Hm. He et al., A NOVEL 1,3-O-]C SILYL SHIFT AND DEACYLATION REACTION MEDIATED BY TETRA-N-BUTYLAMMONIUM FLUORIDE IN AN AROMATIC SYSTEM, Journal of organic chemistry, 60(18), 1995, pp. 5905-5909
A novel 1,3 O --> C migration of a silyl group accompanied by a deacyl
ation reaction was discovered during the conversion of l-3,17-bis(tert
-butyldimethylsilyl)-beta-estradiol (4) and ert-butyldimethylsilyl)-2-
propionyl-beta-estradiol (5) to 2,17-bis(tert-butyldimethylsilyl)-beta
-estradiol (6) in the presence of tetra-n-butylammonium fluoride. A cr
ossover experiment indicated that the transformation is intramolecular
.