2798-73-4

Basic information

• Product Name: 1-METHOXY-1-BUTEN-3-YNE
• Synonyms: 1-METHOXY-1-BUTEN-3-YNE;1-BUTEN-3-YNYL METHYL ETHER;1-methoxy-1-buten-3-yn;but-1-en-3-ynylmethylether;1-METHOXY-1-BUTEN-3-YNE 50% SOLN. IN METHANOL-WATER (4 TO 1);Methyl 1-butene-3-ynyl ether;1-Buten-3-yne, 1-methoxy-;1-Methoxybutene-1-yne-3
• CAS NO: 2798-73-4
• Molecular Formula: C₅H₆O
• Molecular Weight: 82.1
• EINECS: 220-531-3
• Mol File: 2798-73-4.mol
• Article Data: 8

Chemical Properties

• Boiling Point: 89.95°C (rough estimate)
• Flash Point: °C
• Appearance: Clear green-brown to brown-purple/Solution
• Density: 0.9060
• Vapor Pressure: 16mmHg at 25°C
• Refractive Index: 1.4818
• CAS DataBase Reference: 1-METHOXY-1-BUTEN-3-YNE(CAS DataBase Reference)
• NIST Chemistry Reference: 1-METHOXY-1-BUTEN-3-YNE(2798-73-4)
• EPA Substance Registry System: 1-METHOXY-1-BUTEN-3-YNE(2798-73-4)

Safety Data

• Hazardous Substances Data: 2798-73-4(Hazardous Substances Data)

Usage

General Description

1-Methoxy-1-buten-3-yne is an organic chemical compound with the molecular formula C5H6O. It is a colorless liquid that is insoluble in water but soluble in organic solvents. 1-METHOXY-1-BUTEN-3-YNE is used as a starting material in organic synthesis, particularly in the production of other organic compounds. It is also used as a building block in the synthesis of pharmaceuticals and agrochemicals. Additionally, it has potential applications in the production of specialty polymers and as a reagent in chemical research and development. 1-Methoxy-1-buten-3-yne is a versatile compound with a range of potential uses in various industries.

InChI:InChI=1/C5H6O/c1-3-4-5-6-2/h1,4-5H,2H3/b5-4-

Upstream product

• 67-56-1 methanol 
• 460-12-8 Butadiyne 
• 821-10-3 1,4-Dichloro-2-butyne 
• 5929-72-6 2,7-dimethyl-octa-3,5-diyne-2,7-diol 
• 3685-20-9 (E)-1-methoxybut-1-en-3-yne 
• 118452-34-9 4-iodo-1-methoxybut-1-en-3-yne 
• 83682-45-5 1,4-dichloro-1-butyne 
• 85415-22-1 trans-2,3-dibromo-1,4-dichloro-2-butene 
• 1987-33-3 6-methoxy-2-methyl-hex-5-en-3-yn-2-ol 
• 124-41-4 sodium methylate 

Downstream Products

• 51306-09-3 1,8-dimethoxyoctane 
• 4652-27-1 4-methoxy-3-buten-2-one 
• 101169-39-5 1,4-bis-(4-methoxy-but-3-en-1-ynyl)-cyclohexa-2,5-diene-1,4-diol 
• 5910-87-2 (E,E)-2,4-nonadienal 
• 17053-80-4 cis-1-Methoxy-penten-(1)-in-(3) 
• 95836-15-0 E,E,E,E-2,4,6,8-Undecatetraenal 
• 5436-21-5 acetylacetaldehyde dimethyl acetal 
• 91145-97-0 7-methoxy-3,6-dioxa-9-decyn-1-ol 
• 91145-96-9 7-(2-propynyl)-3,6,8,11-tetraoxatridecane-1,13-diol 
• 33639-45-1 3-butynal dimethyl acetal 
• 154116-17-3 1-methoxy-4-(4-methoxy-3-buten-1-ynyl)benzene 
• 75817-60-6 2-(1-Hydroxy-ethyl)-3-((Z)-4-methoxy-but-3-en-1-ynyl)-cyclohexanone 
• 128683-66-9 9-hydroxy-1-methoxy-6-(phenylthio)non-1-en-3-yn-5-one 
• 76080-85-8 (2E,4E,6E,8E)-9-Cyclohexyl-nona-2,4,6,8-tetraenal 

Relevant articles and documents

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Characterization of the key aroma compounds in apricots (Prunus armeniaca) by application of the molecular sensory science concept

An aroma extract dilution analysis applied on an aroma distillate prepared from fresh apricots revealed (R)-γ-decalactone, (E)-β-damascenone, δ-decalactone, and (R/S)-linalool with the highest flavor dilution (FD) factors among the 26 odor-active compounds identified. On the basis of quantitative measurements performed by application of stable isotope dilution assays, followed by a calculation of odor activity values (OAVs), β-ionone, (Z)-1,5-octadien-3-one, γ-decalactone, (E,Z)-2,6-nonadienal, linalool, and acetaldehyde appeared with OAVs >100, whereas in particular certain lactones, often associated with an apricot aroma note, such as γ-undecalactone, γ-nonalactone, and δ-decalactone, showed very low OAVs (5). An aroma recombinate prepared by mixing the 18 most important odorants in concentrations as they occurred in the fresh fruits showed an overall aroma very similar to that of apricots. Omission experiments indicated that previously unknown constituents of apricots, such as (E,Z)-2,6-nonadienal or (Z)-1,5-octadien-3-one, are key contributors to the apricot aroma.

Reactions of Unsaturated Azides, 8. - Azidobutatriene and Azidobutenynes

When 1-azido-4-chloro-2-butyne (11), obtained from 1,4-dichloro-2-butyne (10), is treated with sodium hydroxide in methanol, 4-ethynyl-1H-1,2,3-triazole (19) is the main product besides the two triazoles 9 and 21.On the way from 11 to 19 and 21 azidobutatriene (14) most probably acts as a short-lived intermediate leading to five-membered heterocyclic compounds as azidoallenes do.In contrast to 14, the azidobutenynes 23 and 27 are relatively stable.They mainly give 2H-azirines (24, 28) on thermolysis and photolysis. - Keywords: Azidobutatriene, ring closure of; Triazole, preparation via azidobutatriene; Azirines