Mild one-pot conversion of carboxylic acids to amides or esters with Ph3P/trichloroisocyanuric acid
作者:Rogério da C. Rodrigues、Igor M.A. Barros、Edson L.S. Lima
DOI:10.1016/j.tetlet.2005.06.127
日期:2005.8
The reaction of trichloroisocyanuric acid (TCICA) and triphenylphosphine in the presence of a carboxylic acid results in the in situ formation of the corresponding acid chloride under mild conditions. Subsequent addition of amines or alcohols, in the presence of a tertiary amine affords the corresponding amides, or esters, in good to excellent yields. The methodology was applied to the synthesis of
The present invention pertains to an electrode layer comprising a porous film made of oxide semiconductor fine particles sensitized with certain methin dyes. Moreover the present invention pertains to a photoelectric conversion device comprising said electrode layer, a dye sensitized solar cell comprising said photoelectric conversion device and to novel methin dyes.
A Facile Conversion of (<i>Z</i>)-2-Alkenoic Esters into the (<i>E</i>)-Isomers with Diphenyl Disulfide
Diphenyl disulfide is shown to be an efficient catalyst for the isomerization of (Z)-2-alkenoic esters to (E)-2-alkenoic esters in boiling tetrahydrofuran.