cas 66478-63-5, Di-t-butoxyethyne | Articles data

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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.
Gleiter, Rolf,Werz, Daniel B.,Rominger, Frank,Zhutov, Evgeny,Zefirov, Nikolay S.,Proskurnina, Marina V.
p. 5834 - 5839
(2007)
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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.
Bou, Anna,Pericas,Miquel A.,Serratosa, Felix
p. 1441 - 1449
(2007/10/02)