The nitrolactonization of alkenyl carboxylic acids mediated by Fe(NO 3) 3 •9H 2 O has been developed. Nitrolactones were obtained in up to 93% yield by treatment of alkenyl carboxylic acids with Fe(NO 3) 3 •9H 2 O. Mechanistic studies disclosed that the reaction proceeded through a radical intermediate generated from addition of NO 2 to alkenyl carboxylic acids.

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Ene reaction of various olefins proceeded with the iminium salt generated by the oxidation of aminoketene silyl acetal to give addition products in good yields.

The relationship between stress and strain for polypropylene film was studied under strain rates from 0.13 to 5.21 s 21 in order to study the deformation behavior of film under higher strain rates than previous studies. Uniform thickness was obtained in the strain rates from 2.08 to 5.21 s 21 at 435 K, or from 2.08 to 3.13 s 21 at 437 K. The temperature rise of film due to the generation of heat from plastic strain influenced the relationship between stress and strain, in particular, at high strain rates and low temperature. Material constants for the constitutive equation of film were determined using the measurements from 2.08 to 5.21 s 21 at 435 K and from 2.08 to 3.13 s 21 at 437 K. Film thicknesses during and after transverse direction stretching were successfully predicted by applying the material constants obtained. The authors concluded that the material constants should be determined by applying the stretching conditions, under which there is little or no effect from heat generation and under which film can be stretched uniformly in thickness. POLYM. ENG. SCI., 53:309-320, 2013. ª

C-C bond formation O 0282Ene Reaction Using the Iminium Salt Generated by the Oxidation of Aminoketene Silyl Acetal. -A variety of α-amino esters (III) and (V) is produced in good yields by an imino ene reaction of the iminium salt generated by the oxidation of silyl acetal (II). -(SHIMIZU*, M.; ITOU, H.; IWAO, T.; UMEDA, Y.; Chem. Lett. 38 (2009) 7, 732-733; Dep. Chem. Mater., Fac. Eng., Mie Univ., Tsu, Mie 514, Japan; Eng.) -M. Paetzel 48-054