871-28-3

Basic information

• Product Name: 1-PENTEN-4-YNE
• Synonyms: 4-penten-1-yne;CH2=CHCH2CequivCH;pent-1-en-4-yne;vinyl(ethynyl)methane;ALLYL ACETYLENE;1-PENTEN-4-YNE;1-Penten-4-yne (6CI, 7CI, 8CI, 9CI)
• CAS NO: 871-28-3
• Molecular Formula: C₅H₆
• Molecular Weight: 66.1
• Mol File: 871-28-3.mol
• Article Data: 7

Chemical Properties

• Melting Point: -113°C (estimate)
• Boiling Point: 42-43°C
• Appearance: /
• Density: 0,78 g/cm3
• Vapor Pressure: 403mmHg at 25°C
• Refractive Index: 1.4125
• CAS DataBase Reference: 1-PENTEN-4-YNE(CAS DataBase Reference)
• NIST Chemistry Reference: 1-PENTEN-4-YNE(871-28-3)
• EPA Substance Registry System: 1-PENTEN-4-YNE(871-28-3)

Safety Data

• Statements: 36/37/38
• Safety Statements: 26-36/37/39
• Hazardous Substances Data: 871-28-3(Hazardous Substances Data)

Usage

Uses

1-?Penten-?4-?yne is a building block used in organic synthesis. Used in the synthesis of trocheliophorolides as well as in the enantioselective synthesis of nonracemic geminal silylboronates.

InChI:InChI=1/C5H6/c1-3-5-4-2/h1,4H,2,5H2

Upstream product

• 625-86-5 2,5-dimethylfuran 
• 3315-37-5 methylidyne 
• 13776-70-0 methylidyne(-d) radical 
• 106-98-9 1-butylene 
• 74-86-2 acetylene 
• 187737-37-7 propene 
• 542-92-7 cyclopenta-1,3-diene 
• 27784-30-1 (iodomethylene)cyclobutane 
• 6746-94-7 Cyclopropylacetylene 
• 871-84-1 1,7-Octadiyne 

Downstream Products

• 13891-87-7 pent-4-en-2-one 
• 841-34-9 6,6-Diphenyl-hexen-⁽¹⁾-in-⁽⁴⁾-ol-⁽⁶⁾ 
• 826-49-3 1-(pent-4-en-1-yn-1-yl)cyclohexan-1-ol 
• 782-49-0 6-(4-Nitro-phenyl)-hexen-⁽¹⁾-in-⁽⁴⁾-ol-⁽⁶⁾ 
• 829-55-0 1-phenylhex-5-en-2-yn-1-ol 
• 778-81-4 6-(2,4-Dichlor-phenyl)-hexen-⁽¹⁾-in-⁽⁴⁾-ol-⁽⁶⁾ 
• 775-97-3 6-Methyl-6-phenyl-hexen-⁽¹⁾-in-⁽⁴⁾-ol-⁽⁶⁾ 
• 34529-09-4 methyl cis-2-prop-2-ynyl-cyclopropanecarboxylate 
• 34529-09-4 methyl trans-2-prop-2-ynyl-cyclopropanecarboxylate 
• 67-66-3 chloroform 
• 67-72-1 hexachloroethane 
• 77962-98-2 4-Bromo-6,6,6-trichloro-hex-1-yne 
• 119481-03-7 2-[1-(Dimethyl-phenyl-silanyl)-meth-(E)-ylidene]-pent-4-enal 
• 119481-02-6 2-[1-(Dimethyl-phenyl-silanyl)-meth-(Z)-ylidene]-pent-4-enal 

Relevant articles and documents

Study of Methylidyne Radical (CH and CD) Reaction with 2,5-Dimethylfuran Using Multiplexed Synchrotron Photoionization Mass Spectrometry

At 298 K the reactions of 2,5-dimethlyfuran + CH(X2Θ) and + CD radicals were investigated using synchrotron radiation coupled with multiplexed photoionization mass spectrometry at the Lawrence Berkeley National Laboratory. Reaction products wer

Bimolecular rate constant and product branching ratio measurements for the reaction of C2H with ethene and propene at 79 K

The reactions of the ethynyl radical (C2H) with ethene (C 2H4) and propene (C3H6) are studied under low temperature conditions (79 K) in a pulsed Laval nozzle apparatus. Ethynyl radicals are formed by 193 nm photolysis of acetylene (C 2H2) and the reactions are studied in nitrogen as a carrier gas. Reaction products are sampled and subsequently photoionized by the tunable vacuum ultraviolet radiation of the Advanced Light Source (ALS) at Lawrence Berkeley National Laboratory. The product ions are detected mass selectively and time-resolved by a quadrupole mass spectrometer. Bimolecular rate coefficients are determined under pseudo-first-order conditions, yielding values in good agreement with previous measurements. Photoionization spectra are measured by scanning the ALS photon energy while detecting the ionized reaction products. Analysis of the photoionization spectra yields-for the first time-low temperature isomer resolved product branching ratios. The reaction between C2H and ethene is found to proceed by H-loss and yields 100% vinylacetylene. The reaction between C2H and propene results in (85 ± 10)% C4H4 (m/z = 52) via CH3-loss and (15 ± 10)% C5H6 (m/z = 66) by H-loss. The C 4H4 channel is found to consist of 100% vinylacetylene. For the C5H6 channel, analysis of the photoionization spectrum reveals that (62 ± 16)% is in the form of 4-penten-1-yne, (27 ± 8)% is in the form of cis-and trans-3-penten-1-yne and (11 ± 10)% is in the form of 2-methyl-1-buten-3-yne.

Zum Spalt- und Cyclisierungsverhalten von Octa-1,7-diin in der Gasphase

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