The present invention relates to the field of organic synthesis and more precisely to a process for the synthesis of an unsaturated aldehyde or ketone by oxidation of the corresponding alcohol. The oxidation is performed by a hypochlorite salt and a catalytic amount of a N-(2,2,6,6-tetraalkyl-4-piperidinyl-N-oxyl)-2-amino-1,3,5-triazine compound, preferably a N-oxyl derivative of one of the polymers known under the trademark Chimassorb.RTM. 944 or 2020.

Described is a process for reducing the fluoride content of products prepared in a process utilizing a fluorophosphite-containing transition metal complex catalyst, involving contacting the products with an adsorbent.

Phosphine compounds represented by the following formula (1): ##STR00001## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 represent substituents, and asymmetric synthesis catalysts containing transition metal phosphine complexes with the compounds contained as ligands therein.The novel phosphine compounds according to the present invention are useful especially as ligands in transition metal complexes. The transition metal phosphine complexes are useful as catalysts for...

The present invention relates to a hydroformylation method by conversion of olefins or olefinically unsaturated compounds in the presence of at least one rhodium compound and in the presence of sulfonated arylphosphines in ionic liquids, which are based on a quaternary singly-charged ammonium ion or the equivalent of a multiply charged ammonium ion and organic sulfonates or sulfates.

A process for the preparation of a novel intermediate compound useful in the preparation of phytone and vitamin E.

A process for preparing acylfluorides by reaction of carbonyl fluoride COF.sub.2 with compounds having general formula: T=CR.sub.1R.sub.2 (I) wherein: T is O or CF.sub.2 R.sub.1 and R.sub.2, equal or different, are F or a R(O).sub.t radical, wherein R=linear or branched C.sub.1 C.sub.7 (per)fluoroalkyl, optionally containing one or more oxygen atoms, t is an integer equal to zero or 1; wherein a catalyst supported on porous compound is used, the catalyst being selected from: CsF, RbF, KF, AgF, e...

In a process for heterogeneously catalyzed partial gas phase oxidation of propene to acrolein, the starting reaction gas mixture is oxidized at a propene loading of <160 l (STP) of propene/l of fixed catalyst bedh over a fixed catalyst bed which is accommodated in two successive reaction zones A, B, the highest temperature of the reaction gas mixture within reaction zone A being above the temperature of the reaction gas mixture within reaction zone B.

A method for producing a ketone, particularly a macrocyclic ketone, from a 2-hydroxycycloalkanone having from 12 to 18 carbon atoms by efficiently dehydrating and reducing the acyloin in a single reaction vessel. A method for producing a ketone compound, which comprises dehydrating and reducing an acyloin in the coexistence of an acid catalyst and a reduction catalyst and in the presence of hydrogen, particularly using a 2-hydroxycycloalkanone having from 12 to 18 carbon atoms as the acyloin.

Functionalized nanoscale carbon fibers and tubes of the formula: ##STR00001## wherein Ar is selected from the group consisting of: ##STR00002## wherein R is selected from the group consisting of H, H.sub.3C--(CH.sub.2).sub.n-- and ##STR00003## wherein n has a value of 0 10. Also provided is a process for functionalizing nanoscale carbon fibers or tubes.

The invention relates to a process for preparing hydroperoxides from their corresponding hydrocarbons which comprises oxidizing said hydrocarbons, particularly ethylbenzene, with an oxygen containing gas in the presence of a catalyst comprising a cyclic imide compound and a compound selected from the group consisting of an alkali metal compound or mixture thereof.