Hoechst Celanese Corporation

Diane E Allen

Ronald N DeMartino

Apurba Bhattacharya

Charles C Hobbs, Jr

Charles E Tucker

Ramakrishnan Chidambaram

Hyun-Nam Yoon

Cherylyn Lee

The present invention provides a process for preparing a 5,6-dihydro-3H-pyrimidin-4-one derivatives which comprises the steps of (a) dehydrating a N-acyl beta amino acid in the presence of a dehydration agent and an organic solvent for a sufficient period of time and under suitable temperature and pressure conditions to form an oxazone (b) adding a carboxylic acid and a primary amine salt of a carboxylic acid to said oxazone to form a mixture, (c) distilling azeotropically said mixture for a suitable period of time and under suitable temperature and pressure conditions to substantially remove said dehydration agent and said organic solvent, and (d) heating the product of step (c) for a sufficient period of time and under suitable temperature and pressure conditions to form said pyrimidin derivatives.

Process for preparing pyrimidine derivatives

The present invention provides a process for preparing a quinazolone which comprises the steps of (a) dehydrating a N-acyl beta amino acid in the presence of a dehydration agent and an organic solvent for a sufficient period of time and under suitable temperature and pressure conditions to form an oxazone (b) adding a carboxylic acid and a primary amine salt of a carboxylic acid to said oxazone to form a mixture, (c) distilling azeotropically said mixture for a suitable period of time and under suitable temperature and pressure conditions to substantially remove said dehydration agent and said organic solvent, and (d) heating the product of step (c) for a sufficient period of time and under suitable temperature and pressure conditions to form said quinazolone.

Process for preparing quinazolones

A process for preparing tertiary alkanols which comprises the step of oxidizing with ozone a saturated hydrocarbon having a tertiary carbon center in the presence of a carboxylic acid and for a sufficient period of time and at suitable temperature and pressure to form said alkanols.

Process for preparing alkanols

A process for preparing 6-chloro-2-hexanone which comprises the steps of (a) dehydrating cyclohexanol in the presence of a suitable catalyst and at a suitable temperature and for a sufficient period of time to form cyclohexene; (b) rearranging said cyclohexene at a higher temperature than in step (a) in the presence of a suitable catalyst and for a sufficient period of time to form 1-methylcyclopentene; (c) hydrating said 1-methylcyclopentene at a temperature lower than step (b) and in the presence of a resin catalyst for a sufficient period of time to form 1-methylcyclopentanol; (d) reacting said 1-methylcylcopentanol with a suitable amount of an alkali metal hypochlorite in the presence of a carboxylic acid to form 1-methylcyclopentyl hypochlorite; and (e) heating said 1-methylcyclopentyl hypochlorite for a sufficient period of time to form 6-chloro-2-hexanone.

Process for preparing omega-halo-ketones

A process for preparing 6-chloro-2-hexanone which comprises the steps of (a) oxidizing methylcyclopentane with ozone in the presence of a carboxylic acid and for a sufficient period of time to form 1-methylcyclopentanol; (b) reacting said 1-methylcyclopentanol with a suitable amount of an alkali metal hypochlorite in the presence of a carboxylic acid to form 1-methylcyclopentyl hypochlorite; and (c) heating said 1-methylcyclopentyl hypochlorite for a sufficient period of time to form 6-chloro-2-hexanone.

Process for preparing 6-chloro-2-hexanone from 1-methylcyclopentane

This invention provides novel side chain polymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in all-optical and electrooptical light switch and light modulator devices. An invention side chain polymer is illustrated by the following structure: ##STR1##

Isotropic acrylic polymer exhibiting nonlinear optical response

In one embodiment this invention provides polymalonamide polymers with side chains which exhibit nonlinear optical response. Illustrative of an invention polymalonamide is a polymer which has the following recurring monomeric structure: ##STR1##

Side chain condensation polymer which exhibits nonlinear optical response

In one embodiment this invention provides novel organic compounds and polymers characterized by a 1,4-bis(4-arylbutadienyl)benzene structure which exhibits third order nonlinear optical response. Illustrative of an invention compound is 1,4-bis[4-(4-N,N-dimethylaminophenyl)butadienyl]2,5-dinitrobenzene: ##STR1##

1,4-bis(4-arylbutadienyl) benzenes exhibiting nonlinear optical response

This invention provides novel side chain copolymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in all-optical and electrooptical light switch and light modulator devices. An invention side chain copolymer is illustrated by the following structure: ##STR1##

Growing community of inventors

Corpus Christi, TX, United States of America

Diane E Allen