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Chemistry World September 4, 2008 Fred Campbell |
Two catalysts better than one US researchers have cracked a long standing problem in chemical synthesis - the catalytic alpha-alkylation of aldehydes - by combining two catalysts in one pot. |
Chemistry World June 2011 |
Column: Totally Synthetic I've never heard of the Polonovski-Potier reaction, the keystone of a remarkable synthesis by a team led by Tohru Fukuyama at the University of Tokyo, Japan. |
Chemistry World October 22, 2008 Susan Aldridge |
A greener route to amines Researchers based in Israel have developed an easier way to make troublesome primary amines, using a new ruthenium catalyst. |
Chemistry World April 2010 Paul Docherty |
Column: Totally Synthetic When one attempts the first synthesis of a natural product, the set of challenges are often unknown; which intermediates are either inaccessible or unstable, for instance. |
Chemistry World February 2011 Paul Docherty |
Column: Totally Synthetic Although most of the natural products I've discussed have had biological activity at the core of the rationale for their synthesis, most organic chemists will admit that an unusual chemical structure is by far the stronger draw. |
Chemistry World November 2010 Paul Docherty |
Column: Totally Synthetic Perhaps the most familiar (and dull - they do say that familiarity breeds contempt.) chemical reaction to medicinal chemists is the amide bond formation. |
Chemistry World November 27, 2012 Paul Docherty |
Pentalenolactone A methyl ester One team that really gets the Pauson -- Khand reaction or the PKR and all its nuances is that led by Zhen Yang at Peking University in Beijing, China. They recently published a very neat synthesis of the intricate pentalenolactone |
Chemistry World January 2, 2013 Paul Docherty |
Flueggine A One of the most prolific sources of biologically active natural products is traditional medicines -- whose active components can be exceptionally potent. The Euphorbiaceae family of plants is a productive source of medicinal targets, including the Securinega alkaloids. |
Chemistry World November 5, 2013 Paul Docherty |
Marcfortines B & C Natural product isolation is generally a tale of a journey to an obscure or inaccessible location, followed by pulping a harmless plant or marine sponge to get at compounds made by some bacteria hiding out in the core. |
Chemistry World July 1, 2012 Paul Docherty |
Vincorine Cage-structured natural products are some of the most appealing (if perhaps not appetising) targets for organic chemists -- perhaps due to their obvious intricacy of form, but also because of their structural rigidity. |
Chemistry World October 1, 2014 Karl Collins |
Twisting activity from amides When I think of asymmetric aldol reactions, what immediately springs to mind is using boron to control enolate geometry and chiral auxiliaries to impart facial selectivity in the addition step. |
Chemistry World October 2010 Paul Docherty |
Barekoxide and barekol Like most scientists, organic chemists can often obsess about a problem, endlessly pursuing the perfect yield or enantioselectivity, often leading to tears and broken glassware. |
Chemistry World February 21, 2008 Lewis Brindley |
Esters Made Easy with Indium Indium is the basis of a novel catalyst designed to make useful cyclic esters. This catalyst could greatly simplify the production of chiral dihydropyranones, important structural elements in many natural products and pharmaceuticals. |
Chemistry World October 2008 Paul Docherty |
Column: Totally Synthetic Samuel Danishefsky of Columbia University (and the Sloan-Kettering Institute for cancer research), has focused on function rather than family. His many synthetic conquests are unified by their cancer-busting potential. |
Chemistry World March 2011 |
Microwave chemistry - green or not? Microwave-assisted chemistry might not deserve its environmentally friendly reputation, argues Jonathan Moseley |
Chemistry World August 30, 2009 Phillip Broadwith |
C-H oxidation proves its worth US researchers are going against the grain of total synthesis and developing new approaches to complex molecules. |
Chemistry World October 31, 2012 Paul Docherty |
