A series of nitrogen‐containing spiro[4.n]alkenes was prepared with excellent yields starting from lactams in two steps: allylboration on the carbonyl carbon and subsequent ring‐closing metathesis of the 2,2‐diallyl N‐heterocycles. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
No takes yet. Share an insight, caveat, or question.
Nieczypor et al. (2004) studied this question.