- PYRIDINE COMPOUNDS
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The present invention relates to use of the compounds of formula (I) wherein the variables are defined as given in the description and claims. The invention further relates to he novel compounds and composition for compounds of formula (I).
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Page/Page column 198
(2018/09/12)
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- Synergistic promoting effect of ball milling and KF-alumina support for the green synthesis of benzothiazinones
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A solvent-free procedure was developed for the reaction of 2-aminothiophenols with 2-bromoalkanoates, where KF-Al2O3 support and ball milling cooperatively lead to a green and efficient synthesis of several benzothiazinone derivatives in good to excellent yields. The catalyst could be recycled in further reactions while maintaining its activity.
- Sharifi, Ali,Ansari, Mohammad,Darabi, Hossein Reza,Abaee, M. Saeed
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p. 529 - 532
(2016/01/20)
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- [NO3], a green and base-free medium for one-pot synthesis of benzothiazinones at room temperature
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A general and efficient room-temperature procedure is developed for high-yield synthesis of 2H-benzo[b][1,4]thiazin-3(4H)-one derivatives in one pot from the reaction of 2-aminothiophenols with 2-bromoalkanoates in ionic liquid [bmim]NO3 without the use of any catalyst, base, or additive. Products were obtained in good yields by simple extraction with Et2O followed by evaporation of the volatile contents and recrystallization from Et2O. The ionic liquid was recycled and reused in the next reaction without the loss of its activity.
- Sharifi, Ali,Abaee, M. Saeed,Rouzgard, Mahdiyeh,Mirzaei, Mojtaba
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p. 2079 - 2089
(2013/06/26)
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- Regioselective one pot synthesis of 2-alkyl/aryl-4H-benzo[1,4]thiazine-3- one via microwave irradiation
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A series of 2-alkyl/aryl-4H-benzo[1,4]thiazine-3-ones have been synthesized by microwave irradiation of ethyl-2-bromo-2-alkyl/aryl acetate and 2-amino thiophenol in the presence of 1,8-diazabicyclo-[5.4.0]undec-7-ene and N-methylpiperidine. All compounds were characterized by 1H NMR, 13C NMR and elemental analyses, and by X-ray crystallography in the case of 2-methyl-4H-benzo[1,4]thiazin-3-one.
- Kamila, Sukanta,Koh, Benjamin,Khan, Omair,Zhang, Hongming,Biehl, Edward R.
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p. 1641 - 1646
(2007/10/03)
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- Heterocyclic aldose reductase inhibitors and methods of using them
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The invention relates to new compounds of the formula: STR1 Aldose reductase inhibitors. Treatment of certain complications of diabetes.
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- Non-stereospecific Ring Expansion Reactions of Benzothiazoline Sulfoxides
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The stereochemistry of novel ring expansion of benzothiazoline sulfoxides to benzothiazines by reaction with acetic anhydride was examined.Reaction of trans-3-acetyl-2-ethyl-2-methylbenzothiazoline 1-oxide with acetic anhydride afforded 4-acetyl-3-ethylid
- Shimizu, Hiroshi,Ueda, Norihiro,Kataoka, Tadashi,Hori, Mikio
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p. 2571 - 2590
(2007/10/02)
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