Synthesis Of Thioamide

Synthesis of Thioamide-Containing Polystyrenes by FriedelCrafts Reaction and by Thioamidation of (co)Polydithioesters GHEZALLA TABAK, THI-NHA`N PHAM, true cat LEVESQUE*, RACHID HARAOUBIA† Laboratoire de Chimie wall´culaire et Thio-organique, basee Polyme`res et Interfaces, (UMR CNRS 6507) , Universite´ de Caen, Institut des Sciences de la Matie`re et du Rayonnement (ISMRA) 6 boulevard du Mare´chal Juin, F-14050 Caen, France Received 4 February 1997; accepted 24 June 1997 repeal: Thioamide groups were introduced into polystyrenes by the FriedelCrafts response, with phenyl isothiocyanate in nitromethane dissolvent, in the presence of anhydrous atomic number 13 chloride. broad entire copolymerization of 4-vinyl dithiobenzoate with styrene followed by low-temperature solution condensation reactions, with bare of amines in N,N-dimethylformamide, offered another synthetic highroad to (co)polymers containing thioamine groups in the face chains without crosslinki ng. q 1998 John Wiley & Sons, Inc.

J Polym Sci A: Polym Chem 36: 117127, 1998 Keywords: side-chain operative polythioamides; FriedelCrafts reaction; aromatic dithioesters; complimentary radical polymerization and copolymerization; thioamidation INTRODUCTION tional compounds selectively prepared from benzenedithiocarboxylate bearing copolymers issued prior work on thioamide-containing polymers from free radical polymerization. in our group was mainly devoted to the subtraction Leuckart12,13 was the first to use aluminium of main-chain polythioamides from diamines and chloride as the catalyst in the reaction of isocyabis( dithioes ters).110 Levesque et al. comport prepared ! nates with aromatic hydrocarbons. However, the umteen aliphatic polythioamides from bis(dithio- equivalent anilide was obtained in low yield. ester)s and diamines.16,9 and some aromatic and The use of phenyl isothiocyanate was depict semi-aromatic polythioamides from tetrathioter- by Gatterman in 1892,14 and the employment of...If you want to rag a full essay, order it on our website: BestEssayCheap.com

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