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Structure of 53841-07-9
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Ethyl but-3-ynoate is a linear alkyne-containing ester featuring a terminal triple bond flanked by an ethyl ester group. This structure enables direct incorporation into Sonogashira coupling reactions and other transition-metal-catalyzed transformations. The molecule exhibits high stability under standard conditions and offers predictable reactivity in C–C bond-forming processes.
Ethyl but-3-ynoate serves as a versatile building block in synthetic organic chemistry, enabling efficient access to substituted alkynes and conjugated systems. Its terminal alkyne functionality facilitates reliable copper-catalyzed azide-alkyne cycloaddition (CuAAC) and other transition-metal-mediated coupling reactions. The ester group provides compatibility with standard functional group manipulations, including reduction and nucleophilic addition, while the molecule exhibits good bench stability and ease of purification—making it well-suited for iterative synthesis and scale-up applications.
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GHS Pictogram :
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GHS No : GHS02,GHS07
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Signal Word : Warning
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UN#: 1993
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Class : 3
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Packing Group : Ⅲ
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Hazard Statements : H226-H315-H319-H335
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Precautionary Statements : P210-P233-P240-P241-P242-P243-P260-P264-P271-P280-P302+P352-P303+P361+P353-P304+P340-P305+P351+P338-P312-P332+P313-P337+P313-P362+P364-P370+P378-P403+P233-P403+P235-P405-P501
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Lot numbers can be found on the outside label of a product: