1577210-89-9Relevant articles and documents
Direct Difluoromethylation of Alcohols with an Electrophilic Difluoromethylated Sulfonium Ylide
Zhu, Jiansheng,Liu, Yafei,Shen, Qilong
, p. 9050 - 9054 (2016)
A general method for the formation of alkyl difluoromethylethers under mild reaction conditions and with good functional-group tolerance was developed. The development of the method was based on the invention of a stable, electrophilic, difluoromethylating reagent, difluoromethyl-(4-nitrophenyl)-bis(carbomethoxy) methylide sulfonium ylide, which was synthesized by reaction of the easily available 4-nitrophenyl (difluoromethyl)thioether and dimethyl diazomalonate in the presence of a rhodium catalyst.
Difluoromethylation of alcohols with TMSCF2Br in water: A new insight into the generation and reactions of difluorocarbene in a two-phase system
Zhang, Rongyi,Ni, Chuanfa,Xie, Qiqiang,Hu, Jinbo
supporting information, (2020/11/10)
Although many difluorocarbene-involved reactions can be performed in the presence of water, the reaction of difluorocarbene using water as the only reaction medium is rare. By using TMSCF2Br as a unique difluorocarbene reagent and KHF2 as a mild activator, the difluoromethylation of liquid alcohols in water is described. This research not only develops an environmentally benign process for the synthesis of difluoromethyl ethers, but also provides a new insight into the generation and reactions of difluorocarbene in an oil-water two-phase system.
Synthetic method for alkyl difluoromethyl ether compound
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Paragraph 0077; 0081-0084; 0088-0090; 0121-0123, (2019/08/01)
The invention discloses a synthetic method for an alkyl difluoromethyl ether compound with convenience, high efficiency, mild conditions, high universality and high operability, and having the advantage of conveniently constructing a difluoromethoxy structure (OCF2H) in the later stage of total synthesis of target molecules. The synthetic method for the alkyl difluoromethyl ether compound is characterized by comprising a difluoromethyl etherification reaction of fatty alcohols and a difluoromethyl etherification reaction of mercaptan: the reagent used in the difluoromethyl etherification reaction of the fatty alcohols is as shown in the formula or an analogue of the formula; and the reagent used in the difluoromethyl etherification reaction of mercaptan is as shown in the formula or an analogue of the formula.