BiBr3, an efficient catalyst for the benzylation of alcohols: 2-phenyl-2-propyl, a new benzyl-type protecting group
摘要:
The benzylation of aliphatic alcohols with various benzylic alcohols has been achieved in the presence of BiBr3 under mild conditions. 2-Phenylpropan-2-ol proved to be the most efficient and can be considered as a novel protecting group. (C) 2000 Elsevier Science Ltd. All rights reserved.
The Thermal Decomposition of 1-Methyl-1-phenylethyl 2,2-Dimethylperoxypropionate in Cumene
作者:Takeshi Komai、Kenji Kato、Kazuo Matsuyama
DOI:10.1246/bcsj.61.2641
日期:1988.7
The thermal decomposition of 1-methyl-1-phenylethyl 2,2-dimethylperoxypropionate was studied in cumene. Based on the kinetic parameters and the decomposition products, it was concluded that the peroxyester was decomposed mainly by means of the radical process in cumene.
Carbon-13 NMR Spectra of Di-<i>t</i>-alkyl Ethers and Related Hindered Ethers
作者:Hiromitsu Masada、Yoshiharu Murotani
DOI:10.1246/bcsj.52.1213
日期:1979.4
The C-13 NMRspectra of hindered t-alkyl ethers and dineopentyl ether have been presented and the electronic and steric effects discussed. The resonances for the α-, methylene β-, and methyl β-carbons of di-t-alkyl ethers shifted downfield by +45, +1.2, and −0.2 ppm, respectively, relative to the corresponding alkanes.
A rubber composition containing (A) a sulfur cross-linkable rubber and (B) a conjugated diene-based rubber gel, having a toluene swelling index of 16 to 70, comprising 40 to 75% by weight of conjugated diene monomer units and 60 to 25% by weight of aromatic vinyl monomer units.
A rubber composition containing (A) a sulfur cross-linkable rubber and (B) a conjugated diene-based rubber gel, having a toluene swelling index of 16 to 70, comprising 40 to 75% by weight of conjugated diene monomer units and 60 to 25% by weight of aromatic vinyl monomer units.