66478-63-5

Basic information

• Product Name: Di-t-butoxyethyne
• Synonyms: Di-t-butoxyethyne;1,2-Bis(tert-butoxy)acetylene;2,2'-[1,2-Ethynediylbis(oxy)]bis[2-methylpropane];Di-tert-butoxyethyne;Di-t-butoxyacetylene
• CAS NO: 66478-63-5
• Molecular Formula: C₁₀H₁₈O₂
• Molecular Weight: 170.24872
• Mol File: 66478-63-5.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 180℃
• Flash Point: 49℃
• Appearance: /
• Density: 0.897
• CAS DataBase Reference: Di-t-butoxyethyne(CAS DataBase Reference)
• NIST Chemistry Reference: Di-t-butoxyethyne(66478-63-5)
• EPA Substance Registry System: Di-t-butoxyethyne(66478-63-5)

Safety Data

• Hazardous Substances Data: 66478-63-5(Hazardous Substances Data)

Upstream product

• 70525-93-8 (E)-1,2-bis(tert-butoxy)-1-chloroethene 
• 70525-97-2 (E)-1-bromo-1,2-di-tert-butoxy-ethene 
• 94045-49-5 1,2-di-tert-butoxyethene 
• 68470-81-5 meso-1,2-di-tert-butoxy-1,2-dichloroethane 
• 78968-64-6 meso-1,2-di-t-butoxy-1,2-dimethoxyethane 
• 68470-79-1 trans-2,3-di(tert-butoxy)-1,4-dioxane 

Downstream Products

• 104738-47-8 hexa-tert-butoybenzene 
• 13211-32-0 tert-butoxyacetic acid 
• 66478-66-8 3,4-di(tert-butoxy)cyclobut-3-ene-1,2-dione 
• 691-64-5 di-tert-butyl oxalate 

Relevant articles and documents

Insights into the molecular structure and reactivity of α,ω-dialkoxy- substituted ethyne and butadiyne

The molecular structure derived by X-ray crystallography and the He(I) photoelectron spectrum of bis(tert-butoxy)-butadiyne (4a) are reported. Bis(tert-butoxy)ethyne (3a) and 4a were treated with highly electrophilic [η2-bis(tert-butylsulfonyl)ethyne](carbonyl)(η5- cyclopentadienyl)cobalt (10). In both cases a CpCo-stabilized cyclobutadiene ring resulted substituted by two tert-butylsulfonyl groups and either two tert-butoxy groups (→11) or one tert-butoxy group and one tert-butoxyethynyl group (→12). The structural data of 11 and of (η4-tetrakis(tert-butoxy)cyclopentadienone)(cyclopentadienyl) cobalt (15) are reported and compared with related species. Wiley-VCH Verlag GmbH & Co. KGaA, 2007.

DIISOPROPOXY- AND DI-tert-BUTOXYETHYNE STABLE ACETYLENE DIETHERS

The rather stable acetylene diethers diisopropoxy- and di-t-butoxyethyne are prepared either from glyoxal or dioxane.Catalytic hydrogenation, acid-catalyzed hydration and formation of the corresponding hexacarbonyl dicobalt complexes are reported.