91970-13-7Relevant articles and documents
Methoxymethylation of substituted alcohols using dimethoxymethane over Mo(VI)/ZrO2
Shyamsundar,Mohamed Shamshuddin,Ananda,Pratap
, p. 655 - 660 (2018/02/09)
The methoxymethylation reaction of alcohols was studied on Mo/ZrO2 (MZ) catalysts. The catalyst containing 5, 10 and 15 % Mo(VI) ions was prepared by solution combustion method. These solid acid catalytic materials were characterized by NH3- TPD, powder XRD, BET, FTIR spectroscopy, scanning electron microscopy, transmission electron spectroscopy and ICP- OES techniques. These catalysts were evaluated for their catalytic activity in the synthesis of methoxymethylation reactions of various substituted alcohols with dimethoxymethane in shorter reaction times (20 min) at moderate temperature (40 °C) with excellent yields (around 99 %). The main features of the Mo/ZrO2 catalyzed reaction are high yields, ease of scale up to gram scale, recyclable catalysts, inexpensive reagents, ecofriendly catalysts and a solvent free approach for the synthesis of methoxymethylated products.
H3PW12O40at the[bmim][FeCl4]: A green catalytic system for alkoxymethylation of alcohols and their one-pot interconversion to acetates and TMS-ethers
Mohammadpoor-Baltork,Moghadam,Tangestaninejad,Mirkhani,Khosropour,Mirjafari
experimental part, p. 513 - 524 (2012/06/16)
12-Tungstophosphoric acid immobilized on [bmim][FeCl4] was found to be an efficient catalyst for chemoselective methoxymethylation and ethxoymethylation of alcohols and also one-pot conversion of MOM- or EOM-ethers to their corresponding acetates and TMS-ethers under thermal conditions and microwave irradiation. These procedures were simple, rapid and the corresponding products were obtained in high yields. The catalyst exhibited remarkable reactivity and was reusable.
The reaction of acetal-type protective groups in combination with TMSOTf and 2,2′-bipyridyl; Mild and chemoselective deprotection and direct conversion to other protective groups
Fujioka, Hiromichi,Minamitsuji, Yutaka,Kubo, Ozora,Senami, Kento,Maegawa, Tomohiro
experimental part, p. 2949 - 2960 (2011/05/12)
A mild and chemoselective deprotection method of various acetal-type protective groups, such as MOM, MEM, BOM, and SEM ethers, has been developed. The combination of TMSOTf and 2,2′-bipyridyl was very effective for the deprotection, and the reaction proceeded via the formation of pyridinium intermediates, which were hydrolyzed to the corresponding alcohols in good to high yields. The features of this method are mild (almost neutral) reaction conditions and the tolerability of acid-sensitive functional groups. This method is also applicable for the direct conversion of MOM ether to BOM or SEM ether using the appropriate alcohols instead of H2O.