New strategy for diene synthesis : application in total synthesis of Palmerolide A

Palladium-catalyzed alkenylation offers one of the most efficient methods for the synthesis of functionalized butadienes. However, due to the need for pre-functionalization of reactants and undesirable formation of stoichiometric amount of waste in the reactions, these processes were rendered neithe...

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Main Author: Wen, Zhenkang
Other Authors: Tang Liangfu
Format: Thesis
Language:English
Published: 2013
Subjects:
Online Access:https://hdl.handle.net/10356/51110
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author Wen, Zhenkang
author2 Tang Liangfu
author_facet Tang Liangfu
Wen, Zhenkang
author_sort Wen, Zhenkang
collection NTU
description Palladium-catalyzed alkenylation offers one of the most efficient methods for the synthesis of functionalized butadienes. However, due to the need for pre-functionalization of reactants and undesirable formation of stoichiometric amount of waste in the reactions, these processes were rendered neither atom-economical nor environmentally benign. The emphasis of this thesis is focused on the design and development of a palladium-catalyzed cross-coupling reaction of unactivated alkenes with acrylates for the construction of 1,3-diene motifs and its application towards a total synthesis of the natural product, Palmerolide A. In the first introduction chapter, a summary of established methodologies in the construction of 1,3-butadiene system is outlined, ranging from carbonyl olefination to recently emerging olefin metathesis. In particular, the strategy of transition metal-catalyzed alkenylation is thoroughly and intensively discussed. With the increasing demand for more atom- and step-economical methods, we have developed a direct and efficient palladium-catalyzed method for the cross-coupling of homoallylic and allylic alcohols with acrylates that produces dienic alcohols in moderate to high yields, and with good stereoselectivity.
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spelling ntu-10356/511102023-02-28T23:53:42Z New strategy for diene synthesis : application in total synthesis of Palmerolide A Wen, Zhenkang Tang Liangfu Loh Teck Peng School of Physical and Mathematical Sciences DRNTU::Science::Chemistry Palladium-catalyzed alkenylation offers one of the most efficient methods for the synthesis of functionalized butadienes. However, due to the need for pre-functionalization of reactants and undesirable formation of stoichiometric amount of waste in the reactions, these processes were rendered neither atom-economical nor environmentally benign. The emphasis of this thesis is focused on the design and development of a palladium-catalyzed cross-coupling reaction of unactivated alkenes with acrylates for the construction of 1,3-diene motifs and its application towards a total synthesis of the natural product, Palmerolide A. In the first introduction chapter, a summary of established methodologies in the construction of 1,3-butadiene system is outlined, ranging from carbonyl olefination to recently emerging olefin metathesis. In particular, the strategy of transition metal-catalyzed alkenylation is thoroughly and intensively discussed. With the increasing demand for more atom- and step-economical methods, we have developed a direct and efficient palladium-catalyzed method for the cross-coupling of homoallylic and allylic alcohols with acrylates that produces dienic alcohols in moderate to high yields, and with good stereoselectivity. DOCTOR OF PHILOSOPHY (SPMS) 2013-01-22T03:03:33Z 2013-01-22T03:03:33Z 2012 2012 Thesis Wen, Z. (2012). New strategy for diene synthesis : application in total synthesis of palmerolide A. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/51110 10.32657/10356/51110 en 118 p. application/pdf
spellingShingle DRNTU::Science::Chemistry
Wen, Zhenkang
New strategy for diene synthesis : application in total synthesis of Palmerolide A
title New strategy for diene synthesis : application in total synthesis of Palmerolide A
title_full New strategy for diene synthesis : application in total synthesis of Palmerolide A
title_fullStr New strategy for diene synthesis : application in total synthesis of Palmerolide A
title_full_unstemmed New strategy for diene synthesis : application in total synthesis of Palmerolide A
title_short New strategy for diene synthesis : application in total synthesis of Palmerolide A
title_sort new strategy for diene synthesis application in total synthesis of palmerolide a
topic DRNTU::Science::Chemistry
url https://hdl.handle.net/10356/51110
work_keys_str_mv AT wenzhenkang newstrategyfordienesynthesisapplicationintotalsynthesisofpalmerolidea