869367-96-4Relevant articles and documents
Ring enlargement of carbohydrate-derived 1,2-Oxazines to enantiopure 5-Bromo-1,2-oxazepines and subsequent palladium-catalyzed reactions
Al-Harrasi, Ahmed,Fischer, Sebastian,Zimmer, Reinhold,Reissig, Hans-Ulrich
experimental part, p. 304 - 314 (2010/04/03)
Dibromocarbene addition to d-glyceraldehyde-derived 1,2-oxazines syn-1 and anti-1 provided dibromocyclopropane intermediates syn-3 and anti-3, which smoothly reacted with methanol under ring enlargement to furnish 5-bromo-1,2-oxazepine derivatives syn-4 a
Ring enlargement of enantiopure 1,2-oxazines to 1,2-oxazepine derivatives and their palladium-catalyzed couplings
Al-Harrasi, Ahmed,Reissig, Hans-Ulrich
, p. 2376 - 2378 (2007/10/03)
Phase-transfer-catalyzed cyclopropanation of enantiopure 1,2-oxazine derivatives anti-1a,b or syn-1 followed by solvolysis of the resulting geminal dibromocyclopropane intermediates afforded the expected ring-expanded products, namely 1,2-oxazepines anti-