1. Easy access to medium rings by entropy/strain reduction. Part 2. The ready availability of cis,cis-2,4-diene-1,6-diols and derived dibromides allows a simple and mild route to substituted 2,7-dihydro-1H-azepines James G. Walsh,Patrick J. Furlong,Declan G. Gilheany J. Chem. Soc. Perkin Trans. 1 1999 3657