Reduction of alpha-bromosulfones 1, 5, 13-16 by cat.(PhSe)(2)/NaBH4 occurred site-selectively in high yields. This reduction of 1,3- or 1,4-dibromobis(sulfone) 21 and 25 was applied to intramolecular coupling reactions to give the three- and four-membered carbocycles 26-28. (C) 1997 Elsevier Science Ltd.
Reduction of alpha-bromosulfones 1, 5, 13-16 by cat.(PhSe)(2)/NaBH4 occurred site-selectively in high yields. This reduction of 1,3- or 1,4-dibromobis(sulfone) 21 and 25 was applied to intramolecular coupling reactions to give the three- and four-membered carbocycles 26-28. (C) 1997 Elsevier Science Ltd.
reactions of secondary straight-chain aliphatic alcohols with lead tetraacetate, ceric ammonium nitrate, and heavy metal (Pb4+, Hg2+, Ag+) salts (AcO)−1, O2−, CO32−-halogen (I2, Br2, Cl2) combinations are discussed. By demonstrating the intermediacy of 5-bromo-2-hexanol, it was confirmed that the dark silver oxidebromine induced cyclisation of 2-hexanol (and alcohols in general) involves (as the other hypohalite
在与四乙酸铅,硝酸铈铵,和重金属次级直链脂族醇的反应的机制和δ-C原子的官能化的立体化学(铅4+,汞2+,银+)盐(ACO)-1, O 2−,CO 3 2-卤素(I 2,Br 2,Cl 2)组合。通过证明5-溴-2-己醇的中间性,证实了暗氧化银溴诱导的2-己醇(和一般的醇类)环化涉及(作为其他次卤代反应)分子内通过烷氧基提取1,5-氢自由基和δ-溴代醇的形成。描述了一种新颖且简单的方法,该方法通过使用银盐或汞盐以及氯气通过次氯酸盐反应从醇中获得四氢呋喃。
Acrylate compound and composition containing the same
申请人:TOKUYAMA SODA KABUSHIKI KAISHA
公开号:EP0206810A2
公开(公告)日:1986-12-30
Disclosed is an acrylate compound represented by the following general formula:
wherein R1 stands for a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R2 stands for an alkylene group having 2 to 20 carbon atoms, R3 stands for hydrogen atom or an alkyl group having 1 to 20 carbon atoms when n is 1, and n is 1 or 2 and adhesive compositions comprising this acrylate compound.