2016
DOI: 10.1039/c6ra20676j
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Microwave-mediated Newman–Kwart rearrangement in water

Abstract: For the first time the unimolecular Newman–Kwart rearrangement is performed in pure water.

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Cited by 7 publications
(5 citation statements)
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“…The analytic data are in accordance with the literature. 30 (E)-S-(2-Methoxy-4-(prop-1-en-1-yl)phenyl) N,N-Dimethylcarbamothioate (14). Conversion: 49% (Condition A).…”
Section: ■ Results and Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…The analytic data are in accordance with the literature. 30 (E)-S-(2-Methoxy-4-(prop-1-en-1-yl)phenyl) N,N-Dimethylcarbamothioate (14). Conversion: 49% (Condition A).…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…Lately a series of developments have attracted renewed attention to the NKR. A Pd-catalyzed NKR was described where the rearrangement proceeds at 100 °C using catalytic Pd­( t -Bu 3 P) 2 (Figure B) . Here, substrates with electron-withdrawing groups react faster than substrates with electron-donating groups, nonetheless high yields were obtained for both classes.…”
Section: Introductionmentioning
confidence: 99%
“…Since the appearance of the first reports in 1966, a number of studies have therefore dealt with the development of protocols having milder reaction conditions. Important parts of this development are the exploration of the microwave-assisted NKR, and of the use of a continuous flow reactor under supercritical conditions. , Other approaches are based on the use of catalysts in order to lower reaction temperatures. In some examples, the addition of catalytic amounts of BF 3 ·OEt 2 helped to lower the reaction temperature and to improve the yields, whereby the catalytic effect did not turn out to be general .…”
mentioning
confidence: 99%
“…One hurdle to exploring thiol-equipped MOF solids is the synthesis of the organic linkers. For example, the thiol group can be derived from the phenol group via the Newman–Kwart rearrangement, but this usually involves harsh high-temperature conditions, e.g., 200 °C; the lower-temperature protocols, e.g., enabled by Pd or photocatalysts, remain to be tested in linker synthesis. Serious drawbacks also exist in reductive and nucleophilic , dealkylation of thioethers, as these treatments are often incompatible with the donor groups, e.g., carboxyl, for MOF construction.…”
Section: Resultsmentioning
confidence: 99%