Mild and Efficient Deprotection of Acetal-Type Protecting Groups of Hydroxyl Functions by Triethylsilyl Triflate — 2,4,6-Collidine Combination
摘要:
Deprotection of acetal-type protecting groups of hydroxyl functions has been studied in detail. The treatment of alcohol derivatives protected by acetal-type protecting groups with TESOTf-2,4,6-collidine followed by H(2)O-treatment produces the corresponding hydroxyl compounds in good yields. The characteristic features of the method are very mild and chemoselective, and acid-labile functional groups can tolerate these conditions.
Mild and Efficient Deprotection of Acetal-Type Protecting Groups of Hydroxyl Functions by Triethylsilyl Triflate — 2,4,6-Collidine Combination
摘要:
Deprotection of acetal-type protecting groups of hydroxyl functions has been studied in detail. The treatment of alcohol derivatives protected by acetal-type protecting groups with TESOTf-2,4,6-collidine followed by H(2)O-treatment produces the corresponding hydroxyl compounds in good yields. The characteristic features of the method are very mild and chemoselective, and acid-labile functional groups can tolerate these conditions.
1-Tosloxy-2,2-ethylenedioxy-6,10-dimethyl undecanes and undecenes, process for the preparation of 2S*,3R*-3-benzyloxy-6,6-ethylene dioxy-2-methyl-2-(5'-hydroxy-4'-methylpentyl)-oxepane, and use of the latter for the preparation of oxepan-3-ol derivatives