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对于含■Sb-OH 基团的1:1鄰二酚型氧锑化合物作了性能上的观察,并尝试利用这类化合物以作分离或证明鄰二酚类:(1)惟有个别的少数这类锑化合物(母体水溶性的),其锑上的羟基能经盐酸处理而为氯原子所取代,故不能作为普遍的事实,如 Causse 所肯定者。(2)酚型锑二氧键遇一定浓度以上的盐酸则显不安定。每一含这基团的氧锑化合物都能经盐酸处理而得回原来的鄰二酚,与一般认为对盐酸稳定之说不同(Christianson及 Hunter)。(3)酚型锑二氧键对硷也不稳定,与 Causse 及 Christians(?)n 的结果亦不同。(4)这类氧锑化合物仍一般都能为一定浓度的盐酸重结晶而达到纯化,惟分子中不能兼含有乙酰化酚基,因其能完全水解而脱去乙酰基,至酯基或酰胺基则大致无碍,虽然各该基团有些许水解。(5)曾从按照一德国专利所获得的产物中,分离出1-乙酰焦没食子酚锑,从而说明在该产物中至少含有1-乙酰焦没食子酚。(6)以吐酒石或酒石酸锑钠制得3-乙酰没食子酸的氧锑化合物,从而证实了 Lesser与 Gad 所拟的乙酰基位置,并且证明 Christiansen 的结论不确。(7)儿茶酚能与吐酒石成锑化合物,至其所以不能在较稀的水溶液中析出,乃受反应产品酸性酒石酸钾的溶解影响,若加以食盐,亦能析出。
The properties of the 1: 1 o-diphenol antimony oxide compounds containing ■ Sb-OH groups were observed and tried to use these compounds for the isolation or identification of o-diphenols: (1) only a few Antimony-like compounds (water-soluble parent) whose hydroxy groups on antimony can be replaced by chlorine atoms by hydrochloric acid are not universally accepted, as Causse asserts. (2) phenolic antimony dioxygen case of a certain concentration of hydrochloric acid is not stable. Each antimony oxy-compound containing this group can be treated with hydrochloric acid to give the original ortho-diphenol, which is different from what is generally considered to be stable to hydrochloric acid (Christianson and Hunter). (3) The phenolic antimony dioxy bonds are also unstable to the base, which is different from the results of Causse and Christians (?) N. (4) These antimony-oxygen compounds are still generally purified to a certain concentration of hydrochloric acid to recrystallize, but the molecule can not contain acetylated phenols, because it can be fully hydrolyzed and deacetylated acetyl, ester or amide Basically, the basic barrier, although the group a little hydrolysis. (5) 1-Acetylated pyrogallol has been isolated from the product obtained according to a German patent, indicating that at least 1-acetyl-pyrogallol is contained in the product. (6) Antimony oxide compounds of 3-acetyl gallic acid were prepared from toppin or sodium antimony tartrate, confirming the acetyl position proposed by Lesser and Gad, and proving that Christiansen’s conclusion is not correct. (7) Catechins can form an antimony compound with spit tartar, so that they can not be precipitated in more dilute aqueous solution, but are affected by the dissolution of acidic potassium tartrate in the reaction product. If salt is added, it can also be precipitated.