Vito Tortelli - Academia.edu (original) (raw)

Uploads

Papers by Vito Tortelli

Research paper thumbnail of Sulphonic fluorinated ionomers

Research paper thumbnail of Sulphonic fluorinated ionomers

Research paper thumbnail of Perfluoro Allyl Fluorosulfate (FAFS): A Versatile Building Block for New Fluoroallylic Compounds

Molecules, 2011

In this study we will present and discuss both the synthesis of CF 2 =CFCF 2 OSO 2 F (perfluoroal... more In this study we will present and discuss both the synthesis of CF 2 =CFCF 2 OSO 2 F (perfluoroallyl fluorosulfate, FAFS), focusing in particular on the important role of C 3 F 6 /SO 3 ratio, reaction temperature and boron catalyst/SO 3 ratio on FAFS' yield and selectivity, as well as a wide variety of ionic and radical reactions possible with FAFS. We focused our attention on reactions of FAFS with aliphatic and aromatic alcohols, acyl halides, halides, H 2 O 2 , ketones and radicals whose synthesis and reaction mechanisms will be presented and discussed. Particular attention will be devoted to the novel diallyl-fluoroalkyl peroxide obtained. Factors such as pK a and Lowry and Pearson's Hard/Soft Acid-Base Theory which determine the selectivity between Addition/Elimination vs. Nucleophilic Substitution reaction mechanisms on FAFS will also be presented and discussed.

Research paper thumbnail of Bimetallic catalysts for the gas-phase hydrodechlorination of fluoroethers

Research paper thumbnail of 新規なペルフルオロジオキソール、その製造方法、およびそれから得られる単独重合体および共重合体

Research paper thumbnail of Ionomères fluorés portant un allyle

La presente invention concerne un ionomere fluore [polymere (I)] comprenant des unites repetitive... more La presente invention concerne un ionomere fluore [polymere (I)] comprenant des unites repetitives issues d'au moins les monomeres suivants : (i) 5 a 50 % en poids d'un monomere fluore [monomere (A)] contenant au moins une fonctionnalite -SO 2 X, de preference ayant la formule de CF 2 =CF-O-(CF 2 CF(CF 3 )O) m -(CF 2 ) n SO 2 X (I), m etant 0 ou 1, n etant un entier entre 0-10 et X etant choisi parmi F, OH et O - Me + , Me + representant un ion de metal alcalin ou un cation ammonium de formule NR 4 + ou chaque R represente independamment un atome d'hydrogene ou un radical organique monovalent choisi parmi les radicaux aliphatiques ayant de 1 a 8 atomes de carbone et les radicaux aryliques ou alicycliques ayant de 3 a 8 atomes de carbone ; (ii) un monomere fluore non fonctionnel [monomere (B)] ayant au moins une insaturation ethylenique ; et (iii) un compose polyfonctionnel fluore ayant la formule generale : (CR 1 R 2 =CFCF 2 -O) a -R f -((O) c -CF=CR 3 R 4 ) b (11) dans ...

Research paper thumbnail of Elastomères fluorés comprenant des unités monomères dérivant d'une bis-oléfine

Research paper thumbnail of A process for preparing (per) fluoropolyethern, the end groups at one or both are substituted by one halogen atom

Research paper thumbnail of Addition reaction to fluoroallylfluorosulfate

Research paper thumbnail of TFE-based thermoprocessable copolymers

Research paper thumbnail of Sulphonic fluorinated ionomers

Research paper thumbnail of Process for preparing fluorohalogenethers

Research paper thumbnail of Electrochemical Behavior and EPR of Radical Anions of Perfluoroalkyl-Substituted Olefins

The Journal of Physical Chemistry, 1994

Research paper thumbnail of Recent development in the chemistry of fluoroxy compounds

Journal of Fluorine Chemistry, 1992

Research paper thumbnail of The addition of trifluoromethylhypofluorite to hexafluoropropene dimers

Tetrahedron Letters, 1995

The reaction of trifluomethylhypofluorite with the two anionic dimers of hexafluoropropene leads ... more The reaction of trifluomethylhypofluorite with the two anionic dimers of hexafluoropropene leads to the trifluoromethylether adducts in excellent yield. The radical intermediates of the reaction have been detected using the EPR technique.

