排序方式: 共有7条查询结果,搜索用时 62 毫秒
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Chen CT Pawar VD Munot YS Chen CC Hsu CJ 《Chemical communications (Cambridge, England)》2005,(19):2483-2485
Functionalized N-2-mercaptoethyl-gallamides bearing three or five hydroxyl units that are tethered with diethylene glycol ether(s) allow for transferring hydrophobically pyridine-capped CdSe/ZnS core/shell nanoparticles from an organic to an aqueous layer with intact fluorescent profiles. 相似文献
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Ganeshpurkar Ankit Singh Ravi Shivhare Shalini Divya Kumar Devendra Gutti Gopichand Singh Ravibhushan Kumar Ashok Singh Sushil Kumar 《Molecular diversity》2022,26(3):1455-1479
Molecular Diversity - Structure-based drug design (SBDD) is an important in silico technique, used for the identification of enzyme inhibitors. Acetylcholinesterase (AChE), obtained from... 相似文献
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A diverse array of oxometallic species were examined as catalysts for a test direct condensation of benzoic acid and 2-phenylethanol in 1:1 stoichiometry. Besides group IVB MOCl2-xH2O and TiOX2-xH2O, group VB VOCl2-xTHF and group IVB TiO(acac)2 were found to be the most efficient and water-tolerant catalysts for the test reaction. The new neutral catalytic protocol with the optimal TiO(acac)2 tolerates many stereo/electronic structural variations in both (di)acid (1 degree -3 degrees alkyl and aryl) and (di)alcohol (1 degree, 2 degrees alkyl, and aryl) components with high chemoselectivity. 相似文献
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Chen CT Kuo JH Pawar VD Munot YS Weng SS Ku CH Liu CY 《The Journal of organic chemistry》2005,70(4):1188-1197
[reaction: see text] Among six different group VIb oxometallic species examined, dioxomolybdenum dichloride and oxomolybdenum tetrachloride were the most efficient catalysts to facilitate nucleophilic acyl substitution (NAS) of anhydrides with a myriad array of alcohols, amines, and thiols in high yields and high chemoselectivity. In contrast to the well-recognized redox chemical behaviors associated with oxomolybdenum(VI) species, the catalytic NAS was unprecedented and tolerates virtually all kinds of functional groups. By using benzoic anhydride as a mediator for in situ generation of an incipient mixed anhydride-MoO(2)Cl(2) adduct with a given functional alkanoic acid, one can achieve oleate, dipeptide, diphenylmethyl, N-Fmoc-alpha-amino, pyruvic, and tert-butylthio ester, N-tert-butylamide, and trityl methacrylate syntheses with appropriate protic nucleophiles. The amphoteric character of the Mo=O unit in oxomolybdenum chlorides was found to be responsible for the catalytic NAS profile as supported by a control NAS reaction of using an authentic adduct-MoOCl(2)(O(2)CBu(t)())(2) between pivalic anhydride and MoO(2)Cl(2) as the catalyst. 相似文献
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Digambar D. Gaikwad Satish A. Dake Ravibhushan S. Kulkarni Wamanrao N. Jadhav Shankar B. Kakde 《合成通讯》2013,43(23):4093-4097
The use of molecular iodine as a catalyst for the oxidation of ketones using hydrogen peroxide in the presence of acetic acid at room temperature is reported. 相似文献
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Satish A. Dake Ravibhushan S. Kulkarni Vijay N. Kadam Sandesh S. Modani Jayant J. Bhale Sumangala B. Tathe 《合成通讯》2013,43(21):3898-3904
An environmentally friendly ionic liquid is used for the first time in mild and selective oxidation of aryl halides to corresponding aldehydes using iodoxybenzoic acid as oxidizing agent. 相似文献
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Goraksha Khose Shailesh ShindeAnil Panmand Ravibhushan KulkarniYogesh Munot Anish BandyopadhyayDinesh Barawkar Santoshkumar N. Patil 《Tetrahedron letters》2014
A novel synthetic route to substituted esters of imidazoles, oxazoles, thiazoles, and diethyl pyrazine-2,5-dicarboxylates via C-formylation of glycine ethyl ester hydrochloride is reported. This methodology is simple, robust, and gives good yields of different heterocyclic esters in one or two steps from a common acyclic precursor and is amenable to large scale synthesis. 相似文献
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