Page 1. Tetrahedron Letters,Vol.26,No.l2,Dp 1573-1576,1985 0040-4039/85 $3.00 + .oo Printed in Great Bri-tain 01985 Perpamon Press Ltd. ... f: 0 Et N P I: RC-OH + Cd-OR' & > RCOC-OR' ( Eq. I ) t f f3 PP RO-C-CHpC-OH + Cl-C-OR 1 Et Ii +._ RO-C-CHrC-OR' +CO, (Eq.2) ...