desired reductive alkylation of 2-thienyldialkylacetonitriles, a much lower temperature such as -100 ˚C was required. Also with these substrates, an interesting ring-opening/S-alkylation process was observed when the reductive alkylation were performed at -78 ˚C to give 1-alkylsulfanyl-1,3,4-trienes. A mechanistic discussion is given for this observation. reductive alkylation -reductiveaddition- reductive
Mono- vs. dialkylation of carbanions. Effects of absolute and relative acidity of the conjugate carbon acids in selectivity control
作者:Luděk Ridvan、Jiří Závada
DOI:10.1016/s0040-4020(97)00989-7
日期:1997.10
in the reaction of the dibromide 1 with carbanions 2a – 2g covering a range greater than 15 pK units in DMSO. It was found that the bis(monoalkylated) product 3 arises exclusively or predominantly from the carbanions 2d – 2g derived from the less acidic carbon acids 7d – 7g whereas the cyclic product of dialkylation 4 prevails in the reaction of the carbanions 2a – 2c derived from the more acidic carbon
Alkylation and Hydrolysis of Phenylacetonitriles Under Microwave Irradiation
作者:Didier Barbry、Corinne Pasquier、Catherine Faven
DOI:10.1080/00397919508011433
日期:1995.10
Abstract Alkylation of phenylacetonitriles is performed by solid-liquid phase transfer catalysis in 1–3 minutes under microwave irradiation (one hour with a two-phase system). These nitriles can be quickly hydrolysed in a microwave oven to yield the corresponding amides or acids according to the reaction time.
Benzylation of Acetylene. II. On the Structure and Oxidation of 3-Benzyl-3,4-diphenyl-1-Butyne
作者:Teisuke Ando、Niichiro Tokura
DOI:10.1246/bcsj.31.351
日期:1958.3
The equimolar reaction between benzyl chloride and sodiumacetylide in liquid ammonia resulted in the formation of 3-benzyl-3,4-diphenyl-1-butyne in addition to 3,4-diphenyl-1-butyne and 3,4-diphenyl-1,2-butadiene. This compound resisted various oxidative reagents except potassium permanganate. 2-Benzyl-2,3-diphenylpropionic acid was obtained in two polymorphs.
This invention relates to a process of producing compounds, which are useful as bleach boosters, as well as to the compounds, which are obtainable using said process, and to their use.