Telomerization of Isobutylene with Carbon Tetrachloride and Synthesis of β β-Dimethylacrylic Acid from Its 1 : 1 Adduct (1, 1, 1, 3-Tetrachloro-3-methylbutane)

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  • イソブチレンと四塩化炭素のテロメリゼーションおよびその1 : 1付加体からのβ, β-ジメチルアクリル酸の合成
  • イソブチレン ト 4エンカ タンソ ノ テロメリゼーション オヨビ ソノ 1 1 フカタイ カラ ノ ベータ , ベータ-ジメチルアクリルサン ノ ゴウセイ

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Abstract

Telomerization of isobutylene with carbon tetrachloride in the presence of copper salts- aliphatic amines as the initiator system was investigated, and the 1 : 1 adduct (1, 1, 1, 3-tetrachloro-3-methylbutane) was obtained in yields over 90 mol %, based on the isobutylene. Then the hydrolyses of 1 : 1 adduct with sulfuric acid were carried out under various reaction conditions.<BR>From the results of these investigations, it was confirmed that β β-dimethylacrylic acid is prepared in a two-stage process from isobutylene in overall yield of 7080 mol %, based on isobutylene.

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