Preparation of 4-Allenyloxazolines from (<i>Z</i>)-2-En-4-yn-1-ol via Propargyl/Allenyl Isomerization

A novel method for the preparation of 4-allenyl-oxazolines <b>2</b> is described via the reaction of 2-en-4-yn-1-ols <b>1</b> with trichloroacetonitrile in the presence of DBU. Reaction proceeds through the nucleophilic attack of OH functionality in <b>1</b> to CCl<sub>3</sub>CN followed by cyclization, propargyl/allene isomerization, and protonation. In this investigation, it is noticed that propargyl/allene isomerization is sensitive to the substituents.

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Publication Details

Journal
The Journal of Organic Chemistry
Published
2024-08-23
DOI
https://doi.org/10.1021/acs.joc.4c01152
Citations
1
Primary Topic
Catalytic Alkyne Reactions
Type
article
Field-Weighted Citation Impact
0.25

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article

Preparation of 4-Allenyloxazolines from (Z)-2-En-4-yn-1-ol via Propargyl/Allenyl Isomerization

S. C. HUNG, Shiuh‐Tzung Liu, Yu‐Min Wang, Yi‐Hung Liu
1 citations
The Journal of Organic Chemistry
Catalytic Alkyne Reactions
0.25
article

Preparation of 4-Allenyloxazolines from (Z)-2-En-4-yn-1-ol via Propargyl/Allenyl Isomerization

S. C. HUNG, Shiuh‐Tzung Liu, Yu‐Min Wang, Yi‐Hung Liu
article en
1 citations

Abstract

A novel method for the preparation of 4-allenyl-oxazolines <b>2</b> is described via the reaction of 2-en-4-yn-1-ols <b>1</b> with trichloroacetonitrile in the presence of DBU. Reaction proceeds through the nucleophilic attack of OH functionality in <b>1</b> to CCl<sub>3</sub>CN followed by cyclization, propargyl/allene isomerization, and protonation. In this investigation, it is noticed that propargyl/allene isomerization is sensitive to the substituents.

The Journal of Organic ChemistryVol. 89(17)
National Taiwan University (TW)
National Science and Technology Council
Openalex Percentile: Top 49%
Catalytic Alkyne Reactions
0.25
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