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Statements

Subject Item
n2:RIV%2F00216224%3A14310%2F07%3A00022352%21RIV10-MSM-14310___
rdf:type
n8:Vysledek skos:Concept
dcterms:description
Now we have found a new cyclization reaction of beta-allenyloxime (2) under mild conditions in boiling methanol leading to new five-membered heterocycles (3,4) [5]. When oxime (2) was treated with NaOH in methanol a new nitrone (3) was formed in 77% yield. On the other hand in the mixture of NaOH and NaBH4 in methanol pyrrolidine (4) was obtained in 66% yield. The same product (4) was also obtained from nitrone (3) when treated in the presence of NaOH with NaBH4. structure of both products was unambiguously confirmed by X-Ray analysis of their picrates. The structure and activity of nitrone (3) was proved by its reactivity with dipolarophiles (PhNCO, dimethyl acetylenedicarboxylate). Now we have found a new cyclization reaction of beta-allenyloxime (2) under mild conditions in boiling methanol leading to new five-membered heterocycles (3,4) [5]. When oxime (2) was treated with NaOH in methanol a new nitrone (3) was formed in 77% yield. On the other hand in the mixture of NaOH and NaBH4 in methanol pyrrolidine (4) was obtained in 66% yield. The same product (4) was also obtained from nitrone (3) when treated in the presence of NaOH with NaBH4. structure of both products was unambiguously confirmed by X-Ray analysis of their picrates. The structure and activity of nitrone (3) was proved by its reactivity with dipolarophiles (PhNCO, dimethyl acetylenedicarboxylate).
dcterms:title
New way to cyclic nitrones by cyclization of allenyloximes New way to cyclic nitrones by cyclization of allenyloximes
skos:prefLabel
New way to cyclic nitrones by cyclization of allenyloximes New way to cyclic nitrones by cyclization of allenyloximes
skos:notation
RIV/00216224:14310/07:00022352!RIV10-MSM-14310___
n3:aktivita
n7:Z
n3:aktivity
Z(MSM 143100011)
n3:dodaniDat
n13:2010
n3:domaciTvurceVysledku
n16:2333368 n16:8417377 n16:7689039
n3:druhVysledku
n18:D
n3:duvernostUdaju
n6:S
n3:entitaPredkladatele
n10:predkladatel
n3:idSjednocenehoVysledku
437259
n3:idVysledku
RIV/00216224:14310/07:00022352
n3:jazykVysledku
n17:eng
n3:klicovaSlova
allenyloximes; cyclic nitrones; cycloaddition reactions
n3:klicoveSlovo
n5:cycloaddition%20reactions n5:cyclic%20nitrones n5:allenyloximes
n3:kontrolniKodProRIV
[E9EE5FC12CE6]
n3:mistoKonaniAkce
Tihani, Maďarsko
n3:mistoVydani
Budapest
n3:nazevZdroje
Book of Abstracts - XII. Blue Danube Symposium on Heteroyclic Chemistry
n3:obor
n21:CC
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n13:2007
n3:tvurceVysledku
Potáček, Milan Buchlovič, Marian Man, Stanislav
n3:typAkce
n20:WRD
n3:zahajeniAkce
2007-06-10+02:00
n3:zamer
n4:MSM%20143100011
s:numberOfPages
1
n9:hasPublisher
Chemical Research Center, Hungarian Academy of Sciences and Eotvos Lorand University
n11:isbn
978-963-7067-15-0
n15:organizacniJednotka
14310