882522-76-1Relevant articles and documents
Tandem photocycloaddition - Retro-Mannich fragmentation of enaminones. A route to spiropyrrolines and the tetracyclic core of koumine
White, James D.,Ihle, David C.
, p. 1081 - 1084 (2006)
Intramolecular [2 + 2] photocycloaddition of β-aminoalkylidene malonates gives transiently a cyclobutane which undergoes retro-Mannich fragmentation to a Δ1-pyrroline. The tandem sequence, exemplified in two series based on tryptamine and aminoethyl-1,4-c