[EN] PHOSPHONIUM SALTS DERIVATIVES AND THEIR USE AS SOLUBILITY CONTROLLING AUXILIARIES<br/>[FR] DERIVES DE SELS DE PHOSPHONIUM, UTILISATION DE CES DERNIERS EN TANT QU'ADJUVANTS DE REGULATION DE LA SOLUBILITE
申请人:VALORISATION RECH SOC EN COMMA
公开号:WO2005097812A1
公开(公告)日:2005-10-20
The present invention relates to the use of compounds of formula (IA) or (IIA): insert formula (IA) and (IIA) from page 15 of the disclosure wherein A represents various substituted or unsubstituted groups such as furyl, phenyl, pyridyl, naphthyl, or thiophenyl; X- represents an anion; and L1 represents a linker, as solubility controlling auxiliaries. These compounds can also be used as solubility controlling fragments of a molecule. The invention also relates to various methods of controlling the solubility of a molecule or a substrate. Moreover, the invention also relates to various phosphonium supported reagents or various phosphonium salts derivatives.
A simple and convenient method for preparation of carboxylic acid alkyl esters, phenolic and thioesters using chlorodiphenylphosphine/I2 and imidazole reagent system
作者:Najmeh Nowrouzi、Abdol Mohammad Mehranpour、Javad Ameri Rad
DOI:10.1016/j.tet.2010.10.022
日期:2010.12
Condensation of carboxylicacids with alcohols, phenols and thiols proceeded smoothly to afford carboxylicacid alkyl esters, phenolic esters and thioesters by using the combination of chlorodiphenylphosphine, imidazole and molecular iodine in refluxing acetonitrile. Esterification with this mixed reagent system gave the corresponding products in excellent yields. The phosphorus-containing byproduct
Sodium cyanide‐promoted copper‐catalysed aerobic oxidative synthesis of esters from aldehydes
作者:Najmeh Nowrouzi、Mohammad Abbasi、Maryam Bagheri
DOI:10.1002/aoc.3766
日期:2017.11
A simple and efficient copper‐catalysed procedure for oxidativeesterification of aldehydes with alcohols and phenols mediated by sodium cyanide, using air as a clean oxidant, is described. A variety of aromaticaldehydes and structurally different alcohols and phenols reacted efficiently, and the product esters were obtained in good to excellent yields under normal atmospheric and solvent‐free conditions
There are provided compounds of formulas (VA), (VIA), (VIIA) (IXA), (XIA), (XIIA), (XIIIA), and (XIVA):
wherein A, Z, R
2
, X
−
, and L
2
represent various different possibilities.