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Statements

Subject Item
n2:RIV%2F00216224%3A14310%2F07%3A00022936%21RIV09-MSM-14310___
rdf:type
n8:Vysledek skos:Concept
dcterms:description
Several thousand papers and patents refer since 1970s that activation of acyl, alkoxycarbonyl or aryloxycarbonyl synthons for their coupling with N, O, C nucleophiles may be very effectively realized by an addition of 4 N,N dialkylaminopyridine (DMAP) in catalytic amount [1]. On the other hand, formation of thioureas is not easy for reactions starting from small reactive isothiocyanates (e. g. alkyl, electron donor substituted aryl or heteroaryl isothiocyanates) and/or weakly basic or betaine amines (amino acids). The last mentioned betaines are insoluble in non polar organic solvents and reactions must be frequently carried out for the most part in heterogenous two phase systems or in water organic solvents mixture very often with poor yields. The activation of organic isothiocyanates for reactions with small reactive isothiocyanates and/or weakly basic or betaine amines by DMAP will be demonstrated. Several thousand papers and patents refer since 1970s that activation of acyl, alkoxycarbonyl or aryloxycarbonyl synthons for their coupling with N, O, C nucleophiles may be very effectively realized by an addition of 4 N,N dialkylaminopyridine (DMAP) in catalytic amount [1]. On the other hand, formation of thioureas is not easy for reactions starting from small reactive isothiocyanates (e. g. alkyl, electron donor substituted aryl or heteroaryl isothiocyanates) and/or weakly basic or betaine amines (amino acids). The last mentioned betaines are insoluble in non polar organic solvents and reactions must be frequently carried out for the most part in heterogenous two phase systems or in water organic solvents mixture very often with poor yields. The activation of organic isothiocyanates for reactions with small reactive isothiocyanates and/or weakly basic or betaine amines by DMAP will be demonstrated. Several thousand papers and patents refer since 1970s that activation of acyl, alkoxycarbonyl or aryloxycarbonyl synthons for their coupling with N, O, C nucleophiles may be very effectively realized by an addition of 4 N,N dialkylaminopyridine (DMAP) in catalytic amount [1]. On the other hand, formation of thioureas is not easy for reactions starting from small reactive isothiocyanates (e. g. alkyl, electron donor substituted aryl or heteroaryl isothiocyanates) and/or weakly basic or betaine amines (amino acids). The last mentioned betaines are insoluble in non polar organic solvents and reactions must be frequently carried out for the most part in heterogenous two phase systems or in water organic solvents mixture very often with poor yields. The activation of organic isothiocyanates for reactions with small reactive isothiocyanates and/or weakly basic or betaine amines by DMAP will be demonstrated.
dcterms:title
Formation of Thioureas by Reaction of Isothiocyanates with Weakly Basic or Betaine Amines Promoted by DMAP Formation of Thioureas by Reaction of Isothiocyanates with Weakly Basic or Betaine Amines Promoted by DMAP Vznik thiomočovin reakcí isothiokyanátů s málo bazickými nebo betainovými aminy iniciované DMAP
skos:prefLabel
Formation of Thioureas by Reaction of Isothiocyanates with Weakly Basic or Betaine Amines Promoted by DMAP Vznik thiomočovin reakcí isothiokyanátů s málo bazickými nebo betainovými aminy iniciované DMAP Formation of Thioureas by Reaction of Isothiocyanates with Weakly Basic or Betaine Amines Promoted by DMAP
skos:notation
RIV/00216224:14310/07:00022936!RIV09-MSM-14310___
n4:aktivita
n9:Z
n4:aktivity
Z(MSM 143100011)
n4:dodaniDat
n13:2009
n4:domaciTvurceVysledku
n5:9343350 n5:9756078
n4:druhVysledku
n17:D
n4:duvernostUdaju
n12:S
n4:entitaPredkladatele
n16:predkladatel
n4:idSjednocenehoVysledku
422396
n4:idVysledku
RIV/00216224:14310/07:00022936
n4:jazykVysledku
n20:eng
n4:klicovaSlova
Dimethylaminopyridine thioureas organic isothiocyanate inverted PTC
n4:klicoveSlovo
n10:Dimethylaminopyridine%20thioureas%20organic%20isothiocyanate%20inverted%20PTC
n4:kontrolniKodProRIV
[B5139093552C]
n4:mistoKonaniAkce
Vysoké Tatry
n4:mistoVydani
Bratislava
n4:nazevZdroje
ChemPapers - 57.sjezd chemických společností
n4:obor
n11:CC
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
2
n4:rokUplatneniVysledku
n13:2007
n4:tvurceVysledku
Pazdera, Pavel Šimbera, Jan
n4:typAkce
n15:EUR
n4:zahajeniAkce
2007-09-02+02:00
n4:zamer
n18:MSM%20143100011
s:issn
1336-7242
s:numberOfPages
1
n14:hasPublisher
Slovenská chemická spoločnosť pri SAV
n19:organizacniJednotka
14310