10602-34-3Relevant articles and documents
2,4,4,6-Tetrabromo-2,5-cyclohexadienone (TABCO) as a versatile, efficient, and chemoselective catalyst for the acetalization and transacetalization of carbonyl compounds, the preparation of acetonides from epoxides and acylals (1,1-diacetates) from aldehydes
Firouzabadi, Habib,Iranpoor, Nasser,Shaterian, Hamid Reza
, p. 2195 - 2205 (2002)
The efficient and chemoselective preparation of acetals and ketals from carbonyl compounds, transacetalization reactions, the conversion of epoxides to acetonides, and the preparation of acylals from aldehydes in the presence of catalytic amounts of 2,4,4,6-tetrabromo-2,5-cyclohexadienone (TABCO) are described.
Kinetic resolution in asymmetric epoxidation using iminium salt catalysis
Bulman Page, Philip C.,Appleby, Louise F.,Chan, Yohan,Day, David P.,Buckley, Benjamin R.,Slawin, Alexandra M. Z.,Allin, Steven M.,McKenzie, Michael J.
, p. 8074 - 8082 (2013/09/12)
The first reported examples of kinetic resolution in epoxidation reactions using iminium salt catalysis are described, providing up to 99% ee in the epoxidation of racemic cis-chromenes.
Kinetic resolution of 1,2-diols through highly site- and enantioselective catalytic silylation
Zhao, Yu,Mitra, Aurpon W.,Hoveyda, Amir H.,Snapper, Marc L.
, p. 8471 - 8474 (2008/09/18)
(Chemical Equation Presented) Resolved to silylate: A chiral silylation catalyst is used for kinetic resolution of three classes of acyclic 1,2-diols. The catalyst differentiates, with excellent precision, between the two hydroxy groups of a substrate. The majority of the diols, obtained in high enantiomeric purity, cannot be accessed with similar stereochemical purity through catalytic asymmetric dihydroxylation.
W-bromosuccinimide (NBS) as a powerful and chemoselective catalyst for acetalization of carbonyl compounds under almost neutral reaction conditions
Karimi, Babak
, p. 1456 - 1458 (2007/10/03)
Highly efficient and mild acetalization of various types of carbonyl compounds was achieved using NBS under almost neutral reaction conditions. Due to the neutrality of the medium this method is especially useful for the protection of acid sensitive substrates. Thieme Stuttgart.
REDUCTION OF GEM-DICHLOROCYCLOPROPANES BY HYDRAZINE HYDRATE IN THE PRESENCE OF RANEY NICKEL
Molchanov, A. P.,Kalyamin, S. A.,Kostikov, R. R.
, p. 1366 - 1368 (2007/10/03)
The reduction of gem-dichlorocyclopropane compounds with hydrazine hydrate in the presence of Raney nickel in alcohols takes place selectively with the formation of monochlorocyclopropanes. he ratio of the E and Z isomers depends on the structure of the initial dichloride.
Action d'organometalliques sur les dialkylphenylorthoformiates. Preparation facile d'acetals
Barbot, Francis,Poncini, Laurence,Randrianoelina, Benjamin,Miginiac, Philippe
, p. 4016 - 4035 (2007/10/02)
The reaction of dialkylphenylorthoformiates with organometallic compounds proceeds with a good yield, at room temperature, giving the corresponding dialkylacetals ; it allows an easy preparation of acetals which are otherwise difficult to prepare.