Reactions of arylacetylenic compounds with arenes in the presence of aluminum halides |
| |
Authors: | A O Shchukin A V Vasil’ev E V Grinenko |
| |
Institution: | 1. St. Petersburg State Academy of Forestry Engineering, Institutskii per. 5, St. Petersburg, 194021, Russia
|
| |
Abstract: | Conjugated arylacetylenic ketones and aldehydes, propargyl-type alcohols, and arylacetylenes reacted with arenes in the presence of AlBr3 or AlCl3 as catalyst to give substituted indenes. 3-Arylpropynoic acids under analogous conditions gave rise to 3,3-diarylindan-1-ones, while the corresponding methyl esters were converted into methyl 3,3-diarylprop-2-enoates. The key intermediates in the transformations of acetylenic ketones and aldehydes and propargyl-type alcohols into indene derivatives are resonance-stabilized propargyl—allenyl cations -C≡ C-C+ ? -C+=C=C which reacted with one of the resonance structures to give isomeric indenes, depending on the substituent nature. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|