Reaction of Acetals with Various Carbon Nucleophiles under Non-Acidic Conditions: CC Bond Formation via a Pyridinium-Type Salt
作者:Hiromichi Fujioka、Kenzo Yahata、Tomohito Hamada、Ozora Kubo、Takashi Okitsu、Yoshinari Sawama、Takuya Ohnaka、Tomohiro Maegawa、Yasuyuki Kita
DOI:10.1002/asia.201100812
日期:2012.2.6
substitution reactions of acetals with carbon nucleophilesvia the pyridinium‐type salts generated by the treatment of acetals with TESOTf‐2,4,6‐collidine or 2,2′‐bipyridyl have been developed. Various carbon nucleophiles, such as organocuprates, silyl enol ethers, enamines, etc., reacted with the pyridinium‐type salts to give the corresponding substituted products in good yields. The reactions proceeded
Transition-Metal-Free Cross-Coupling of Acetals and Grignard Reagents To Form Diarylmethyl Alkyl Ethers and Triarylmethanes
作者:Shi-Liang Shi、Yang Qin、Sheng Liu
DOI:10.1055/a-2088-5000
日期:2024.2
reaction of acetals and Grignard reagents. The method provides a modular preparation of diarylmethyl alkyl ethers, triarylmethanes, and 1,1-diarylalkanes that constitute the core structures of many bioactive molecules and synthetic motifs. A series of readily accessible acetals bearing aryl, alkenyl, and alkyl substituents efficiently coupled with commercially available aryl, alkyl, and allylic magnesium