Epicoccin G The class of natural products known as 2,5-diketopiperazines is both broad and synthetically well-trodden. An important sub-class of these targets are found with a sprinkling of sulfur atoms, and seem particularly well-suited to pathogen-bashing. |
Chemistry World March 19, 2009 Manisha Lalloo |
Copper catalysts give meta aromatics UK Researchers have discovered that, simply by using a copper catalyst, they are able to perform tricky substitution reactions at a difficult position on benzene rings |
Chemistry World October 2011 Paul Docherty |
Column: Totally Synthetic Antioxidants are not only found in human cells, but also in bacterial cell walls - and a good example is synechoxanthin. |
Chemistry World August 2008 Paul Docherty |
Column: Totally Synthetic Impersonating nature isn't easy, and biomimetic syntheses are remarkable in two senses. |
Chemistry World July 23, 2015 Richard Massey |
Photoredox catalysis mechanisms seen in new light A debate over whether photoredox-catalyzed reactions proceed via chain processes may now be settled, thanks to new mechanistic insight brought to light by scientists in the US. |
Chemistry World January 13, 2011 Sarah Corcoran |
Unclogging the problems of flow chemistry US scientists have found a way to stop solid byproducts clogging channels in continuous flow reactors, a problem that has hampered their progress for use in manufacturing pharmaceuticals. |
Chemistry World September 20, 2007 Lewis Brindley |
New Catalyst Rings the Changes Organic chemists in the US have developed a method to control the stereochemistry of a useful intramolecular Diels-Alder reaction. |
Chemistry World December 20, 2007 Richard Van Noorden |
Off-the-Peg Organic Synthesis Goes Commercial Chemists have created an efficient way to make small molecules by repeatedly using just one coupling reaction to clip together pre-prepared chemical fragments is going commercial. |
Chemistry World December 2008 Paul Docherty |
Column: Totally Synthetic Pseudolaric acid B: regular readers of this column's online incarnation will have noticed that this is the second appearance for this particular synthesis. |
Chemistry World July 2009 Paul Docherty |
Column: Totally Synthetic When it comes to making large natural products, different researchers will often propose identical 'end-game' strategies to complete the target. |
Chemistry World August 16, 2009 Tom Bond |
Catalyst free carbon-carbon bond formation The method offers an environmentally friendly way to form one of the most important bonds in organic synthesis. |
Chemistry World August 2010 Paul Docherty |
Column: Totally Synthetic The total synthesis of macrolide targets is now a relatively mature field. Any synthesis that bucks these trends grabs attention, with a recent publication of dictyosphaeric acid A by Richard Taylor's team at the University of York, UK, a case in point. |
Chemistry World September 4, 2012 Derek Lowe |
Light in the Lab We organic chemists do terrible things to our molecules. How about dissolving the starting materials up in a flask, shining a light into the mixture and coming back later to find it transformed into your product? That's photochemistry. |
Chemistry World May 29, 2013 Paul Docherty |
Pactamycin A member of a 'rival' field stating that a molecule is 'inaccessible by synthetic organic chemistry' is like a red rag to the proverbial bull. This challenge surrounds analogs of pactamycin, a complex cyclopentane-based target with an exceptionally potent biological profile. |
Chemistry World October 2009 Paul Docherty |
Column: Totally Synthetic It's been a while since I've seen such a battle for the 'first publication' of a molecule as has recently been witnessed for haplophytine. |
Chemistry World January 9, 2011 Mike Brown |
Mild route to organohalides using visible light A greener way to convert alcohols to their corresponding bromides and iodides using visible light and without generating wasteful by-products has been developed by US researchers. |
Chemistry World January 29, 2014 |
Organic matter: Indoxamycins A, C and F In 2012, Erick Carreira's group in Zurich reported the total synthesis of indoxamycin B. 1 This 24-step organometallic tour de force resulted in a structural reassignment and set the bar rather high for future work on this family. |
