金(I)催化8-芳香環-2-烯-7-炔-1-辛醇進行分子內克來森類型重排反應合成非鏡像選擇性1,2-雙取代環戊烷衍生物
碩士 === 國立臺灣師範大學 === 化學系 === 97 === The cyclopentanes are frequently found in a variety of natural products. Therefore, the development of practical and facile synthetic routes for the synthesis of stereoselective five-membered ring derivatives is important. In the thesis, we report that gold and sil...
Main Author: | |
---|---|
Other Authors: | |
Format: | Others |
Language: | zh-TW |
Online Access: | http://ndltd.ncl.edu.tw/handle/40246247560235184490 |
id |
ndltd-TW-097NTNU5065024 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-TW-097NTNU50650242015-10-13T12:04:56Z http://ndltd.ncl.edu.tw/handle/40246247560235184490 金(I)催化8-芳香環-2-烯-7-炔-1-辛醇進行分子內克來森類型重排反應合成非鏡像選擇性1,2-雙取代環戊烷衍生物 張維中 碩士 國立臺灣師範大學 化學系 97 The cyclopentanes are frequently found in a variety of natural products. Therefore, the development of practical and facile synthetic routes for the synthesis of stereoselective five-membered ring derivatives is important. In the thesis, we report that gold and silver cocatalyzed intramolecular Claisen-type rearrangement of (E)-8-phenyloct-2-en-7-yn-1-ol (enynol) produces 1-phenylcarbonyl-2-vinylcyclopentanes in diastereoselective fashion. Reaction of hex-5-yn-1-ol with aryl iodine catalyzed by palladium(0)under Sonogashira reaction conditions produces 6-arylhex-5-yn-1-ol. Oxidation of 6-arylhex-5-yn-1-ol with IBX (2- iodoxybenzoic acid) affords 6-arylhex-5-yn-1-al. The resulting aldehyde was treated with (2-ethoxy-2-oxoethyl)triphenylphosphonium bromide to afford (E)-ethyl 8-phenyloct-2-en-7-ynoate. Reduction of the (E)-ethyl-8-phenyloct-2-en-7-ynoate using DIBAL(Diisobutylaluminium hydride) generated (E)-8-phenyloct-2-en-7-yn-1-ol. Treatment of the enynol with 10 mol % Ph3PAuCl / AgOTf in toluene at reflux produced 1-phenylcarbonyl-2-vinylcyclopentanes. The formation of the cyclopentane derivative is believed to undergo intramolecular Claisen-type rearrangement. The X-ray diffraction analysis reveals that the relative stereochemistry of the vinyl and the keto is trans. 葉名倉 學位論文 ; thesis 115 zh-TW |
collection |
NDLTD |
language |
zh-TW |
format |
Others
|
sources |
NDLTD |
description |
碩士 === 國立臺灣師範大學 === 化學系 === 97 === The cyclopentanes are frequently found in a variety of natural products. Therefore, the development of practical and facile synthetic routes for the synthesis of stereoselective five-membered ring derivatives is important. In the thesis, we report that gold and silver cocatalyzed intramolecular Claisen-type rearrangement of (E)-8-phenyloct-2-en-7-yn-1-ol (enynol) produces 1-phenylcarbonyl-2-vinylcyclopentanes in diastereoselective fashion.
Reaction of hex-5-yn-1-ol with aryl iodine catalyzed by palladium(0)under Sonogashira reaction conditions produces 6-arylhex-5-yn-1-ol. Oxidation of 6-arylhex-5-yn-1-ol with IBX (2- iodoxybenzoic acid) affords 6-arylhex-5-yn-1-al. The resulting aldehyde was treated with (2-ethoxy-2-oxoethyl)triphenylphosphonium bromide to afford (E)-ethyl
8-phenyloct-2-en-7-ynoate. Reduction of the (E)-ethyl-8-phenyloct-2-en-7-ynoate using DIBAL(Diisobutylaluminium hydride) generated (E)-8-phenyloct-2-en-7-yn-1-ol.
Treatment of the enynol with 10 mol % Ph3PAuCl / AgOTf in toluene at reflux produced 1-phenylcarbonyl-2-vinylcyclopentanes. The formation of the cyclopentane derivative is believed to undergo intramolecular Claisen-type rearrangement. The X-ray diffraction analysis reveals that the relative stereochemistry of the vinyl and the keto is trans.
|
author2 |
葉名倉 |
author_facet |
葉名倉 張維中 |
author |
張維中 |
spellingShingle |
張維中 金(I)催化8-芳香環-2-烯-7-炔-1-辛醇進行分子內克來森類型重排反應合成非鏡像選擇性1,2-雙取代環戊烷衍生物 |
author_sort |
張維中 |
title |
金(I)催化8-芳香環-2-烯-7-炔-1-辛醇進行分子內克來森類型重排反應合成非鏡像選擇性1,2-雙取代環戊烷衍生物 |
title_short |
金(I)催化8-芳香環-2-烯-7-炔-1-辛醇進行分子內克來森類型重排反應合成非鏡像選擇性1,2-雙取代環戊烷衍生物 |
title_full |
金(I)催化8-芳香環-2-烯-7-炔-1-辛醇進行分子內克來森類型重排反應合成非鏡像選擇性1,2-雙取代環戊烷衍生物 |
title_fullStr |
金(I)催化8-芳香環-2-烯-7-炔-1-辛醇進行分子內克來森類型重排反應合成非鏡像選擇性1,2-雙取代環戊烷衍生物 |
title_full_unstemmed |
金(I)催化8-芳香環-2-烯-7-炔-1-辛醇進行分子內克來森類型重排反應合成非鏡像選擇性1,2-雙取代環戊烷衍生物 |
title_sort |
金(i)催化8-芳香環-2-烯-7-炔-1-辛醇進行分子內克來森類型重排反應合成非鏡像選擇性1,2-雙取代環戊烷衍生物 |
url |
http://ndltd.ncl.edu.tw/handle/40246247560235184490 |
work_keys_str_mv |
AT zhāngwéizhōng jīnicuīhuà8fāngxiānghuán2xī7guì1xīnchúnjìnxíngfēnzinèikèláisēnlèixíngzhòngpáifǎnyīnghéchéngfēijìngxiàngxuǎnzéxìng12shuāngqǔdàihuánwùwányǎnshēngwù |
_version_ |
1716852709865291776 |