692-48-8

Basic information

• Product Name: (E)-2,2,5,5-tetramethylhex-3-ene
• Synonyms: (E)-2,2,5,5-tetramethylhex-3-ene;(E)-2,2,5,5-Tetramethyl-3-hexene;Einecs 211-731-1
• CAS NO: 692-48-8
• Molecular Formula: C₁₀H₂₀
• Molecular Weight: 140.2658
• EINECS: 211-731-1
• Mol File: 692-48-8.mol
• Article Data: 13

Chemical Properties

• Melting Point: -4.9°C
• Boiling Point: 166.82°C (estimate)
• Appearance: /
• Density: 0.7631 (estimate)
• Refractive Index: 1.4090 (estimate)
• CAS DataBase Reference: (E)-2,2,5,5-tetramethylhex-3-ene(CAS DataBase Reference)
• NIST Chemistry Reference: (E)-2,2,5,5-tetramethylhex-3-ene(692-48-8)
• EPA Substance Registry System: (E)-2,2,5,5-tetramethylhex-3-ene(692-48-8)

Safety Data

• Hazardous Substances Data: 692-48-8(Hazardous Substances Data)

Usage

General Description

(E)-2,2,5,5-tetramethylhex-3-ene is a chemical compound also known as the fragrance ingredient Cosmofur 207 or hexamethylindene. It is a hydrocarbon with the chemical formula C10H20 and a molecular weight of 140.26 g/mol. (E)-2,2,5,5-tetramethylhex-3-ene is a colorless liquid with a fruity odor and is commonly used in the production of perfumes and fragrances. It is also used as a flavoring agent and in the manufacturing of various consumer products. (E)-2,2,5,5-tetramethylhex-3-ene is considered to be safe for use in cosmetics and personal care products when used at concentrations of less than 1%. However, it may cause irritation to the skin, eyes, and respiratory system at higher concentrations.

InChI:InChI=1S/C10H20/c1-9(2,3)7-8-10(4,5)6/h7-8H,1-6H3/b8-7+

Upstream product

• 22966-70-7 2,5-dichloro-2,5-dimethyl-hex-3t-ene 
• 75-16-1 methylmagnesium bromide 
• 75-11-6 diiodomethane 
• 692-47-7 (Z)-2,2,5,5-tetramethyl-3-hexene 
• 630-19-3 pivalaldehyde 
• 1070-83-3 tert-Butylacetic acid 
• 68446-90-2 [W(CCMe₃)(=CHCMe₃)(CH₂CMe₃)((dimethylphosphino)ethane)] 
• 10250-48-3 methyl 3,3-dimethylbutyrate 
• 70982-82-0 2-tert-Butyl-3-hydroxy-4,4-dimethyl-pentanoic acid 
• 53333-76-9 2,2-dimethyl-propane-1-sulfonyl chloride 
• 762-64-1 1-diazo-2,2-dimethylpropane 
• 23438-05-3 3,5-dibromo-2,2,6,6-tetramethyl-heptan-4-one 
• 166046-19-1 (2S,3R)-2,3-Di-tert-butyl-cyclopropanone 
• 57899-46-4 trans-2,3-Di-tert-butylthiiran-1,1-dioxid 

Downstream Products

• 1071-81-4 2,2,5,5-tetramethylhexane 
• 630-19-3 pivalaldehyde 
• 53399-90-9 1-((1R,2S)-1-tert-Butyl-2-chloro-3,3-dimethyl-butylsulfanyl)-4-chloro-benzene 
• 55073-86-4 2,2,5,5,-tetramethyl-3-hexanol 
• 692-47-7 (Z)-2,2,5,5-tetramethyl-3-hexene 
• 79802-56-5 1,1-dimethyl-2-(2,2-dimethylpropyl)cyclopropane 
• 79802-57-6 3-methoxy-2,2,5,5-tetramethylhexane 
• 79802-59-8 3-(hydroxymethyl)-2,2,5,5-tetramethylhexane 
• 53323-52-7 trans-(CH₃)3CCHCHC(CH₃)3Ni(P(OC₆H₄CH₃-o)3)2 
• 172585-06-7 (S,S)-(+)-1,2-bis(2-methylphenyl)ethane-1,2-diol 

Relevant articles and documents

Different Reactivity Modes of Cis and Trans Di-tert-butylthiiranium Tetrafluoroborates with Water. A New Insight in the Electrophilic Additions to Z and E Di-tert-butylethylenes

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A spontaneous fragmentation: From the Criegee zwitterion to coarctate Mobius aromaticity

The extremely fast fragmentation of the spiroozonides prepared from formaldehyde O-oxide and three-membered ring ketones proceeds via the coarctate transition state 1. The ozonides decompose at temperatures as low as -90°C to form carbon dioxide, alkene/alkyne, and formaldehyde (the topology of the structure of 1 is depicted on the right). The mechanism is in accordance with the rules for the stereochemical course of coarctate reactions.

Heterodiene cycloadditoins of C2 symmetric 4,5-disubstituted ketene acetals: the nett asymmetric conjugate addition of recyclable acetic ester enolate equivalents to an activated enone

Heterodiene cycloadditions of 3-formylchromone 2 to a series of ketene acetals 1 derived from C2 symmetric 1,2-diarylethane-1,2-diols are diastereoselective.From (S,S)-1,2-di(o-tolyl)ethane-1,2-diol 6c the major cycloadduct 3c was isolated by crystallization and transformed by acid-catalysed methanolysis into (S)-methyl 4-oxo-3,4-dihydro-2H-1-benzopyran-2-ylacetate 5, together with the original 1,2-diol 6c which could be recycled.The structures of two cyclic carbonates 22a and 22c were determined by X-ray diffraction and used as models in seeking a mechanistic rationale for the stereoselective cycloadditions of the analogous ketene acetals 1a and 1c.