19541-99-2Relevant academic research and scientific papers
Benzazoles 5*. synthesis and arylsulfonylation of 1-hydroxymethylbenzimidazole
Abdireimov,Mukhamedov,Aiymbetov,Shakhidoyatov
, p. 458 - 461 (2012/10/29)
1-Hydroxymethylbenzimidazole was synthesized by the reaction of benzimidazole with formaldehyde. Arylsulfonylation of the former in the presence of triethylamine occurred anomalously with deformylation to give 1-arylsulfonylbenzimidazoles in place of the
Highly selective recognition of a-chiral primary organoammonium ions by C3-symmetric peptide receptors
Schnopp, Markus,Haberhauer, Gebhard
experimental part, p. 4458 - 4467 (2010/02/16)
A straightforward synthesis of C3-symmet:ric, imidazole-containing, macrocyclic peptides with different binding arms is presented, The chirality of the backbone and the selection of adequate receptor arms make these systems highly selective receptors for α-chiral primary organoammonium ions. Furthermore, the receptors have the ability to discriminate between enantiomeric guests with selectivity ratios of up to 87:13, The binding constants and the selectivity ratios were estimated by standard 1H NMR titration techniques in CDCl3.
Pyrazolopyrimidines as therapeutic agents
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, (2008/06/13)
The present invention is directed to pyrazolopyrimidine derivatives of formula (I) wherein the substituents are defined herein, which are useful as kinase inhibitors and as such are useful for affecting angiogenesis and diseases and conditions associated with angiogenesis.
Pyrazolopyrimidines as therapeutic agents
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, (2008/06/13)
The present invention provides compounds of Formula I, including pharmaceutically acceptable salts and/or prodrugs thereof, where G, R2, and R3 are defined as described herein.
Application of ultrasound irradiation for the reactions of N-hydroxymethylation
Zhong,Song,Peng,Qian
, p. 3801 - 3807 (2007/10/03)
A convenient and high yield method for the N-hydroxymethylation of substituted phthalimide and benzimidazole under ultrasound irradiation is reported.
A New Synthetic Method for the 2-Substitution of N-Unsubstituted Benzimidazoles: Formaldehyde as a Versatile Protecting Agent for Heterocyclic NH
Katritzky, Alan R.,Akutagawa, Kunihiko
, p. 2949 - 2952 (2007/10/02)
N-Unsubstituted benzimidazoles 1 are readily converted in a one-pot sequence into 2-substituted derivatives 2 with good overall yields.N-Protection with formaldehyde and lithiation with lithium N,N-diisopropylamide (LDA), n-butyllithium, or tert-butyllithium gives the dilithiohemiaminals 6, which readily react with a range of electrophiles at the 2-carbon.The 2-substituted 1-(lithioxymethyl)benzimidazoles 7 undergo smooth acid-catalyzed dehydroxymethylation under mild conditions to give N-unsubstituted 2-substituted benzimidazoles 2.
A SELECTIVE SYNTHESIS OF UNSYMMETRICAL 1,1'-METHYLENEBISDIAZOLES BY SOLID-LIQUID PHASE TRANSFER CATALYSIS
Julia, Sebastian,Martinez-Martorell, Carlos,Elguero, Jose
, p. 2233 - 2237 (2007/10/02)
1,1'-Methylenebisdiazoles Az1-CH2-Az2, Az1 and Az2 being two different diazoles, can be prepared selectively in three steps, through 1-hydroxymethyl- and 1-chloromethyldiazoles, by solid-liquid (S-L) phase transfer catalysis.
