111437-45-7Relevant academic research and scientific papers
Improved General Method of Ortho Alkylation of Phenols Using Alkyl Isopropyl Sulfide, Sulfuryl Chloride and Triethylamine. An Expedient Synthesis of Representative Oxygen Heterocycles and (2R,4'R,8'R)-α-Tocopherol
Inoue, Seiichi,Ikeda, Hiroshi,Sato, Shuichi,Horie, Kiyohiro,Ota, Tomomi,et al.
, p. 5495 - 5497 (1987)
Functionalized alkyl groups have been introduced regioselectively into the ortho position of phenols via sigmatropic rearrangement of isopropylphenoxysulfonium alkylide, providing a quite efficient synthesis of precursors for chromans, chromens, coumarins, and d-α-tocopherol.
SELECTIVE PREPARATION AND CYCLIZATION OF 2-(2-HYDROXYPHENYL)-2-(ISOPROPYLTHIO)ETHANOLS. NEW SYNTHESIS OF 1-BENZOFURANS
Ota, Tomomi,Hasegawa, Shun,Inoue, Seiichi,Sato, Kikumasa
, p. 3029 - 3036 (2007/10/02)
Reaction of phenols with 2-(isopropylthio)ethyl acetate activated by sulphuryl chloride afforded 2-phenols regioselectively, via sigmatropic rearrangement of phenoxysulphonium ylides.The ortho-alkylated phenols thus obtained have been cyclized with conc. hydrochloric acid in 2-methoxyethanol to 1-benzofurans. 2-Methyl- and 2-phenyl-1-benzofurans have been prepared similarly.
