Chemical Transformations of 4,6-Dimethyl-2β-hydroxy-8-oxo-3,5,7-trioxatetracyclo[7.2.1.0<sup>4,11</sup>.0<sup>6,10</sup>]dodecane
作者:Jyh-Haur Chern、Hsien-Jen Wu
DOI:10.1002/jccs.199700011
日期:1997.2
AbstractReactions of 4,6‐dimethyl‐2β‐hydroxy‐8‐oxo‐3,5,7‐trioxatetracyclo‐[7.2.1.0.4,11.06,10]dodecane 1 with nucleophiles have been studied. Reaction of 1 with alcohols, triethylsilane, allyltrimethylsilane, and methylthiotrimethylsilane in CH2Cl2 in the presence of TiCL4, gave the substitution products 2,7a, 7b, and 7c in 80‐90% yields. The substitution reaction took place chemoselectively on the hemiacetal group of I. Reaction of 1 with cyanotrimethylsilane in CH2C12 in the presence of TiCL4, gave compound 8 and the rearranged product 9. The structure of 9 was proven by X‐ray analysis.