... Download full text in PDF. Tetrahedron Letters,Vo1.23,No.13,pp 1315-1318,1982 0040-4039/82/131315-04$03.00/0 ... The reaction mixture was diluted with an equivalent volume of methanol and adjusted to pH 4.5-5.0 at 0 with 12N ... 3. H. Pietsch, Tetrahedron Letters, 4053 ( ...