2-(1-Hydroxyethyl)-4,5-Dihydrothiazole 以 水 用作溶剂,化学反应 0.17H,反应生成2-乙酰基-2-噻唑啉 参考文献:Studies On The Formation And Stability Of The Roast-Flavor Compound 2-Acetyl-2-Thiazoline 标题:Studies On The Formation And Stability Of The Roast-Flavor Compound 2-Acetyl-2-Thiazoline 摘要:2-(1-Hydroxyethyl)-4,5-Dihydrothiazole (Hdt) Was Identified By H-1-And C-13-NMR Measurements As The Main Volatile Product Formed By Storage Of An Aqueous Solution Of Cysteamine And Methylglyoxal At Low Temperatures (6 Degrees C) The Structure Of Hdt Was Confirmed By Synthesis. Systematic Studies On The Thermal Stability Of The Hdt Under Different Conditions Either In Aqueous Solution Or During High-Resolution Gas Chromatography Revealed That Hdt Is An Important Intermediate In The Formation Of The Intensely Roasty Smelling Food Flavor Compound 2-Acetyl-2-Thiazoline (At). Model Studies Showed That More Than 10% Of The Precursor Hdt Was Converted Into At Simply By Heating For 10 Min In Water. The Activation Energy Of This Reaction Was 57.4 Kj/mol. Experiments On The Thermal Stability Of At Itself Revealed That Heating In Aqueous Solution Also Led To A Degradation Of At,Whereas Heating In An Oil Significantly Stabilized The Flavor Compound. Doi:10.1021/jf00059A032
参考标题:[2+2] Cycloaddition Of Electron-Poor Acetylenes To (E)-3-Dimethylamino-1-Heteroaryl-Prop-2-En-1-Ones: Synthesis Of Highly Functionalized 1-Heteroaroyl-1,3-Butadienes 作者:Jure Bezenšek,Tanja Koleša,Uroš Grošelj,Jernej Wagger,Katarina Stare,Anton Meden,Jurij Svete,Branko Stanovnik |发布日期:2010.6 摘要:Microwave-Assisted [2+2] Cycloaddition Of (E)-3-Dimethylamino-1-Heteroaryl-Prop-2-En-1-Ones To Dimethyl Acetylenedicarboxylates Gives (2E,3E)-Dimethyl-2-[(Dimethylamino)Methylene]-3-(Substituted)Succinates In 8-91% Yield. In The Case Of A 4,5-Dihydrothiazoline Derivative, Cycloaddition Also Took Place At The Endocyclic Cn Double Bond.
合成参考文献
参考文献:10.1021/cr040097y 摘要:Adams A, De Kimpe N. Chemistry of 2-acetyl-1-pyrroline, 6-acetyl-1,2,3,4-tetrahydropyridine, 2-acetyl-2-thiazoline, and 5-acetyl-2,3-dihydro-4H-thiazine: extraordinary Maillard flavor compounds. Chem Rev. 2006 Jun;106(6):2299–319. doi: 10.1021/cr040097y.