Scavenger resin for primary amines, hydrazines, Grignard reagents and organolithiums: Tetrahedron 54 3983 (1998). Reductive amination has been achieved with trimethyl orthoformate and sodium triacetoxyborohydride and cleavage of the amine from the support with DDQ: Tetrahedron Lett., 39, 7345 (1999).