Sepharose was specific for terminal beta-galactosyl residues. The lectin requires detergent for optimal solubilization and binding is independent of Ca2+ or reducing reagents. The lectin was labelled in a lactoperoxidase-catalysed iodination of intact BHK21 C13 cells, suggesting that it is associated with the cell surface. Antibodies to the lectin identify in Western blotting cross-reactive components in established cell
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Book chapters on the topic "Catalysed Iodination"

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Mukherjee, S. "α-Iodination of Carbonyl Compounds." In Lewis Base and Acid Catalysts. Georg Thieme Verlag KG, 2012. http://dx.doi.org/10.1055/sos-sd-204-00104.

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Taber, Douglass. "Stereocontrolled Construction of Arrays of Stereogenic Centers." In Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0043.

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The Sharpless osmium-catalyzed asymmetric dihydroxylation is widely used. Lawrence Que, Jr. of the University of Minnesota designed (Angew. Chem. Int. Ed. 2008, 47, 1887) a catalyst with the inexpensive Fe that appears to be at least as effective, converting 1 to 2 in high ee. In an alternative approach, Bernd Plietker of the Universität Stuttgart used (J. Org. Chem. 2008, 73, 3218) chiral auxiliary control to direct dihydroxylation. The diastereomers of 4 were readily differentiated. Defined arrays of stereogenic centers can also be constructed by homologation. Armando Córdova of Stockholm Un
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Taber, Douglass. "Functionalization of C-H Bonds: The Baran Synthesis of Dihydroxyeudesmane." In Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0016.

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Arumugam Sudalai of the National Chemical Laboratory, Pune reported (Tetrahedron Lett. 2008, 49, 6401) a procedure for hydrocarbon iodination. With straight chain hydrocarbons, only secondary iodination was observed. Chao-Jun Li of McGill University uncovered (Adv. Synth. Cat. 2009, 351, 353) a procedure for direct hydrocarbon amination, converting cyclohexane 1 into the amine 3. Justin Du Bois of Stanford University established (Angew. Chem. Int. Ed. 2009, 48, 4513) a procedure for alkane hydroxylation, converting 4 selectively into the alcohol 6. The oxirane 8 usually also preferentially ozi
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Taber, Douglass. "The Betzer and Ardisson Synthesis of (+)-Discodermolide." In Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0085.

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( + )-Discodermolide 3, a potent anticancer agent that works synergistically with taxol, may yet prove to be clinically effective. For the synthetic material to be affordable, a highly convergent synthesis is required. Jean-François Betzer and Janick Ardisson of the Université de Cergy- Pontoise have described (Angew. Chem. Int. Ed. 2007, 46, 1917) such a synthesis, coupling 1 and 2. A central feature of their approach was the repeated application of the inherently chiral secondary organometallic reagent 5. The first use of 5 was the addition to the aldehyde 4. The product 6 was ozonized, and
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Taber, Douglass. "Synthesis of Heteroaromatics." In Organic Synthesis. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199764549.003.0066.

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Yasutaka Ishii of Kansai University has developed (J. Org. Chem. 2007, 72, 8820) a novel route to furans, using a mixed-metal catalyst to effect condensation of an aldehyde or 1,3 diketone such as 1 with an acceptor such as 2 to give the 3-furoate 3. In a complementary approach, Yong-Min Liang of Lanzhou University has found (J. Org. Chem. 2007, 72, 10276) that diazoacetate 5 will condense with an alkynyl ketone to give the 2-furoate 6. David W. Knight of Cardiff University has shown (Tetrahedron Lett. 2007, 48, 7709) that an alkynyl diol such as 7, readily available by dihydroxylation of the
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Taber, Douglass F. "The Fürstner Synthesis of Amphidinolide F." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0090.

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The amphidinolides, having zero, one, or (as exemplified by amphidinolide F 3) two tetrahydrofuran rings, have shown interesting antineoplastic activity. It is a tribute to his development of robust Mo catalysts for alkyne metathesis that Alois Fürstner of the Max-Planck-Institut für Kohlenforschung Mülheim could with confidence design (Angew. Chem. Int. Ed. 2013, 52, 9534) a route to 3 that relied on the ring-closing metathesis of 1 to 2 very late in the synthesis. Three components were prepared for the assembly of 1. Julia had already reported (J. Organomet. Chem. 1989, 379, 201) the prepara
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Taber, Douglass F. "Substituted Benzenes: The Li Synthesis of Rubriflordilactone A." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0063.

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Cheol-Hong Cheon of Korea University (J. Org. Chem. 2014, 79, 7277) and Toshiyuki Kamei and Toyoshi Shimada of the Nara National College of Technology (Tetrahedron Lett. 2014, 55, 4245) described the ring bromination of arene boronates. The boronate can then be removed, enabling the conversion of 1 to 2. Yu Rao of Tsinghua University constructed (Chem. Commun. 2014, 50, 15037) the sulfone 5 by coupling the arenes 3 and 4 with K2S2O8. Igor Larrosa of Queen Mary University of London assembled (Chem. Sci. 2014, 5, 3509) the biphenyl 8 by arylating 6 with the iodide 7. Guy Bertrand of the Universi
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Taber, Douglass F. "The Hoveyda Synthesis of Disorazole C1." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0102.

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Disorazole C1 3, isolated from fermentation of the myxobacterium Sorangium cellu­losum, shows antifungal and anticancer activity. Amir H. Hoveyda of Boston College applied (J. Am. Chem. Soc. 2014, 136, 16136) recent advances in alkene metathesis from his group to enable the efficient assembly of 2 and so of 3. The ester 1 was assembled from the alcohol 11 and the acid 18. The preparation of 11 began with the enantioselective addition of 5 to 4 to give 6 and then 7, as described by Kalesse (Angew. Chem. Int. Ed. 2010, 49, 1619). Leighton allylation led to 8, that was then coupled with 9 to give
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Taber, Douglass F. "The Njardarson Synthesis of Vinigrol." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0086.

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The diterpene vinigrol 3, isolated from Virgaria nigra F-5408, is a tumor necrosis factor (TNF) inhibitor. Jon T. Njardarson of the University of Arizona envisioned (Angew. Chem. Int. Ed. 2013, 52, 8648) that Wharton fragmentation of 1 could deliver 2, suit­ably functionalized for elaboration to 3. The tetracyclic 1 was prepared by the triply-convergent assembly of the phenol 11. Addition of allyl magnesium bromide to 4 proceeded with high regio- and geomet­ric selectivity, to give an alcohol that was methylated, then iodinated with inversion to give 5. Condensation of the phosphonate 7 with t
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