88722-95-6Relevant articles and documents
Preparation of various carboxylic acid esters from bulky alcohols and carboxylic acids by a new type oxidation-reduction condensation using 2,6-dimethyl-1,4-benzoquinone
Mukaiyama, Teruaki,Kikuchi, Wataru,Shintou, Taichi
, p. 300 - 301 (2007/10/03)
A new-type oxidation-reduction condensation by using 2,6-dimethyl-1,4-benzoquinone (DMBQ), carboxylic acids and in situ formed alkoxydiphenylphosphines (1) including the bulky alkoxy group-substituted ones proceeded smoothly to afford the corresponding carboxylic acid esters in good to high yields. Alkoxydiphenylphosphines were formed in situ by treating either N,N-dimethylaminodiphenylphosphine (Ph2PNMe2) with primary or secondary alcohols or chlorodiphenylphosphine with the lithium salts of primary, secondary and tertiary alcohols.
DIRECT FORMATION OF FUNCTIONALIZED KETONES VIA THE COUPLING OF FUNCTIONALIZED ORGANOCOPPER REAGENTS WITH ACID CHLORIDES
Wehmeyer, Richard M.,Rieke, Reuben D
, p. 4513 - 4516 (2007/10/02)
Highly reactive copper solutions have been prepared by the lithium naphtalide reduction of copper(I) iodide/triphenyl-phosphine complex.These copper solutions react rapidly with functionalized alkyl halides to give organocopper reagents wich have been effectively trapped with acid chlorides giving functionalized ketones in good yields.Ester, nitrile, chloride, remote epoxide, and, to some degree, ketone groups can be tolerated by this approach.
Benzoyl Trifluoromethanesulphonate. A Highly Efficient Benzoylating Agent for Sterically Hindered Hydroxyl Groups
Koreeda, Masado,Brown, Lindsey
, p. 1113 - 1115 (2007/10/02)
Reactions of benzoyl trifluoromethanesulphonate (BzOTf) with a variety of alcohols, including some with sterically hindered secondary and tertiary hydroxy groups, with phenolic compounds, and with 1,2-diols at low temperatures provide the corresponding benzoates in high yield.