Intramolecular [2+2] Photocycloaddition. 14. Cycloreversion of Cyclophanes Possessing a Cyclobutane Ring at Their Tether
作者:Jun Nishimura、Yasuhiro Wada、Yukari Sano
DOI:10.1246/bcsj.65.618
日期:1992.2
Thermal cycloreversion of ten cyclophanes possessing a cyclobutane ring at their tether was examined. The rates were affected not only by their strain but also by their structural characteristics, such as meta- or para-configuration. The relative rate difference covered a range of the order of 106.
Cationic cyclocodimerization. 4. Syntheses and structures of [3.3]metacyclophane derivatives. Cyclization controlled by an orbital interaction and a steric constraint