54845-36-2Relevant articles and documents
An active, general, and long-lived palladium catalyst for cross-couplings of deactivated (hetero)aryl chlorides and bromides with arylboronic acids
Hoshi, Takashi,Honma, Tomonobu,Mori, Ayako,Konishi, Maki,Sato, Tsutomu,Hagiwara, Hisahiro,Suzuki, Toshio
, p. 11513 - 11524 (2013/12/04)
An active, general, and long-lived palladium catalyst for Suzuki-Miyaura reactions of aryl and heteroaryl chlorides deactivated by steric hindrance, electron richness, and coordinating functional groups is reported. In reactions of arylbromide bearing two o-tert-butyl substituents, C(sp3)-H arylation of the tert-butyl group, rather than the Suzuki-Miyaura reaction, proceeded in excellent yield. The key to the success of the reactions was the development of biphenylene-substituted dicyclohexylruthenocenylphosphine (CyR-Phos) as a supporting ligand.
Diazotisation of aromatic amines and solvolysis of diazonium salts in ethylene glycol ethers
Ram, Ram N.,Singh, Virinder
, p. 800 - 803 (2007/10/03)
Aniline and unhindered alkyl-substituted anilines undergo solvolysis in dioxane and DME saturated with dry hydrogen chloride on diazotisation with isoamyl nitrite to give 2-(2-chloroethoxy)ethyl aryl ethers and 2-methoxyethyl aryl ethers respectively in 36-47% yields. 2,6-Dialkyl-substituted anilines give the corresponding chloro compounds as the major product along with the aryl ethers in lower yields. Diazotisation of aniline in ethylene glycol and monomethyl ethers of ethylene glycol and diethylene glycol gave the corresponding alcoholysis products in low yields. The solvolysis of aniline did not occur on diazotisation in diethyl ether or THF.
Sterically Congested Molecules, 11. The 2,6-Diisopropylphenyl Substituent at C=C and C=N Groups
Knorr, Rudolf,Ruhdorfer, Jakob,Boehrer, Petra,Bronberger, Hildegard,Raepple, Edith
, p. 433 - 438 (2007/10/02)
Two series of new compounds with sterically shielded, sp2-hybridized C-α atoms are prepared from bromo(chloro)-2,6-diisopropylbenzene.The α-(2,6-diisopropylphenyl) substituent common to all of them is used as an NMR-spectroscopic indicator for