Abstract: The present invention provides novel diazonaphthoquinonesulfonic acid bisphenol derivatives. More particularly, the present invention relates to photo restive coating comprising alkali-soluble resin, a photoactive compound and a surfactant. The photoresist film prepared has less then one micron. The photoactive compound is soluble or swellable in aqueous alkaline solutions and is diazonaphthoquinonesulfonic bisphenol esters of the general formula (A), wherein DNQ represents a 2-Diazo-1-naphthoquinone-4-sulfonyl, 2-Diazo-1-naphthoquinone-5-sulfonyl, 1-Diazo-2-naphthoquinone-4-sulfonyl groups and R1 R1 represents an alkyl, aryl and substituted aryl groups. The invention also provides a process for coating and imaging the light-sensitive composition.

Abstract: The present invention provides a novel sensor for the estimation of total cholesterol in human blood serum using molecular imprint of cholesterol. Human blood serum contains 150-250 mg/dl cholesterol. The present invention provides a sensor device and a process for the fabrication of ISFET (Ion Selective Field Effect Transister) coated with molecular imprint of cholesterol on the SiO2+Si3N4 dielectric gate of the said electrode. The molecular imprint of cholesterol (MIPC) anchored in to a silica matrix sensing material is identified as a sensing material which has specific selectivity towards the cholesterol in presence of other organic constituents in human blood serum.

Abstract: The present invention relates to the development of a biosensor to determine potassium in human blood serum using dibenzo-18-crown-6 (DB18C6) as ionophore. Human blood serum contains potassium in ppm levels i.e 137 to 200 mg/litre and sodium co exists with a 30 times higher concentration. Such a high concentration tends to interfere the selectivity towards potassium, but DB18C6 proves to have an excellent selectivity towards potassium and is highly sensitive to the lowest concentration of potassium levels present in the human blood serum. So the present invention reports the fabrication and characterization of ISFET (Ion Selective Field Effect transistor) coated with a monolayer of crown ether, dissolved in chloroform, on the gate of electrode.

Abstract: The present invention provides a novel sensor for the estimation of total cholesterol in human blood serum using molecular imprint of cholesterol. Human blood serum contains 150-250 mg/dl cholesterol. The present invention provides a sensor device and a process for the fabrication of ISFET (Ion Selective Field Effect Transister) coated with molecular imprint of cholesterol on the SiO2+Si3N4 dielectric gate of the said electrode. The molecular imprint of cholesterol (MIPC) anchored in to a silica matrix sensing material is identified as a sensing material which has specific selectivity towards the cholesterol in presence of other organic constituents in human blood serum.

Abstract: The present invention provides novel diazonaphthoquinonesulfonic acid bisphenol derivatives. More particularly, the present invention relates to photo restive coating comprising alkali-soluble resin, a photoactive compound and a surfactant. The photoresist film prepared has less then one micron. The photoactive compound is soluble or swellable in aqueous alkaline solutions and is diazonaphthoquinonesulfonic bisphenol esters of the general formula (A), wherein DNQ represents a 2-Diazo-1-naphthoquinone-4-sulfonyl, 2-Diazo-1-naphthoquinone-5-sulfonyl, 1-Diazo-2-naphthoquinone-4-sulfonyl groups and R1 R1 represents an alkyl, aryl and substituted aryl groups. The invention also provides a process for coating and imaging the light-sensitive composition.

Abstract: The invention concerns the use of a solid basic catalyst comprising a hydrotalcite structure wherein part at least of the compensating anions are fluoride anions F? for producing Knoevenagel of Michael condensation reactions. The invention also concerns novel solid basic catalysts comprising a hydrotalcite structure characterized by a Mg/Al molar ratio ranging between 2.5 and 3.8 wherein at least part of the compensating anions are fluoride anions F?, and methods for preparing said novel catalysts.

Abstract: Processes for the preparation of nanopalladium (0) catalysts are disclosed. In some embodiments, the nanopalladium (0) catalysts may be reusable. In some embodiments, the nanopalladium (0) catalysts may be heterogeneous. Nanopalladium (0) catalysts may be employed for preparing coupling products by C—C bond formation through reaction of haloarenes in the presence of base. Haloarenes used in the coupling reaction may include chloroarenes that are typically unreactive. The use of heterogeneous nanopalladium catalyst may preclude the presence of trace amounts of palladium in the final coupling product.

Abstract: The present invention provides a supported osmate useful as a reusable catalyst in the preparation of vicinal diols. The present invention also relates to a process for the preparation of supported osmates of the formula (S—NR3)2OsO4.nH2O wherein S is a support, R is an alkyl group, n is the number of water molecules and use thereof in the preparation of vicinal diols by asymmetric dihydroxylation (AD) of olefins in presence of cinchona alkaloid compounds.

