马钱子碱海格试验的化学性质

Francisco Sánchez-Viesca, Reina Gómez
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引用次数: 0

摘要

本文的目的是阐明在黑格试验马钱子碱的过程中,即在酸性介质中马钱子碱与二氧化锰的整个相互作用过程中,在试管中发生了什么。本论文是根据反应介质对试剂和底物的化学行为进行的理论有机化学研究。试验过程中发生了一系列反应:亲电攻击双键、金属有机中间体酸解、仲醇氧化成酮、酸催化水合、烯醇反应、环氧化物形成、开环、二醇选择性反应、七元环解环。过滤残余的黑二氧化锰后,观察到黄红色到血红色。这是由于在酸性介质中没有显色分组而产生的变色现象。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Chemistry of Hager’s Test for Brucine
The purpose of the article is clear up what is happening in the test tube during the Hager’s test for brucine, that is, throughout the interaction of brucine with manganese dioxide in acidic medium. The paper is a Theoretical Organic Chemistry Study based on the chemical deportment of reagent and substrate, in accordance with the reaction medium. A series of reactions occur during the test: electrophilic attack to double bond, acidolysis of organometallic intermediates, oxidation of secondary alcohol to ketone, acid catalysed hydration, reaction of enol, epoxide formation, ring opening, selective reaction of diol, and ring cleavage of seven-member ring. A yellowish-red to blood-red colour is observed after filtering residual black manganese dioxide. This is due to halochromism, present in acidic medium, since there are no chromogenic groupings.
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