1 I1 t-BuMgC1; Mg MeMgI; Mg 1 OM@ I the;: ... HOC- ClMg-(& I1 0 IV I11 The ketone (I) is reduced only slowly and crys- tallization of the product gives what appears to be a molecular compound of I and 11. This substance, m. p. 134', resists separation by chro- matography on alumina, but after acetylation the ester and ketone may be separated by either crys- tallization or chromatography. So prepared, I1 and its acetate agree in mp with the products prepared ...
