72924-95-9Relevant articles and documents
Tropylium-promoted Ritter reactions
Doan, Son H.,Hussein, Mohanad A.,Nguyen, Thanh Vinh
supporting information, p. 8901 - 8904 (2021/09/10)
The Ritter reaction used to be one of the most powerful synthetic tools to functionalize alcohols and nitriles, providing valuableN-alkyl amide products. However, this reaction has not been frequently used in modern organic synthesis due to its employment of strongly acidic and harsh reaction conditions, which often lead to complicated side reactions. Herein, we report the development of a new method using salts of the tropylium ion to promote the Ritter reaction. This method works well on a range of alcohol and nitrile substrates, giving the corresponding products in good to excellent yields. This reaction protocol is amenable to microwave and continuous flow reactors, offering an attractive opportunity for further applications in organic synthesis.
HIGH OXIDATION STATE TRANSITION METAL CARBOXYLATES AS ACYLATING AGENTS
Recht, Joel,Cohen, Brett I.,Goldman, Alan S.,Kohn, Joachim
, p. 7281 - 7284 (2007/10/02)
The formation of amide bonds from the reaction of metal carboxylates with amines was observed for the first time; complexes for titanium(IV), zirconium(IV) and tantalum(V) were investigated.