Research paper thumbnail of Process for the Synthesis of Perfluoroalkandienes

Related U.S. Application Data 63 Continuation of Ser. No. 449,317, Dec. 11, 1989, aban doned, whi... more Related U.S. Application Data 63 Continuation of Ser. No. 449,317, Dec. 11, 1989, aban doned, which is a continuation of Ser. No. 124,044, Nov. 23, 1987, abandoned. 30 Foreign Application Priority Data Nov. 27, 1986 IT Italy ............................... 22467 AA86 51 Int. Cl. ....................... CO7C 17/00; CO7C 17/26 EH USOO5082981A 11 Patent Number: 5,082,981 (45) Date of Patent: "Jan. 21, 1992

Research paper thumbnail of Novel peroxide-curable fluoroelastomer particularly suitable for producing o-ring

PURPOSE: To obtain a novel peroxide-curable fluoroelastomer which requites only a short-time post... more PURPOSE: To obtain a novel peroxide-curable fluoroelastomer which requites only a short-time post-curing treatment and is particularly suitable for producing O-rings by forming a polymer which has specified terminal structures and structural chain units. CONSTITUTION: This fluoroelastomer has iodine atoms at the molecular terminals and monomeric units derived from an iodinated olefin of the formula: CHR=CB- Z-CH 2 CHR-I [wherein R is H or CH 3 ; and Z is an ether-oxygen-contg. 1-18C (per)fluoroalkylene or (per)fluoropolyoxyalkylene radical] in the chain. The content of the monomer units derived from the iodinated monomer is generally 0.01-1.0 mol based on 100 mol of the other monomer units. Generally, the number of total iodine atoms in the fluoroelastomer is, on average, 1.8-5.0 per chain, and the number of iodine atoms at the molecular terminals is, on average, 1.0-2.0 per chain. COPYRIGHT: (C)1995,JPO

Research paper thumbnail of Process for preparing alpha, omega-haloperfluoroalkanes

Research paper thumbnail of Perfluoroalkanes obtained by photochemical fluorination and use thereof as polymerization initiators

Research paper thumbnail of Perfluoroalkanes and haloperfluoroalkanes, their precursors and process for their synthesis

Research paper thumbnail of Sulphonic fluorinated ionomers

Research paper thumbnail of Sulphonic fluorinated ionomers

Research paper thumbnail of Perfluoro Allyl Fluorosulfate (FAFS): A Versatile Building Block for New Fluoroallylic Compounds

Molecules, 2011

In this study we will present and discuss both the synthesis of CF 2 =CFCF 2 OSO 2 F (perfluoroal... more In this study we will present and discuss both the synthesis of CF 2 =CFCF 2 OSO 2 F (perfluoroallyl fluorosulfate, FAFS), focusing in particular on the important role of C 3 F 6 /SO 3 ratio, reaction temperature and boron catalyst/SO 3 ratio on FAFS' yield and selectivity, as well as a wide variety of ionic and radical reactions possible with FAFS. We focused our attention on reactions of FAFS with aliphatic and aromatic alcohols, acyl halides, halides, H 2 O 2 , ketones and radicals whose synthesis and reaction mechanisms will be presented and discussed. Particular attention will be devoted to the novel diallyl-fluoroalkyl peroxide obtained. Factors such as pK a and Lowry and Pearson's Hard/Soft Acid-Base Theory which determine the selectivity between Addition/Elimination vs. Nucleophilic Substitution reaction mechanisms on FAFS will also be presented and discussed.

Research paper thumbnail of Bimetallic catalysts for the gas-phase hydrodechlorination of fluoroethers

