... Volume 52, Issue 5, 29 January 1996, Pages 1643–1650. ... n CHO, Bu t CHO, PhCHO, Pri 2 CO, Bu t 2 CO, (CH 2 ) 4 CO, 2-cyclohexenone, PhCOMe] with an excess of lithium powder (1:7 molar ratio) and a catalytic amount of DTBB (5 mol %) in ... Tetrahedron Lett., 31 (1990), pp. ...