The invention provides synthetic processes and synthetic intermediates that can be used to prepare a compound of formula (I): or a salt thereof.

The invention provides synthetic processes and synthetic intermediates that can be used to prepare a compound of formula (I): or a salt thereof.

The present invention pertains to: a Janus-type triptycene derivative which is capable of forming a self-assembled film which does not depend on the material quality of a substrate; a self-assembled film using said Janus-type triptycene derivative; a structure having said film on a surface thereof; a method for manufacturing said film; and an electronic device using said method.

The invention provides synthetic processes and synthetic intermediates that can be used to prepare a compound of formula (I): or a salt thereof.

The present disclosure relates to a recycling method for producing dimethyl carbonate and dimethyl carbonate derivatives. The process is unique in that it produces a by-product that can be re-used in the process as a raw material for repeating the process. For example, when the process is directed to synthesizing dimethyl carbonate, glycerol is used as a starting material. Glycerol is also a by-product produced during formation of dimethyl carbonate, and therefore it can be re-used as starting material to generate more dimethyl carbonate.

A method of producing dimethyl ether involving contacting methanol with a catalyst in the presence of oxygen in a reactor to form the dimethyl ether. The catalyst comprises manganese on a cerium oxide catalyst support, wherein a weight ratio of manganese to the cerium oxide catalyst support is in the range of 0.005 to 0.5. Further, a method of manufacturing the catalyst, including mixing cerium oxide (CeO.sub.2) with a solution comprising manganese salt and a solvent, evaporating the solvent, followed by drying and calcining to form a catalyst which comprises manganese on a cerium oxide catalyst support, wherein a weight ratio of manganese to the cerium oxide catalyst support is in the range of 0.005 to 0.5.

The invention relates to polyethers preparable in the presence of a DMC catalyst comprising polyether siloxanes, to processes for preparing the polyethers and to the use thereof.

An object of the present invention is to remove a compound A from sevoflurane containing fluoromethyl-1,1,3,3,3-pentafluoroisopropenyl ether (compound A) so as to collect high-purity sevoflurane. The present invention concerns a method for producing sevoflurane containing substantially no compound A, comprising the following steps of: bringing a composition containing hydrogen fluoride (HF) and water at a mass ratio of 1:1 to 1:30 into contact with a 1st organic liquid containing sevoflurane and a compound A, thereby obtaining a 2nd organic liquid containing the compound A in an amount that is lower than that in the 1st organic liquid (step 1a); and distilling the 2nd organic liquid under the presence of a degradation inhibitor, thereby obtaining sevoflurane containing substantially no compound A as a main distillation fraction (step 2).

Provided are a method for producing a terminal conjugated dienal compound without an oxidation reaction and a terminal hydroxyacetal compound useful as an intermediate in the method. More specifically, provided are a method for producing an (E)-dienal compound comprising the steps of: a metalation reaction of an alkynal acetal compound (1) to obtain an organic metal compound (2), an addition reaction of (2) to ethylene oxide to obtain a hydroxyalkynal acetal compound (3), a reduction reaction of (3) to obtain an (E)-hydroxyalkenal acetal compound (4), a functional group conversion reaction of (4) to obtain an (E)-alkenal acetal compound (5) having a leaving group X, an elimination reaction of (5) to obtain an (E)-dienal acetal compound (6), and a hydrolysis reaction of (6) to obtain the (E)-dienal compound (7); and others. ##STR00001##

Novel polyfluoroalkylated alkenes compounds prepared therefrom are described.