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1.
V. Ramamoorthy A. Ramasubbu S. Muthusubramanian S. Sivasubramanian 《Journal of inclusion phenomena and macrocyclic chemistry》1999,33(1):69-80
The nitrone is found to be included in the -cyclodextrin cavity in two different stoichiometries viz., 1G : 1H and 1G : 2H – the existence of which is proved by physical methods. The 1G : 2H complex of the nitrone serves as a good potent dipolarophile in the 1,3-dipolar cycloaddition reactions with olefins resulting in rate acceleration and regioselection. 相似文献
2.
S. R. Jayapradha S. Muthusubramanian 《Phosphorus, sulfur, and silicon and the related elements》2013,188(1):32-38
Abstract The synthesis of a new set of 2,3,4,5-substituted isoxazolidines having a sulfur containing heterocyclic moiety has been described. The structural features of the compounds have been analyzed by 1H and 13C NMR spectroscopy as well as by single crystal X-ray studies. [Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements for the following free supplemental resource: .cif file.] 相似文献
3.
Synthesis of 6‐Aryl‐4H‐imidazo[1,2‐b][1,2,4]triazoles and 6‐Aryl‐thiazolo[3,2‐b][1,2,4]triazoles
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The cyclization of the derivatives of 3‐aminotriazole, 2‐(5‐substituted 4H‐1,2,4‐triazol‐3‐ylamino)‐1‐arylethanones and 2‐(4H‐1,2,4‐triazol‐3‐ylthio)‐1‐arylethanones to yield 6‐aryl‐4H‐imidazo[1,2‐b][1,2,4]triazoles and 6‐aryl‐thiazolo[3,2‐b][1,2,4]triazoles has been described. 相似文献
4.
Thulasiraman Krishnaraj Shanmugam Muthusubramanian 《Journal of heterocyclic chemistry》2014,51(4):1012-1019
The synthesis of compounds having triazole and selena/thiadiazole rings connected by a chain having sulfur and nitrogen in the link has been described. The resultant N‐heteroaryl‐2‐(heteroarylthio)acetamide may be biologically important as related compounds found application in the inhibition of HIV 1 replications. 相似文献
5.
Thulasiraman Krishnaraj Shanmugam Muthusubramanian 《Journal of heterocyclic chemistry》2014,51(Z1):E68-E70
A new method of generating the fused heterocyclic system with bridgehead nitrogen, triazolo[4,3‐a]pyrimidine, from 3‐amino‐1,2,4‐triazole and unsaturated halo acids has been described. 相似文献
6.
One‐Pot Green Synthesis of Thiazolo[3,2‐a]pyridine Derivatives via Tandem Cyclization in Aqueous Media
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Muthusamy Boominathan Muthupandi Nagaraj Chellaiah Maheshwaran Shanmugam Muthusubramanian Nattamai Bhuvanesh 《Journal of heterocyclic chemistry》2014,51(1):244-248
Facile, three‐component domino reactions of readily available thioglycolic acid/ethyl thioglycolate, aromatic aldehydes, and malononitrile/ethyl cyanoacetate in aqueous potassium carbonate at room temperature afforded thiazolo[3,2‐a]pyridine derivatives chemoselectively in good to excellent yield. All the formed 4H‐chromenes were characterized by spectral and X‐ray methods. 相似文献
7.
V. Sridharan S. Muthusubramanian S. Pon Saravanakumar 《Journal of heterocyclic chemistry》2005,42(4):515-518
Three‐component stereoselective synthesis of a set of new tetra substituted isoxazolidines from 5‐substi‐tuted 2‐methoxybenzaldehydes, N‐phenylhydroxylamine and 1‐(2‐thienyl)‐3‐arylprop‐2‐en‐1‐ones has been achieved. The effect of microwave irradiation on the reaction under solvent‐free conditions has also been investigated. The stereochemistry of the final products has been confirmed by NMR and single crystal X‐ray analysis. 相似文献
8.
A novel method for the synthesis of 1,3-enynes is described through oxidative cyclization of the semicarbazones of Michael adducts having potential nitrile functionality. Reaction of these 1,3-enynes with diaryl nitrones has yielded a diastereomeric mixture of highly substituted 2,3-dihydro-1H-pyrrole derivatives via a tandem regioselective addition with subsequent rearrangement. 相似文献
9.
Sadaiyan Ramadass Jayapradha Vellaisamy Sridharan Shanmugam Muthusubramanian Kurt Polborn 《Journal of heterocyclic chemistry》2007,44(5):1105-1108
10.
In this paper we derive limit theorems of some general functions of independent and identically distributed random variables. A stability property is used to derive the limit theory for general functions. A procedure followed in de Haan (1976) and Leadbetter et al. (1983) is used to prove the main result. The limit theorems for the maximum, minimum and sum of fixed sample sizes and random sample sizes are derived as special cases of the main result. 相似文献