61832-43-7Relevant academic research and scientific papers
A simple and environmentally benign synthesis of novel spiro[indoline-3,5′-pyrano[2,3-d]pyrimidine] derivatives in water
Ghadiri, Sakineh,Bayat, Mohammad,Hosseini, Fahimeh Sadat
, p. 1079 - 1084 (2019/03/14)
Abstract: A green, convenient, and efficient one-pot synthesis of a new class of spiro[indolinepyranopyrimidine] derivatives was achieved in good yields by the multi-component reaction of N-alkyl-1-(methylthio)-2-nitroethenamine derived from the addition
Rapid and catalyst free synthesis of new bis(benzo[: G] chromene) and bis(pyrano[3,2- c] chromene) derivatives and optimization of reaction conditions using response surface methodology
Hosseini, Fahimeh Sadat,Bayat, Mohammad,Afsharnezhad, Milad
, p. 39466 - 39474 (2019/12/15)
4,4′-(1,4-phenylene)bis(2-(alkylamino)-3-nitro-4H-benzo[g]chromene-5,10-dione) and 4,4′-(1,4-phenylene)bis(2-(alkylamino)-3-nitropyrano[3,2-c]chromen-5(4H)-one) derivatives are synthesized by a one-pot, multi-component reaction of N-alkyl-1-(methylthio)-2
Synthesis of Spiro[indoline-3,4′-pyrano[3,2-c]chromene]diones
Ghadiri, Sakineh,Bayat, Mohammad,Hosseini, Fahimeh Sadat
, p. 2693 - 2697 (2018/10/20)
A new series of isatin-based spiro-fused derivatives were prepared, via three-component reaction of N-alkyl-1-(methylthio)-2-nitroethenamine derived from the addition of various amines to nitroketene dithioacetal with isatin derivatives and 4-hydroxycouma
An efficient synthesis of N-substituted 3-nitrothiophen-2-amines
Kumar, Sundaravel Vivek,Muthusubramanian, Shanmugam,Menéndez, J. Carlos,Perumal, Subbu
supporting information, p. 1707 - 1712 (2016/04/10)
A novel protocol for the synthesis of 3-nitro-N-aryl/alkylthiophen-2-amines in good yields from the reaction of α-nitroketene N,S-aryl/alkylaminoacetals and 1,4-dithiane-2,5-diol in the presence of K2CO3 in refluxing ethanol is descr
Novel [2-(4-piperidinyl)ethyl](thio)ureas: Synthesis and antiacetylcholinesterase activity
Vidaluc,Calmel,Bigg,Carilla,Stenger,Chopin,Briley
, p. 689 - 695 (2007/10/02)
A series of 1-ar(o)yl-3-[2-(1-benzyl-4-piperidinyl)ethyl](thio)urea derivatives was synthesized and evaluated for antiacetylcholinesterase activity. Most aroyl(thio)urea derivatives showed potent inhibitory activity in the sub-micromolar range. A comparable potency was obtained with the aryl(thio)urea analogues by replacing the phenyl with a 2-pyridyl group. The substituted guanidine variations proved to be almost inactive whereas the nitroethylene analogues appeared to be quite efficient. These results were interpreted in terms of the preferential cis-trans conformation of the aroyl(thio)urea and 2-pyridyl(thio)urea moieties involving the existence of hydrogen bonding. In vivo experiments showed that compound 7m had maximal antiamnestic activity at 0.03 mg/kg with a therapeutic ratio greater than 1000, while cholinergic side effects were only seen at doses 100-fold the maximally effective antiamnestic dose. Compound 7m represents a potentially interesting antidementia agent.
CATALYTIC AND COMPUTER SIMULATION STUDIES OF CARBON-SULPHUR BOND CLEAVAGE OVER ZEOLITE-Y
Bhawal, B. M.,Vetrivel, R.,Reddy, T. Indrasena,Deshmukh, A. R. A. S.,Rajappa, S.
, p. 377 - 384 (2007/10/02)
N-Substituted carbonimidodithioic acid dimethyl esters, when reacted with an active methylene compound such as nitromethane, undergo carbon-carbon bond formation followed by carbon-sulphur bond cleavage in the presense of zeolite catalysts to give 1-subst
Unique zeolite-catalyzed synthesis of nitroketene S,N-acetals
Indrasena Reddy,Bhawal, Baburao M.,Rajappa, Srinivasachari
, p. 2101 - 2108 (2007/10/02)
Dimethyl carbonimidodithioates (4a-g, 7a-c) derived from various primary amines and amino acid esters [glycine, (L)-alanine and (L)-phenylalanine] have been condensed with nitromethane in the presence of the rare-earth exchanged zeolite RE(70%)Na Y to give the S,N-acetals (5a-g, 8a-c). Mercuric chloride catalyzed hydrolysis of these (8a-c) has led to the nitroacetyl derivatives (9a-c). The glycine derivative (7a) gives a dimeric product (11) when heated alone with the zeolite.
Nitroketene-s,n-acetals as precursors for nitroacetamides and the elusive nitrothioacetahides
Manjunatha, Sulur G.,Reddy, K. Venodhar,Rajappa, Srinivasachari
, p. 1327 - 1330 (2007/10/02)
1-Amino-1-methylthio-2-nitroethenes (2) can be converted in high yields to the Nitroacetamides (3) by Hg2+ catalysed hydrolysis and to the Nitrothioacetamides (4) by Na2S in ethanol-acetic acid.
