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以茚酮類分子為起始物合成苯酚之衍生物的研究 ; Syntheses of 1-Naphthol Derivatives via Ring Expansion of 1-Acyl-1-indanol Structures

Thesis published in 2011 by 王冠喻, Kuan-Yu Wang
This paper was not found in any repository; the policy of its publisher is unknown or unclear.
This paper was not found in any repository; the policy of its publisher is unknown or unclear.

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Abstract

本篇主要是利用擴環反應來合成苯酚衍生物,我們也改變以往利用金屬催化劑的方法來得到產物;首先,我們以1-茚酮類分子為起始物,與wittig試劑反應,得到phenylmethylene alkene 1,再將化合物1與OsO4及T.M.O.氧化形成雙醇化合物,而得到化合物2,最後,再將化合物2上的二級醇氧化成ketone,得到化合物3,即完成擴環反應起始物的製備;得到化合物3後,與甲氧鈉反應,即得到擴環的產物2-hydroxy-α-tetralone 4,最後,在以苯甲磺酸與化合物4進行脫水反應,即可以得到最終產物苯酚衍生物5。 ; The goal of this paper is to synthesize 1-naphthol derivatives, to use ring expansion reaction. And, we also changed formerly obtained the product using the metal catalyst method. First, a Wittig reaction of indanone molecules with benzyltriphenyl-phosphoniumchloride, in the presence of butyl lithium, furnished 1-(phenylmethylene)-indane 1. Then, dihydroxylation of compound 1 with Osmium tetroxide and T.M.O reaction gave a diol product, in which the secondary hydroxyl group was further oxidized to a carbonyl group, and 1-acyl-1-indanol 3 was obtained. Treatment of 3 with sodium methoxide in methanol resulted in a ring expansion reaction, which provided 2-hydroxy-α-tetralone 4. Dehydration of 4 using p-TsOH as the catalyst eventually afforded naphthol 5. ; 碩士