Chemistry World November 3, 2008 Simon Hadlington |
Organic synthesis set for auto-pilot Peptides are routinely made by machines that couple together amino acid components. Could organic synthesis ever get this simple? |
Chemistry World September 2009 Paul Docherty |
Column: Totally Synthetic Maduropeptin chromophore (the active component of a chromopore-protein complex, noted as for its potent antitumor and antibiotic activity) is built of two distinct domains |
Chemistry World January 2009 Paul Docherty |
Column: Totally Synthetic In the search for new biologically active natural products, sometimes a team isolating a new compound family will be lucky enough to find one active member. |
Chemistry World January 17, 2014 Katia Moskvitch |
Life may have begun in a tiny water droplet Chemical reactions run much faster and more efficiently when they take place in tiny droplets rather than in freestanding water -- such as a puddle or a lake, say researchers. |
Chemistry World November 5, 2015 Emma Stoye |
Unnatural nanoreactor puts click reaction in the spotlight A protein 'nanoreactor' that can monitor a click chemistry reaction at the level of single molecules has been created by adding an unnatural amino acid to a nanopore. |
Chemistry World January 2010 Paul Docherty |
Column: Totally Synthetic Of all the natural product classes, the steroid family are perhaps the most prevalent in the public consciousness; from cholesterol to testosterone, their infamy inflates the 'science bit' in countless advertisements. |
Chemistry World February 27, 2012 Phillip Broadwith |
Bending carbonyl reactivity rules Belgian chemists have uncovered a method to bypass the standard reactivity hierarchy of carbonyl compounds, allowing a ketone or ester to be reduced in the presence of a more reactive aldehyde. |
Chemistry World February 4, 2011 Elinor Richards |
Strychnine in just six steps Strychnine, best known as a poison but also used medicinally as a stimulant, can now be synthesised in just six steps, say US scientists. |
Chemistry World January 2012 Paul Docherty |
Column: Totally Synthetic What a Japanese team demonstrates in this synthesis of dragmacidin D is the state of the art, uniting all the key fragments using C-H bond couplings. |
Chemistry World May 8, 2014 |
Mandelalide A The recent synthesis of the proposed structure of mandelalide A is a good example of a well-designed route that seamlessly integrates some cutting-edge chemistry. |
Chemistry World May 22, 2015 James Urquhart |
Complex amines made easy (and cheap) Phil Baran's lab at the Scripps Research Institute, La Jolla, has come up with a protocol that repurposes two readily available and inexpensive feedstock building blocks; olefins and nitroarenes, via iron-catalysed cross-coupling. |
Chemistry World September 25, 2013 Derek Lowe |
What's the use? Work that claims to be useful in chemistry often ends up teetering on the edges of the Canyons of Triviality or Decadence. |
Chemistry World January 25, 2013 Derek Lowe |
Name reactions: how does the label stick? Some of these names go back to the 19th century, and many more of them come from the first decades of the 20th. Once in a while, I wonder if the tradition is dying out. Are we still naming chemical reactions after their discoverers? |
Chemistry World September 2010 Paul Docherty |
Column: Totally Synthetic After a target has been synthesised, and the question of 'can we make this?' has been answered, perhaps the most important remaining question is 'how did nature make it?' |
Chemistry World August 2011 Paul Docherty |
Column: Totally Synthetic Yuanhuapin, a fabulously complex member of the daphnane diterpene orthoester class of natural products, bears an astonishing twelve contiguous stereogenic centres around its seven rings (look closely!). |
Chemistry World February 20, 2013 Amy Middleton-Gear |
Ohmic heating for efficient green synthesis Portuguese scientists have developed a new ohmic-heating reactor for organic syntheses on water, or chemistry using an aqueous suspension of the reactants. |
Chemistry World November 2010 |
Carbon Couplers Take the Prize Three giants of organic chemistry, who pioneered palladium-catalysed cross coupling reactions, have shared this year's Nobel prize. |