Research paper thumbnail of 新規なペルフルオロジオキソール、その製造方法、およびそれから得られる単独重合体および共重合体

Research paper thumbnail of Ionomères fluorés portant un allyle

La presente invention concerne un ionomere fluore [polymere (I)] comprenant des unites repetitive... more La presente invention concerne un ionomere fluore [polymere (I)] comprenant des unites repetitives issues d'au moins les monomeres suivants : (i) 5 a 50 % en poids d'un monomere fluore [monomere (A)] contenant au moins une fonctionnalite -SO 2 X, de preference ayant la formule de CF 2 =CF-O-(CF 2 CF(CF 3 )O) m -(CF 2 ) n SO 2 X (I), m etant 0 ou 1, n etant un entier entre 0-10 et X etant choisi parmi F, OH et O - Me + , Me + representant un ion de metal alcalin ou un cation ammonium de formule NR 4 + ou chaque R represente independamment un atome d'hydrogene ou un radical organique monovalent choisi parmi les radicaux aliphatiques ayant de 1 a 8 atomes de carbone et les radicaux aryliques ou alicycliques ayant de 3 a 8 atomes de carbone ; (ii) un monomere fluore non fonctionnel [monomere (B)] ayant au moins une insaturation ethylenique ; et (iii) un compose polyfonctionnel fluore ayant la formule generale : (CR 1 R 2 =CFCF 2 -O) a -R f -((O) c -CF=CR 3 R 4 ) b (11) dans ...

Research paper thumbnail of Elastomères fluorés comprenant des unités monomères dérivant d'une bis-oléfine

Research paper thumbnail of A process for preparing (per) fluoropolyethern, the end groups at one or both are substituted by one halogen atom

Research paper thumbnail of Addition reaction to fluoroallylfluorosulfate

Research paper thumbnail of TFE-based thermoprocessable copolymers

Research paper thumbnail of Sulphonic fluorinated ionomers

Research paper thumbnail of Process for preparing fluorohalogenethers

Research paper thumbnail of Electrochemical Behavior and EPR of Radical Anions of Perfluoroalkyl-Substituted Olefins

The Journal of Physical Chemistry, 1994

Research paper thumbnail of Recent development in the chemistry of fluoroxy compounds

Journal of Fluorine Chemistry, 1992

Research paper thumbnail of The addition of trifluoromethylhypofluorite to hexafluoropropene dimers

Tetrahedron Letters, 1995

The reaction of trifluomethylhypofluorite with the two anionic dimers of hexafluoropropene leads ... more The reaction of trifluomethylhypofluorite with the two anionic dimers of hexafluoropropene leads to the trifluoromethylether adducts in excellent yield. The radical intermediates of the reaction have been detected using the EPR technique.

Research paper thumbnail of Process for the Synthesis of Perfluoroalkandienes

Related U.S. Application Data 63 Continuation of Ser. No. 449,317, Dec. 11, 1989, aban doned, whi... more Related U.S. Application Data 63 Continuation of Ser. No. 449,317, Dec. 11, 1989, aban doned, which is a continuation of Ser. No. 124,044, Nov. 23, 1987, abandoned. 30 Foreign Application Priority Data Nov. 27, 1986 IT Italy ............................... 22467 AA86 51 Int. Cl. ....................... CO7C 17/00; CO7C 17/26 EH USOO5082981A 11 Patent Number: 5,082,981 (45) Date of Patent: "Jan. 21, 1992

Research paper thumbnail of Novel peroxide-curable fluoroelastomer particularly suitable for producing o-ring

PURPOSE: To obtain a novel peroxide-curable fluoroelastomer which requites only a short-time post... more PURPOSE: To obtain a novel peroxide-curable fluoroelastomer which requites only a short-time post-curing treatment and is particularly suitable for producing O-rings by forming a polymer which has specified terminal structures and structural chain units. CONSTITUTION: This fluoroelastomer has iodine atoms at the molecular terminals and monomeric units derived from an iodinated olefin of the formula: CHR=CB- Z-CH 2 CHR-I [wherein R is H or CH 3 ; and Z is an ether-oxygen-contg. 1-18C (per)fluoroalkylene or (per)fluoropolyoxyalkylene radical] in the chain. The content of the monomer units derived from the iodinated monomer is generally 0.01-1.0 mol based on 100 mol of the other monomer units. Generally, the number of total iodine atoms in the fluoroelastomer is, on average, 1.8-5.0 per chain, and the number of iodine atoms at the molecular terminals is, on average, 1.0-2.0 per chain. COPYRIGHT: (C)1995,JPO

Research paper thumbnail of Process for preparing alpha, omega-haloperfluoroalkanes

Research paper thumbnail of Perfluoroalkanes obtained by photochemical fluorination and use thereof as polymerization initiators

Research paper thumbnail of Perfluoroalkanes and haloperfluoroalkanes, their precursors and process for their synthesis

Log In