... Download full text in PDF. REGIOSPECIFIC MICHAEL ADDITIONS TO mETHYLENE CYCLOPENTENONES 0040039/84 $3.00 + .00 984 Pergarnon Press Ltd. Tetrahedron Letters,Vol.25,No.3,pp 353-356,1984 Printed in Creat Britain * TIWA SIWAPINYOYOS AND YODHATHAI THEBTARANONTH Department of Chemistry, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok 10400, Thailand. ...