Silyl compounds, titanated

In an analogous reaction the catechol titanate 2136 is converted by TMSOTf 20, via 2137, to give the bis-(trimethylsilyl)ester 2138, which eliminates HMDSO 7 to regenerate 2136 [65] (Scheme 13.18). The intermediate compound 2137 apparently serves as catalyst for the reaction of l-0-trimethylsilyl-2,3,5-tri-0-benzyl-D-arabino-furanose with O-silylated alcohols to afford mainly the l-/ -arabinofuranosides. 

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