The present disclosure relates to a method for preparation of 1,4-cyclohexanedimethanol. According to the present disclosure, two step reduction reactions are conducted using terephthalic acid as starting material, and an isomerization process for increasing the rate of trans isomers of CHDA is introduced therebetween, thereby providing a method capable of stably preparing CHDM with high rate of trans isomers.

The present disclosure relates to a method for preparation of 1,4-cyclohexanedimethanol. According to the present disclosure, two step reduction reactions are conducted using terephthalic acid as starting material, and an isomerization process for increasing the rate of trans isomers of CHDA is introduced therebetween, thereby providing a method capable of stably preparing CHDM with high rate of trans isomers.

An object is to provide a novel production method for 4-hydroxy-2-methylbenzoic acid that is suitable for industrial use. As a solution, a production method for 4-hydroxy-2-methylbenzoic acid that includes performing a step (I) of reacting a compound represented by general formula (1) with carbon dioxide to obtain a compound represented by general formula (2), and then a step (II) of dealkylating the compound represented by general formula (2), is provided.

An object is to provide a novel production method for 4-hydroxy-2-methylbenzoic acid that is suitable for industrial use. As a solution, a production method for 4-hydroxy-2-methylbenzoic acid that includes performing a step (I) of reacting a compound represented by general formula (1) with carbon dioxide to obtain a compound represented by general formula (2), and then a step (II) of dealkylating the compound represented by general formula (2), is provided.

A method for the synthesis of specialized pro-resolving mediators, structural isomers thereof and analogs thereof is disclosed herein. The method comprises reacting a compound of the formula (I):

##STR00001## wherein R.sub.1 is alkyl.sub.(C≤12), cycloalkyl.sub.(C≤12), alkenyl.sub.(C≤12), alkylidene.sub.(C≤12), alkynyl.sub.(C≤12), aryl, aralkyl, heteroaryl or heteroaralkyl; and X.sub.1, X.sub.2 and X.sub.3 are each independently hydroxy or OP, wherein P is a hydroxy protecting or hydroxy activating group; with a reducing agent under conditions sufficient to produce a compound of the formula (II):

##STR00002## wherein: R.sub.1, X.sub.1, X.sub.2 and X.sub.3 are as defined above.

Novel protectins, more specifically novel structural isomers and analogs of PD1 and PDX are also disclosed.

A method for the synthesis of specialized pro-resolving mediators, structural isomers thereof and analogs thereof is disclosed herein. The method comprises reacting a compound of the formula (I):

##STR00001## wherein R.sub.1 is alkyl.sub.(C≤12), cycloalkyl.sub.(C≤12), alkenyl.sub.(C≤12), alkylidene.sub.(C≤12), alkynyl.sub.(C≤12), aryl, aralkyl, heteroaryl or heteroaralkyl; and X.sub.1, X.sub.2 and X.sub.3 are each independently hydroxy or OP, wherein P is a hydroxy protecting or hydroxy activating group; with a reducing agent under conditions sufficient to produce a compound of the formula (II):

##STR00002## wherein: R.sub.1, X.sub.1, X.sub.2 and X.sub.3 are as defined above.

Novel protectins, more specifically novel structural isomers and analogs of PD1 and PDX are also disclosed.

A polymer includes a plurality of repeated polymerized units according to scheme (2):

##STR00001##

A polymer includes a plurality of repeated polymerized units according to scheme (2):

##STR00001##

A polymer is made from polymerization of CBDA monomers. The resulting polymer is thermally cleavable, making it recyclable when heated and degraded. The resulting intermediate material can be hydrolyzed back to initial starting material for synthesizing CBDA monomers.

A polymer is made from polymerization of CBDA monomers. The resulting polymer is thermally cleavable, making it recyclable when heated and degraded. The resulting intermediate material can be hydrolyzed back to initial starting material for synthesizing CBDA monomers.