On February 1, 2012, Zhang, Hui Min; Kawabata, Kazuya; Miyauchi, Hideki; Shimo, Tetsuro published an article.Recommanded Product: 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate) The title of the article was One-pot synthesis of macrocyclic di- and tetralactones using [2 + 2] photocycloaddition reactions of di-2-pyrones with α,ω-diolefins. And the article contained the following:
Sensitized photocycloaddition reactions of 6,6′-dimethyl-4,4′-[1,4-bis(methylenoxy)phenylene]-di-pyrone (I) with poly(ethyleneglycol)divinyl ethers II [n = 2, 3] or 2,2′-dimethyltrimethylene dimethacrylate (III), together with the reactions of 6,6′-dimethyl-4,4′-polymethylenedioxy-2-pyrones (6a, b) with 4 were described. The reactions of I with II gave crown ether type macrocyclic compounds possessing 19- and 22-membered rings across the C3-C4 and C3′-C4′ double bonds in 1, resp. Similar reactions of I with III and IV [X = (CH2)n, n= 5, 6] with III afforded different types of macrocycles having 19- to 21-membered rings across the C5-C6 and C5′-C6′ double bonds in 2-pyrone ring. The stereochem. features of macrocycles V and VI were determined by X-ray crystal anal. The reaction mechanism was inferred by MO methods. The experimental process involved the reaction of 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)(cas: 1985-51-9).Recommanded Product: 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)
The Article related to macrocyclic dilactone tetralactone preparation mol modeling, photocycloaddition dipyrone diolefin, Heterocyclic Compounds (More Than One Hetero Atom): Eight- and Higher-Membered Rings and other aspects.Recommanded Product: 2,2-Dimethylpropane-1,3-diyl bis(2-methylacrylate)
Referemce:
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