Patent classifications
C07C45/40
Oxone-aceton mediated metal free preparation of syn-diols
The present invention disclose a simple and high yielding process of Oxone-acetone mediated metal free syn-dihydroxylation of benzo fused olefins of formula (II) to obtain library of dioxolo compounds of formula (I). The invention further disclose a simple and high yielding process of Oxone-acetone mediated metal free syn-dihydroxylation of stilbene and its derivatives of formula (III) thereof. Also disclosed herein is Wacker-type oxidation of benzo-fused olefins of formula (X). The invention further disclose compounds of formula (I) which can be useful for the treatment of HIV, cancer or malaria. ##STR00001##
Continuous process for the ozonolysis of lignin to yield aromatic monomers
A method for processing lignin may comprise flowing a lignin composition comprising a lignin polymer and a solvent through a reaction chamber of a continuous flow reactor, the lignin polymer comprising hydroxycinnamic groups bound to a polymeric backbone; flowing ozone through the reaction chamber containing the lignin composition under conditions to maximize oxidative cleavage of the hydroxycinnamic groups to produce one or more types of aromatic monomers while minimizing oxidative cleavage of the polymeric backbone; and collecting the one or more types of aromatic monomers, e.g., by a size-selective membrane separation device.
Continuous process for the ozonolysis of lignin to yield aromatic monomers
A method for processing lignin may comprise flowing a lignin composition comprising a lignin polymer and a solvent through a reaction chamber of a continuous flow reactor, the lignin polymer comprising hydroxycinnamic groups bound to a polymeric backbone; flowing ozone through the reaction chamber containing the lignin composition under conditions to maximize oxidative cleavage of the hydroxycinnamic groups to produce one or more types of aromatic monomers while minimizing oxidative cleavage of the polymeric backbone; and collecting the one or more types of aromatic monomers, e.g., by a size-selective membrane separation device.
Ozone-facilitated selective oxidation of alkanes in liquid carbon dioxide
A process for the ozonolysis of an alkane may comprise combining an alkane and ozone in a liquid phase medium comprising CO.sub.2 under conditions sufficient to oxidize the alkane to produce one or more non-combustion products. The liquid phase medium may be free of a super acid.
Ozone-facilitated selective oxidation of alkanes in liquid carbon dioxide
A process for the ozonolysis of an alkane may comprise combining an alkane and ozone in a liquid phase medium comprising CO.sub.2 under conditions sufficient to oxidize the alkane to produce one or more non-combustion products. The liquid phase medium may be free of a super acid.
Ozone-facilitated selective oxidation of alkanes in liquid carbon dioxide
A process for the ozonolysis of an alkane may comprise combining an alkane and ozone in a liquid phase medium comprising CO.sub.2 under conditions sufficient to oxidize the alkane to produce one or more non-combustion products. The liquid phase medium may be free of a super acid.
Uses of vanadium to oxidize aldehydes and ozonides
The present invention relates to uses of vanadium to convert aldehydes and ozonides into their respective acids and/or ketones. More particularly, this invention relates to the oxidative work-ups following ozonolysis using vanadium during ozonolysis, and using vanadium to oxidize aldehydes in general. The invention also relates to methods comprising the ozonolysis of oleyl alcohol in the presence of either an acid or an alcohol.
Uses of vanadium to oxidize aldehydes and ozonides
The present invention relates to uses of vanadium to convert aldehydes and ozonides into their respective acids and/or ketones. More particularly, this invention relates to the oxidative work-ups following ozonolysis using vanadium during ozonolysis, and using vanadium to oxidize aldehydes in general. The invention also relates to methods comprising the ozonolysis of oleyl alcohol in the presence of either an acid or an alcohol.
Uses of vanadium to oxidize aldehydes and ozonides
The present invention relates to uses of vanadium to convert aldehydes and ozonides into their respective acids and/or ketones. More particularly, this invention relates to the oxidative work-ups following ozonolysis using vanadium during ozonolysis, and using vanadium to oxidize aldehydes in general. The invention also relates to methods comprising the ozonolysis of oleyl alcohol in the presence of either an acid or an alcohol.
Flow-through reactors for the continuous quenching of peroxide mixtures and methods comprising the same
This disclosure relates to a highly efficient and safe reactor for the continuous quenching of peroxide mixtures generated during the reaction of unsaturated compounds with ozone, which minimizes the amount of highly reactive peroxides accumulated in the reactor at any given time. The reactor may be modified to allow for expansion to accommodate the quenching parameters of a wide variety of ozonolysis reactions and flow rates. The reactor may be constructed from highly pressure rated stainless steel for maximum durability, safety, and economic practicality while increasing the safety of peroxide quenching, thus allowing tighter process control and improved product yields. This disclosure also related to methods for quenching ozonides.