求大家帮我看看我这个氢转位反应中出现的怪异问题，谢谢
Methyl 3,6-dioxo-5a-cholan-24-oate (3)The 3,6-dioxo-5a sterol was prepared by acid-catalyzed isomerization
of the 5β sterol. The 3,6-dioxo-5β sterol 2 (9.6 g, 24 mmol)
was added to methanol (250 mL) and tetrahydrofuran (25 mL) to
dissolve the sterol completely. Concentrated hydrochloric acid
(12.5 mL) was added, and the reaction was allowed to proceed
overnight. The solvent was then removed under vacuum to yield
9.6 g (100%) of the 5αsterol 3. The reaction is similar to that
described by Demir et al., ~° except that the authors used basecatalyzed
isomerization with sodium methoxide. 3: m.p. 150-
152°C; t3C NMR (50.3 MHz; CHC13): 8 211.1,208.9 (for the C-3
and C-6 ketones, consistent with the results of Demir et al.~°),
174.4; ~H NMR (200 MHz, CDC13): 8 3.66 (s, 3 H), 0.96 (s, 3 H),
0.70 (s, 3 H).
我参照上面的文献进行氢转位的反应（将5位的β-H转换成α-H),可是氢谱的结果是全部变成了3位的缩酮，我是完全按照文献上的量做的，Concentrated hydrochloric acid用的是买来的分析纯的36-38%的浓盐酸，但就是结果不对，这是什么原因呀？？？
反应式如图 文献中没有说反应温度,是室温还是回流啊.还是目前的气温条件啊?你采用啥温度反应的?
感觉若全是缩酮,低场甲基氢应是六个啊,你只给出了3个,那应是半缩酮啊?好象楼主没有讲清楚. 其机理好像是在酸或碱的条件下，5位的氢易离去生成较稳定的叔正碳离子，然后进行构型转化，生成结构能量更低的。但是在浓盐酸的情况下，酮基是可以与甲醇生成缩酮的，但是氢谱3.66处应该有二个甲基峰才对。
建议参考：The reaction is similar to that described by Demir et al., ~° except that the authors used basecatalyzedisomerization with sodium methoxide.
用甲醇钠作催化剂，可避免上面的情况。 谢谢两位，我是采用目前的气温条件反应的，我的氢谱上3.67，3.221，3.217,都是甲基的单峰。
我看书上说，缩酮不稳定，可以用酸水解，但没找到相关的资料。
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