PhotochemicalRing Contraction of 2‐Ethoxypyrrolin‐5‐ones to Cyclopropanone Derivatives: tert ‐Butyl N ‐(1‐Ethoxycyclopropyl)carbamate

Abstract

Photochemical ring contraction of 2‐ethoxypyrrolin‐5‐ones to cyclopropanone derivatives: tert ‐butyl N ‐(1‐ethoxycyclopropyl)carbamate intermediate: silver salt of succinimide intermediate: 6.26 g. (0.0493 mole) of redistilled 2‐ethoxypyrrolin‐5‐one product: tert ‐butyl N ‐(1‐ethoxycyclopropyl)carbamate