2013
DOI: 10.1016/j.tetlet.2013.03.023
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A one-pot, three-component regiospecific synthesis of dispiropyrrolidines containing a thiophenone ring via 1,3-dipolar cycloaddition reactions of azomethine ylides

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Cited by 29 publications
(6 citation statements)
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“…Unsaturated thiophenone dipolarophiles 138 were reacted with azomethine ylides, generated in situ from sarcosine 9 and isatins 1, to produce the corresponding cycloadducts (Scheme 50). 96 The cycloaddition reaction was found to be highly regio-and diastereoselective. …”
Section: Scheme 49mentioning
confidence: 99%
“…Unsaturated thiophenone dipolarophiles 138 were reacted with azomethine ylides, generated in situ from sarcosine 9 and isatins 1, to produce the corresponding cycloadducts (Scheme 50). 96 The cycloaddition reaction was found to be highly regio-and diastereoselective. …”
Section: Scheme 49mentioning
confidence: 99%
“…24,25 For example, Yan and co-workers reported the synthesis of spiro[indoline-3,3′-pyrrolo[1,2a]isoquinolines] by a 1,3-dipolar cycloaddition reaction of N-phenacylquinolinium bromides with 3-phenacylideneoxindoles as dipolarophiles. 24 Because of the biological importance of pyrrolo[2,1a]isoquinolines and quinoxaline structures, and in continuation of related studies and our growing interest in developing 1,3-dipolar cycloaddition reactions, [26][27][28] we decided to synthesize spiroheterocycles containing both pyrrolo[2,1a]isoquinoline and quinoxaline moieties. To the best of our knowledge, this is the first report of a 1,3-dipolar cycloaddition of N-phenacylquinolinium bromides with 1-aryl-2-(11H-indeno[1,2-b]quinoxalin-11-ylidene)ethanones in which electron-deficient alkenes act as dipolarophiles to give functionalized spiropyrrolo[2,1-a]isoquinoline derivatives bearing four stereogenic centers.…”
Section: Letter Syn Lettmentioning
confidence: 99%
“…2022, 12, 360 [12], antimycobacterial [13], antimicrobial and anticancer activities (Figure 1) [14-17 thermore, they are also known for acetylcholinesterase inhibition [18,19]. Among the current methodologies for the synthesis of spiro[oxindole-2,3′-p dine] derivatives, multicomponent (3+2) cycloaddition reactions (MCRs) of electron cient exocyclic alkenes with azomethine ylides, generated in situ by decarboxylativ densation of isatin derivatives with α-aminoacids, have emerged as one of the mos erful tools (Scheme 1, Equation ( 1)) [20][21][22][23][24][25][26][27]. However, a thorough literature survey decarboxylative process reveals that L-valine received only little attention as a comp in the formation of azomethine ylides (Scheme 1, Equation ( 2)).…”
Section: Introductionmentioning
confidence: 99%