... 145 : J&rnal tif Org~nonietdie Chemistry, I22 (1976) 145-149 0 Elkier Sequoia SA., Lausann e -Printed ... cm, tm, (P) ( 50%) (52%) (55%) ... The solution was allowed to reach room temperature, the organic layer separated and the aqueous layer extracted with 2 X 25 ml of ether. ...