Abstract: The present invention relates to design and preparation of LDH-diisopropylamide through simple exchange process for the first time and its use in catalytic amounts for preparing aldols/&agr;,&bgr;-unsaturated nitriles/&agr;,&bgr;-unsaturated esters/transesterified products/&bgr;-nitroalkanols/Michael adducts and epoxide, resulting in higher yields.

Abstract: The present invention relates to a novel process for the preparation of a reusable heterogeneous nanopalladium (0) catalysts, which is a eco-friendly and economical process employing re-usable heterogeneous catalyst in place of soluble palladium catalysts for preparing coupling products by C—C bond formation reaction of haloarenes that include unreactive chloroarenes in the presence of base. The use of heterogeneous nanopalladium catalyst precludes the presence of palladium in traces with the product.

Abstract: The present invention provides an ecofriendly process for the preparation 2-nitrothiophenes selectively from thiophene, using metal exchanged clay catalysts and nitric acid, dispensing with the use of acetic anhydride.

Abstract: The present invention provides an ecofriendly method for preparing dinitramidic acid and its salts by nitration of ammonium sulfamate with fuming nitric acid as a nitrating agent using solid acid catalysts selected from the group consisting of a montmorillonite clay catalyst and metal ion exchanged K10 montmorillonite clay catalysts and surface supported catalysts and preparation of ammonium dinitramide by neutralization of the dinitramidic acid with ammonia and separation of ammonium dinitramide.

Abstract: The present invention relates to a multifunctional reusable catalyst and to a process for the preparation thereof on a single matrix of the support to perform multicomponent reaction in a single pot. The multifunctional catalysts of the invention are useful for the synthesis of chiral vicinal diols by tandem and/or simultaneous reactions involving Heck coupling, N-oxidation and AD reaction of olefins in presence of cinchona alkaloid compounds both as an native one and immobilized one in the said matrix support. This invention also relates to a process for preparing vicinal diols by asymmetric dihydroxylation of olefins in presence of cinchona alkaloid compounds employing reusable multifunctional catalysts as heterogeneous catalysts in place of soluble osmium catalysts.

Abstract: This invention relates to a process for the nitration of xylene isomers by using zeolite-beta as a catalyst. This invention particularly relates to a process for the nitration of xylenes using solid acid catalyst, thus totally eliminating the disposal of spent acid and salts. Herein we describe the nitration of disubstituted benzenes, all the isomers of xylene, by employing nitric acid and beta zeolite catalyst dispensing the use of acetic anhydride.

Abstract: The present invention provides a supported osmate useful as a reusable catalyst in the preparation of vicinal diols. The present invention also relates to a process for the preparation of supported osmates of the formula (S—NR3)2OsO4.nH2O wherein S is a support, R is an alkyl group, n is the number of water molecules and use thereof in the preparation of vicinal diols by asymmetric dihydroxylation (AD) of olefins in presence of cinchona alkaloid compounds.

Abstract: The present invention provides a supported osmate useful as a reusable catalyst in the preparation of vicinal diols. The present invention also relates to a process for the preparation of supported osmates of the formula (S—NR3)2OsO4.nH2O wherein S is a support, R is an alkyl group, n is the number of water molecules and use thereof in the preparation of vicinal diols by asymmetric dihydroxylation (AD) of olefins in presence of cinchona alkaloid compounds.

Abstract: The present invention relates to design and preparation of LDH-diisopropylamide through simple exchange process for the first time and its use in catalytic amounts for preparing aldols/&agr;,&bgr;-unsaturated nitriles/&agr;,&bgr;-unsaturated esters/transesterified products/&bgr;-nitroalkanols/Michael adducts and epoxide, resulting in higher yields.

Abstract: The present invention provides an ecofriendly process for the preparation 2-nitrothiophenes selectively from thiophene, using metal exchanged clay catalysts and nitric acid, dispensing with the use of acetic anhydride.

Abstract: The present invention relates to a multifunctional reusable catalyst and to a process for the preparation thereof on a single matrix of the support to perform multicomponent reaction in a single pot. The multifunctional catalysts of the invention are useful for the synthesis of chiral vicinal diols by tandem and/or simultaneous reactions involving Heck coupling, N-oxidation and AD reaction of olefins in presence of cinchona alkaloid compounds both as an native one and immobilized one in the said matrix support. This invention also relates to a process for preparing vicinal diols by asymmetric dihydroxylation of olefins in presence of cinchona alkaloid compounds employing reusable multifunctional catalysts as heterogeneous catalysts in place of soluble osmium catalysts.

Abstract: The present invention provides an ecofriendly method for preparing dinitramidic acid and its salts by nitration of ammonium sulfamate with fuming nitric acid as a nitrating agent using solid acid catalysts selected from the group consisting of a montmorillonite clay catalyst and metal ion exchanged K10 montmorillonite clay catalysts and surface supported catalysts and preparation of ammonium dinitramide by neutralization of the dinitramidic acid with ammonia and separation of ammonium dinitramide.