Described are methods for preparing phenols, benzene carboxylic acids, esters and anhydrides thereof from furanic compounds by reaction with a dienophile, wherein the furanic compounds are reacted with a hydrazine and/or oxime and then reacted with a dienophile.

Described are methods for preparing phenols, benzene carboxylic acids, esters and anhydrides thereof from furanic compounds by reaction with a dienophile, wherein the furanic compounds are reacted with a hydrazine and/or oxime and then reacted with a dienophile.

Described are methods for preparing phenols, benzene carboxylic acids, esters and anhydrides thereof from furanic compounds by reaction with a dienophile, wherein the furanic compounds are reacted with a hydrazine and/or oxime and then reacted with a dienophile.

A polymerizable compound has a practical low melting point, excellent solubility in a general-purpose solvent, and can produce an optical film at low cost, exhibits low reflected luminance, and achieves uniform conversion of polarized light over a wide wavelength band, an optically anisotropic article. A carbonyl compound is useful as a raw material for producing the polymerizable compound. (In the formula (I), Y.sup.1 to Y.sup.8 represent C(O)O, G.sup.1 and G.sup.2 represent a C.sub.1-20 divalent linear aliphatic group, Z.sup.1 and Z.sup.2 represent a C.sub.2-10 alkenyl group that is unsubstituted, or substituted with a halogen atom, A.sup.x represents a C.sub.2-30 organic group with at least one aromatic ring, A.sup.y represents a hydrogen atom or C.sub.1-20 alkyl group, A.sup.1 represents a trivalent aromatic group, A.sup.2 and A.sup.3 represent a C.sub.3-30 divalent alicyclic hydrocarbon group, A.sup.4 and A.sup.5 represent a C.sub.6-30 divalent aromatic group or the like, and Q.sup.1 represents a hydrogen atom.) ##STR00001##

A process for the synthesis of the intermediate useful for the preparation of 1,3,4-triazines, are disclosed.

A process for the synthesis of the intermediate useful for the preparation of 1,3,4-triazines, are disclosed.

A process for the synthesis of the intermediate useful for the preparation of 1,3,4-triazines, are disclosed.

A method of conversion of thioimidates into amidines includes reacting a starting material compound including a thioimidate with a nitrogen-containing reagent to form a product compound including an amidine in place of the thioimidate in the starting material compound. The nitrogen-containing reagent includes a primary amine, a secondary amine, an ammonium salt, or a combination thereof. The thioimidate includes SR.sup.1, wherein R.sup.1 is substituted or unsubstituted (C.sub.1-C.sub.20)hydrocarbyl. A method of forming a cyclized product includes intramolecularly reacting an amidine with a carbonyl carbon to form the cyclized product including a 4H-imidazolone and/or a derivative thereof.

A method of conversion of thioimidates into amidines includes reacting a starting material compound including a thioimidate with a nitrogen-containing reagent to form a product compound including an amidine in place of the thioimidate in the starting material compound. The nitrogen-containing reagent includes a primary amine, a secondary amine, an ammonium salt, or a combination thereof. The thioimidate includes SR.sup.1, wherein R.sup.1 is substituted or unsubstituted (C.sub.1-C.sub.20)hydrocarbyl. A method of forming a cyclized product includes intramolecularly reacting an amidine with a carbonyl carbon to form the cyclized product including a 4H-imidazolone and/or a derivative thereof.

This invention relates to materials and methods for iodine capture from a variety of sources and media, and at water/organic solvent interfaces.