... Tetrahedron: Asymmetry. Volume 14, Issue 10, 16 May 2003, Pages 1267–1273. Cover image Cover image. ... The solution was stirred for 14 days at 25°C. The mixture was transferred into a 1000 ml separation funnel. The liberated 1a was extracted with diethyl ether (3×80 ml). ...
[Gillespie, Kevin M.; Sanders, Christopher J.; O'Shaughnessy, Paul; Westmoreland, Ian; Thickitt, Christopher P.; Scott, Peter Journal of Organic Chemistry, 2002 , vol. 67, # 10 p. 3450 - 3458]