2-Acetoxyethyl vinyl ether

Among these, in particular, the acetate [17] and the silyloxyl [31] derivatives are often used as the protecting groups for the hydroxyl (alcohol) function. For example, polymers of 2-acetoxyethyl vinyl ether are readily transformed into a polyalcohol, poly(2-hydroxyethyl vinyl ether), by alkaline hydrolysis [17]. Due to the polar pendant functions, the polymers are of course hydrophilic and often water-soluble, and serve as hydrophilic segments in so-called amphiphilic polymers, as will be discussed later (Sections III.D and VI.B.5). Other important protecting groups include the malonate [23] and the imides [29,30], which lead to polymeric carboxylic acids and amines, respectively (Scheme 1). 

Three arm amphiphilic star-block copolymers of isobutyl vinyl ether (IBVE) and 2-hydroxyethyl vinyl ethers were also prepared by Higashimura et al. [23]. The synthetic strategy involved the sequential living cationic polymerization of IBVE and 2-acetoxyethyl vinyl ether, initiated by the trifunctional initiator system composed of tris(trifluoroacetate) and ethylaluminum dichloride, with excess of 1,4-dioxane as a carbocation-stabilizing Lewis base (Scheme 8). 

A large variety of AB- and ABA-type block copolymers have been prepared from vinyl ethers via sequential living cationic polymerizations. For example, as shown in Scheme 2 (A), isobutyl vinyl ether (IBVE) is first polymerized with the HI/ZnI2 or HCl/ZnCl2 initiating system, and from the resulting living polymer, the second monomer, 2-acetoxyethyl vinyl... 

SYNS ACETATE de VINYLE ACETIC ACID, ETHENYL ESTER ACETIC ACID, ETHYLENE ETHER ACETIC ACID VINYL ESTER 1-ACETOXYETHYL-ENE ETHANOIC ACID, ETHENYL ESTER ETHENYL ACETATE ETHENYL ETHANOATE OCTAN WINYLU (POLISH) VAC VINILE (ACETATO i) (ITALIAN) VINYLACETAAT (DUTCH) VINYLACET-AT (GERMAN) VINYL ACETATE, inhibited (DOT) VINYL ACETATE H.Q. VINYL A MONOMER VINYLE (ACETATE de) (FRENCH) VINYLESTER KYSELINY OCTOVE VINYL ETHANOATE VYAC ZESETT... 

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