... Volume 21, Issue 32, 1980, Pages 3019-3020. ... Download full text in PDF. Tetrahedron Letters Vol. ... To a solution of dry dlls opropylamine ft (7.7 ml, 5.5 x 10 - mole) in dry THF (25 ml) at 0 under argon was added dropwise a hexane solution of n-butyllithlum (21 ml, 5.5 x 10"^ mole ...