Benzylation via Tandem Grignard reaction —iodotrimethylsilane (TMSI) mediated reduction
作者:Eric J. Stoner、Darlene A. Cothron、Mary K. Balmer、Brian A. Roden
DOI:10.1016/0040-4020(95)00659-v
日期:1995.10
initial formation of biarylmethanols via reaction of aryl Grignards with carbonyl compounds followed by a subsequent reduction with iodotrimethylsilane (TMSI). A number of improvements over existing literature procedures are reported as well as previously unobserved dimenzations. Studies reveal that as few as 3 equiv of TMSI will give complete reduction in most cases where either of the substituents are not
Decarboxylative dearomatization and mono-α-arylation of ketones
作者:Shehani N. Mendis、Jon A. Tunge
DOI:10.1039/c6cc03672d
日期:——
We report the first example of a palladium-catalyzeddecarboxylative dearomatization reaction that occurs via Pd-[small pi]-benzyl intermediates. In fact, the Pd-catalyzed decarboxylativecross-coupling reaction of benzyl enol carbonates can lead to...
Compounds of the formula (I)
1
as well as their pharmaceutically acceptable salts, and pharmaceutical compositions comprising the novel compounds. The novel compounds of the formula (I) are useful in the management of pain.
Novel diarylmethylpiperazine and diarylmethylphenyl compounds with analgesic effect
申请人:AstraZeneca AB
公开号:EP1408037A1
公开(公告)日:2004-04-14
Compounds of the formula (I)
as well as their pharmaceutically acceptable salts, and pharmaceutical compositions comprising the novel compounds. The novel compounds of the formula (I) are useful in the management of pain.
Na-promoted aerobic oxidation of alcohols to ketones
作者:Li-Hong Zhou、Xiao-Qi Yu、Lin Pu
DOI:10.1016/j.tetlet.2009.11.079
日期:2010.1
Aerobic oxidation of a number of diaryl and arylalkyl carbinols to ketones was promoted by Na in THF at room temperature with up to 99% yield. This new oxidation method is also selective with good efficiency for the oxidation of benzylic secondary alcohols but not for a primary alcohol or nonbenzylic secondary alcohols. Under nitrogen, a catalytic amount of Ni or transition metal halides such as COCl3, FeCl3, and NiCl3 in combination with Na was also found to conduct a dehydrogenation of a secondary alcohol to the corresponding ketone in high yield at room temperature. (C) 2009 Elsevier Ltd. All rights reserved.