4208-54-2Relevant articles and documents
Chemoenzymatic approach to optically active 4-hydroxy-5-alkylcyclopent-2- en-1-one derivatives: An application of a combined circular dichroism spectroscopy and DFT calculations to assignment of absolute configuration
Frelek, Jadwiga,Karchier, Micha?,Madej, Daria,Michalak, Karol,R?zański, Pawe?,Wicha, Jerzy
, p. 300 - 306 (2014)
A series of representative optically active derivatives of 4-hydroxy-5-alkylcyclopent-2-en-1-one were prepared from the respective 2-furyl methyl carbinols via the Piancatelli rearrangement followed by the enzymatic kinetic resolution of racemates. Applicability of chiroptical methods (experimental and calculated electronic circular dichroism [ECD] and vibrational circular dichroism [VCD] spectra) to determine the absolute configuration of both stereogenic centers in 4-hydroxy-5-methylcyclopent-2-en-1-one was demonstrated. It was also demonstrated that the concurrent application of ECD and VCD spectroscopy can be used for the determination of the configuration of two stereogenic centers. Chirality 26:300-306, 2014. 2014 Wiley Periodicals, Inc.
N-Heterocyclic Carbene-Catalyzed Decarboxylative Alkylation of Aldehydes
Ishii, Takuya,Kakeno, Yuki,Nagao, Kazunori,Ohmiya, Hirohisa
supporting information, p. 3854 - 3858 (2019/04/25)
We found that N-heterocyclic carbene catalysis promoted the unprecedented decarboxylative coupling of aryl aldehydes and tertiary or secondary alkyl carboxylic acid-derived redox-active esters to produce aryl alkyl ketones. The mild and transition-metal-free reaction conditions are attractive features of this method. The power of this protocol was demonstrated by the functionalization of pharmaceutical drugs and natural product. A reaction pathway involving single electron transfer from an enolate form of Breslow intermediate to a redox ester followed by recombination of the resultant radical pair to form a carbon-carbon bond is proposed.
RUTHENIUM COMPLEX AND PROCESS FOR PRODUCING TERT-ALKYL ALCOHOL THEREWITH
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Page/Page column 7-8, (2010/11/28)
A tert-alkyl ketone, pinacolone was hydrogenated under pressurized hydrogen in the presence of a ruthenium complex (S)-1 and a base, and corresponding (S)-3,3,-dimethyl-2-butanol was thereby obtained in 100% yield and 97% ee.