The present invention relates to a novel process for preparing Lubiprostone and novel intermediates prepared from the process. The process of the present invention does not generate hydrogenated by-products that are difficult to be removed, and thus enables the production of Lubiprostone in an efficient and economical way.

The present invention relates to a new chemical synthesis, intermediates and catalysts useful for the preparation of the neprilysin (NEP) inhibitor sacubitril. It further relates to new intermediate compounds and their use for said new chemical synthesis route.

The present invention relates to a new chemical synthesis, intermediates and catalysts useful for the preparation of the neprilysin (NEP) inhibitor sacubitril. It further relates to new intermediate compounds and their use for said new chemical synthesis route.

The present invention relates to a method for producing an ?-aryl substituted carbonyl compound (e.g., an ?-aryl substituted cyclic ketone) from a carbonyl compound (e.g., a cyclic ketone) using an aryl halide or a heteroaryl halide and a photocatalyst (e.g., acridinium, helicenium, angulenium, or a combination thereof) in the presence of an amine compound. The method of the present invention is particularly useful in producing an ?-aryl substituted carbonyl compound (e.g., an ?-aryl substituted cyclic ketone) from an unactivated carbonyl compound (e.g., an unactivated cyclic ketone).

The present invention relates to a method for producing an ?-aryl substituted carbonyl compound (e.g., an ?-aryl substituted cyclic ketone) from a carbonyl compound (e.g., a cyclic ketone) using an aryl halide or a heteroaryl halide and a photocatalyst (e.g., acridinium, helicenium, angulenium, or a combination thereof) in the presence of an amine compound. The method of the present invention is particularly useful in producing an ?-aryl substituted carbonyl compound (e.g., an ?-aryl substituted cyclic ketone) from an unactivated carbonyl compound (e.g., an unactivated cyclic ketone).

The present invention relates to a new chemical synthesis, intermediates and catalysts useful for the preparation of the neprilysin (NEP) inhibitor sacubitril. It further relates to new intermediate compounds and their use for said new chemical synthesis route.

The present invention relates to a new chemical synthesis, intermediates and catalysts useful for the preparation of the neprilysin (NEP) inhibitor sacubitril. It further relates to new intermediate compounds and their use for said new chemical synthesis route.

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.

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.

A method of preparing succinic acid; the method comprising contacting glucose with an oxidizing catalyst under conditions to produce a first oxidized product; converting the first oxidized product to an aldehyde; and contacting the aldehyde with an acid catalyst under conditions suitable for the formation of succinic acid.