Dimethylbenzimidazolium iodide as an available convenient agent has been reacted with a Grignard reagent CH 3(CH 2) 5MgBr to give heptanal. The method need not neccessarily to isolate benzimidazolidine. The reaction m...Dimethylbenzimidazolium iodide as an available convenient agent has been reacted with a Grignard reagent CH 3(CH 2) 5MgBr to give heptanal. The method need not neccessarily to isolate benzimidazolidine. The reaction mechanism is discussed.展开更多
Benzaldehyde was prepared from the addition hydrolysis reaction of C 6H 5MgBr with 1,3 dimethylbenzimidazolium iodide.The reaction mechanism is suggested and discussed.
Methoxybenzaldehyde is prepared from the addition-hydrolysis reaction of p-CH 3OC 6H 4MgBr with 1,3-disubstituted benzimidazolium salt. The reaction mechanism is discussed. 1,3-Dialkyl has little influence on the yield.
The present paper covers a novel method for the preparation of α-naphthylacetone via the addition-hydrolysis reaction of a 2-（α-naphthylmethyl）benzimidazolium salt with Grignard reagent.The IR spectrum,MS and 1H N...The present paper covers a novel method for the preparation of α-naphthylacetone via the addition-hydrolysis reaction of a 2-（α-naphthylmethyl）benzimidazolium salt with Grignard reagent.The IR spectrum,MS and 1H NMR of the title compound are consistent with those reported.This method provides a convenient and inexpensive access to the title compound.The mechanism for the addition-hydrolysis reaction of benzimi-（dazolium） salt with Grignard reagent and the effects of reaction conditions on the yield are discussed.展开更多
文摘Dimethylbenzimidazolium iodide as an available convenient agent has been reacted with a Grignard reagent CH 3(CH 2) 5MgBr to give heptanal. The method need not neccessarily to isolate benzimidazolidine. The reaction mechanism is discussed.
文摘Benzaldehyde was prepared from the addition hydrolysis reaction of C 6H 5MgBr with 1,3 dimethylbenzimidazolium iodide.The reaction mechanism is suggested and discussed.
文摘Methoxybenzaldehyde is prepared from the addition-hydrolysis reaction of p-CH 3OC 6H 4MgBr with 1,3-disubstituted benzimidazolium salt. The reaction mechanism is discussed. 1,3-Dialkyl has little influence on the yield.
文摘The present paper covers a novel method for the preparation of α-naphthylacetone via the addition-hydrolysis reaction of a 2-（α-naphthylmethyl）benzimidazolium salt with Grignard reagent.The IR spectrum,MS and 1H NMR of the title compound are consistent with those reported.This method provides a convenient and inexpensive access to the title compound.The mechanism for the addition-hydrolysis reaction of benzimi-（dazolium） salt with Grignard reagent and the effects of reaction conditions on the yield are discussed.
