Deprotection of benzyl ethers using 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) under photoirradiation
摘要:
The deprotection of benzyl ethers was effectively realized in the presence of 2,3-dichloro-5.6-dicyano-p-benzoquinone (DDQ) in MeCN under photoirradiation using a long wavelength UV light. (c) 2005 Elsevier Ltd. All rights reserved.
An Efficient and Convenient Method for the Direct Conversion of Alkyl Silyl Ethers into the Corresponding Alkyl Ethers Catalyzed by Iron(III) Chloride
作者:Takeshi Oriyama、Katsuyuki Iwanami、Kentaro Yano
DOI:10.1055/s-2005-872120
日期:——
Various alcohol silyl ethers were readily and efficiently transformed into the corresponding alkyl ethers in high yields by the use of aldehydes combined with triethylsilane in the presence of a catalytic amount of iron(III) chloride.
The deprotection of benzyl ethers was effectively realized in the presence of 2,3-dichloro-5.6-dicyano-p-benzoquinone (DDQ) in MeCN under photoirradiation using a long wavelength UV light. (c) 2005 Elsevier Ltd. All rights reserved.
Benzylation of Alcoholic Hydroxyl Groups with Benzyl Mesylate by Using a Catalytic Amount of Lithium Tetrakis(pentafluorophenyl)borate in the Coexistence of Lithium Triflate and Magnesium Oxide
Several alcohols possessing alkali-labile substituents such as halogen, ester and ketone were effectively benzylated with benzyl mesylate by using a catalytic amount of lithium tetrakis(pentafluorophenyl)borate [LiB(C6F5)4] in the coexistence of lithium triflate (LiOTf) and magnesium oxide (MgO) to afford the corresponding benzyl ethers in good to excellent yields.