The reaction of substituted 0-(iV-phenylcarbamoyl)benzophenone oximes with dibutylamine in toluene was studied by Levine and Fech [1]. The present com­ munication represents a continuation of our previous study of hydrolysis of 0-(N-4-nitrophenylcarbamoyl)benzaldehyde oximes [2, 3]. The aim of our work was to complete the knowledge about the substi­ tution influence from the ring joined to a ni...

The current treatment regimen for organophosphorus nerve agent intoxication depends on the ability of oximes to rapidly reactivate nerve agent-inhibited acetylcholinesterase (AChE) activity. We have studied the capability of the tertiary oximes monoisonitrosoacetone (MINA) and diacetylmonoxime (DAM), in comparison with the quaternary oximes 2-PAM, HLö7 and MMB-4, to reactivate AChE inhibited by...

The ability of oximes to reactivate organophosphorus nerve agent-inhibited acetylcholinesterase (AChE) activity is critical for protection against chemical warfare nerve agent intoxication. We have studied the capability of the tertiary oximes monoisonitrosoacetone (MINA) and diacetylmonoxime (DAM), in comparison with the quaternary oximes 2-PAM, HLo7 and MMB-4 to reactivate AChE inhibited by s...

The neuroprotective effects of newly developed oximes (K156, K203) and currently available oximes (obidoxime, HI-6) in combination with atropine in rats poisoned with cyclosarin were studied. The cyclosarin-induced neurotoxicity was monitored using a functional observational battery 24 hours after cyclosarin challenge. The results indicate that a newly developed oxime K156 is able to counteract...

The reactivating and therapeutic efficacy of two combinations of oximes (HI ‐6 + trimedoxime and HI ‐6 + K203) was compared with the effectiveness of antidotal treatment involving single oxime (hi ‐6, trimedoxime, K203) using in vivo methods. In vivo determined percentage of reactivation of cyclosarin ‐inhibited blood and tissue acetylcholinesterase in poisoned rats showed that the reactivating...

A novel and efficient method has been developed for the synthesis of N,N-dialkylamino-O-alkyl-2-(1-methyl-2-oxopropylidene)phosphorohydrazido oximes 5. The reactions involve the condensation of diacetylmonoxime and N,N-dialkylamino-O- alkylphosphorohydrazides in the presence of activated silica and give the corresponding target oximes in excellent yields under mild conditions.

In an attempt to develop effective antidote against organophosphorus intoxication, some new imidazole-pyridinium mono-oximes, long chain pyridinium mono-oximes and cholineacetyltransferase inhibitors were synthesised. These compounds were evaluated for their in vivo therapeutic protection and neuromuscular function studies in rodents. The results indicate that SPK-series oximes may be useful ag...

Mesoporous MCM-41 silicas anchored with sulfonic acid (–SO3H) groups (denoted MSN-SA) via postsynthesis modification are very effective for the Beckman rearrangement. A simple and convenient procedure for conversion of a variety oximes to their corresponding amides and lactams has been developed. The reaction was carried out in the presence of MSN-SA as the catalyst. The best results for conver...

A simple and efficient catalytic system for direct conversion of methylarenes into aromatic oximes has been developed, with Cu(OAc)2 as catalyst, NHPI (N-Hydroxyphthalimide) as additive, TBN (tert-butyl nitrite) as both the nitrogen source and the oxidant. This process proceeds under mild conditions, tolerates a wide range of substrates, affording the targeted aromatic oximes in 63-86% yields.

A nucleophilic catalysis method providing a concise synthesis of di-, tri-, and tetrasubstituted pyrroles is described. This regioselective one-pot method relies on nucleophilic catalysis of the intermolecular addition of oximes to activated alkynes and thermal rearrangement of the in situ generated O-vinyl oximes to form pyrroles that contain a functional group handle at the C3/C4 position.