Ni-Catalyzed Homoallylation of Polyhydroxy N,O-Acetals with Conjugated Dienes Promoted by Triethylborane

In the presence of Ni-catalyst and triethylborane, N,O- Acetals prepared from glycolaldehyde and glyceraldehyde with primary amines in situ underwent homoallylation with conjugated dienes to provide 2- Amino-5-hexenols in high regio- And stereoselectivity. Under similar reaction conditions, N,O- Acetals from carbohydrates with primary amines provided the corresponding polyhydroxy-bishomoallylamines in good to reasonable yields

リングネットを用いた防護ネットシステムに対する竜巻飛来物の自由落下試験

application/pdfProtection Nets have been clarified as one of the countermeasures to protect facilities of Nuclear Power Plants against Tornado Missile. This research shows the performance of the Net Protection System, which has no anisotropy and high energy absorbing capacity, by conducting the free-fall test with Tornado Missile according to the “Assessment guide for tornado effect on nuclear power plants”. As a result of the test, the capacity and safety ratio of this system against series of impacts were confirmed, when the Tornado Missile hits the center and the corner point in the net, even when it hits the same point multiple times. Furthermore, this research concludes the method to calculate the amount of absorbing energy of Ring nets after clearing up the dynamic response of the system