Vaibhav Pravinchandra Mehta

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The application of a palladium-catalyzed Cu(I)-mediated Liebeskind-Srogl protocol for the decoration of the 2(1H)-pyrazinone scaffold resulted in significantly improved yields and rates when performed under microwave irradiation with simultaneous cooling.
An unprecedented desulfitative Sonogashira-type cross-coupling protocol is exemplified by the synthesis of substituted 5-chloro-3-alkynylpyrazinones from the corresponding 5-chloro-3-(phenylsulfanyl) pyrazin-2(1H)-ones. The applicability of the method is extended to solid-phase linked pyrazin-2(1H)-ones as well as to some oxazinones, pyrazines, and phenyl(More)
A novel and convenient procedure for the synthesis of asymmetrically tri- and tetrasubstituted pyrazines starting from para-methoxybenzyl-protected 3,5-dichloro-2(1H)-pyrazinones was elaborated. The key step is the conversion of the intermediate para-methoxybenzyl-protected thiopyrazinone upon treatment with MeI/I(2), into a pyrazine, rendering the chlorine(More)
Cycloaddition reactions belong to one of the most well-investigated and widely used reactions in synthetic organic chemistry for the construction of (hetero)cyclic compounds in a single-step operation. In this tutorial review, a select number of examples of some [3+2] cycloadditions, i.e. for 1,2,3-triazole formation, as well as of some [4+2] and [2+2](More)
Among the fundamental transformations in the field of synthetic organic chemistry, transition-metal-catalyzed reactions provide some of the most attractive methodologies for the formation of C-C and C-heteroatom bonds. As a result, the application of these reactions has increased tremendously during the past decades and cross-coupling reactions became a(More)
A novel microwave-assisted, highly efficient protocol for the synthesis of hitherto unknown aza-analogues of (-)-Steganacin, a naturally occurring bisbenzocyclooctadiene lignan lactone with potent antileukemic and tubulin polymerization inhibitory activity, has been developed. Focused microwave irradiation is demonstrated to be highly beneficial in(More)
An unprecedented, diversity-oriented strategy for the generation of 6,7-dihydro-5H-dibenzo[c,e]azepines and 5,6,7,8-tetrahydrodibenzo[c,e]azocines by a microwave-assisted copper-catalyzed intramolecular A(3)-coupling reaction is presented.
An unprecedented microwave-assisted multicomponent strategy has been elaborated for the fast, efficient, and diastereoselective generation of the dibenzo[c,e]azepinone scaffold. The generated compounds were evaluated for their bioactivity.
Transition metal-catalyzed C-C bond formations have been well studied over the last four decades. An improved mechanistic understanding of such reactions has helped chemists to develop further improvements, modifications and even new reactions. In the area of transition metal-catalyzed cross-coupling reactions the C-S bond cleaving reactions have attracted(More)