In the field of organic phosphorus chemistry, especially the chemistry of bulky organophosphorus compounds, a process for the synthesis of compound of formula (I). This process is especially useful to obtain chiral bulky phosphorus compounds. The present invention also relates to compounds of formula (VII), (VIII), (IX) and (X) and their processes of manufacturing starting from a compound of formula (I).

##STR00001##

Provided herein are organic long persistent luminescence compositions and methods of use and preparation thereof and articles comprising the same.

Disclosed are quantum dots and quantum dot articles stabilized by a stabilizing agent of the formula: ##STR00001##
wherein each R.sup.1 is a hydrocarbyl group including alkyl, aryl, alkaryl and aralkyl;
R.sup.2 is a divalent hydrocarbyl group selected from alkylene, arylene, alkarylene and aralkylene;
Z is P, As or Sb;
Q is CH.sub.2S, CH.sub.2O, CO.sub.2, CH2OCO, CONR.sup.3, NHCONR.sup.3, and NR.sup.3, where R.sup.3 is H or C.sub.1-C.sub.4 alkyl,
subscript x is 1,
R.sup.6 is a divalent hydrocarbyl group selected from alkylene, arylene, alkarylene and aralkylene,
subscript y is 0 or 1,
R.sub.f is a perfluoroether group.

Provided is a process for the conversion of a tertiary phosphine oxide to the corresponding tertiary phosphine, comprising at least reacting said tertiary phosphine oxide with a phosphite compound, in the presence of at least a catalyst. Furthermore, provided is a composition comprising at least a tertiary phosphine oxide and a phosphite compound, and optionally a catalyst.

A method of producing a phosphinyl carboxylic ester is provided. First a phosphinyl carboxylic acid is provided, then a diol is added to the phosphinyl carboxylic acid. Later, the phosphinyl carboxylic acid undergoes a condensation reaction with the diol in the presence of a basic compound to obtain a phosphinyl carboxylic ester mixture. The phosphinyl carboxylic ester mixture includes a phosphinyl monoester and a phosphinyl diester.

This application is directed to use of transition metal-ligand complexes to hydrogenate fluorinated esters and carboxamides into fluorinated hemiacetals. Methods for synthesis of certain ligands are also provided.

Provided is a process for the conversion of a tertiary phosphine oxide to the corresponding tertiary phosphine, comprising at least reacting said tertiary phosphine oxide with a phosphite compound, in the presence of at least a catalyst. Furthermore, provided is a composition comprising at least a tertiary phosphine oxide and a phosphite compound, and optionally a catalyst.

Provided are a water-soluble triarylphosphine for a palladium catalyst, which has high selectivity in a telomerization reaction and can be recovered with efficiency, an ammonium salt thereof, and a method for efficiently producing the same. Specifically, provided are bis(6-methyl-3-sulphophenyl)phenylphosphine; a bis(6-methyl-3-sulphonatopheyl)phenylphosphine diammonium salt obtained by reacting the phosphine with a tertiary amine having a total of 3 to 27 carbon atoms in groups bonded to one nitrogen atom; and a method for producing the same.

A compound represented by the structure of formula (I): ##STR00001## The compound is useful as a ligand for ruthenium to form an organometallic complex. The complex may be immobilized on an oxidic support to form an active, heterogeneous catalyst for the hydrogenolysis of amides to form amines and optionally alcohols.

The present invention discloses a fluorescent chromic material having a chemical formula of [PPy.sub.3Cu.sub.2I.sub.2].sub.n, wherein PPy.sub.3 is tripyridylphosphine. The present invention also provides a method for preparing the fluorescent chromic material, and the use of the fluorescent chromic material in the detection of dichloromethane vapor. The fluorescent chromic material of the present invention has simple synthesis steps, high yield, and capability of large production; and can be used as a fluorescent probe for detecting dichloromethane vapor. It has the advantages of simple operation, high selectivity, high sensitivity, good cycle performance and good stability.