Homogeneous Metal Salt Catalysis in Organic Reactions. I. The Preparation of Vinyl Ethers by Vinyl Transetherification

Radical Cyclopolymerization of Divinyl Ethers. The Polymerization Kinetics and the Polymer Structure.

“…5 PYE was prepared by the isomerization of allyl vinyl ether obtained by the exchange reaction of nbutyl vinyl ether and allyl alcohol in the presence of Hg (OAc)z according to the procedure of Watanabe et a/. 6 : bp 66-67°C, lit 6 bp 66-67°C. The isomerization to PYE (cis-isomer) was performed with reference to the preparation of cis,cis-dipropenyl ether 7 dimethylsulfoxide at room temperature for 10 days.…”

“…Rc=kc [M·] (1) (2) were kP and kc are the respective rate constants, and Therefore, In the case of PVE and CH3-PVE monomers, (6) since only the vinyl group is involved in the propagation. Therefore,…”

Synthesis of 3-Substituted-clavams: Antifungal Properties, DD-Peptidase and β-Lactamase Inhibition

“…The simple vinyl ether 23 was obtained directly from 16 (Scheme 2) using the standard trans-etherification procedure with vinyl n-butyl ether in the presence of mercury acetate [22], or by the alternative method, involving reaction of the alcohol with vinyl acetate in the presence of [IrCl(cod)] 2 [23]. It should be stressed that both TIBS-protected vinyl and (Z)-propenyl ethers derived from the phenyl-1,2-ethanediol displayed the same direction and a similar relatively high degree of asymmetric induction [18].…”

Some 4-Oxa-farnesane Insect Juvenile Hormone Mimics

“…Though, undoubtedly a few of the compounds described by us in the present communication must have been covered by these authors in their Patents, there is no description of any of these compounds in the corresponding entries in the Chemical Abstracts. 6 9 ) between geraniol and ethyl 3-ethoxycrotonate. 'O ) In a similar manner and by employing 7-methoxy-or 7-ethoxygeraniol, compounds II, IV ~ VII were prepared.…”