183199-39-5Relevant academic research and scientific papers
An efficient synthesis of peri-hydroxy aromatic compounds: A strong base-induced [4+2]cycloaddition of 4-phenylthio-substituted homophthalic anhydrides with various sulfinyl-substituted dienophiles
Kita, Yasuyuki,Iio, Kiyosei,Okajima, Akiko,Takeda, Yoshifumi,Kawaguchi, Ken-Ichi,Whelan, Brendan A.,Akai, Shuji
, p. 292 - 294 (2007/10/03)
As an extension of the strong base-induced [4+2]cycloaddition of homophthalic anhydrides studied previously, we found a general and versatile synthesis of p-phenylthio substituted phenols by the reaction of 4-phenylthio-substituted homophthalic anhydrides and various dienophiles. The use of the sulfinyl-substituted dienophile is essential to produce the desired reaction under mild conditions in good yield.
Oxidative Intramolecular [4+2]Cycloaddition of o-[(ω-Phenylthioethynyl)acyl]phenols Followed by the Aromatic Pummerer-type Reaction: A Novel Preparation of the peri-Hydroxy Dihydroquinone Structure
Akai, Shuji,Iio, Kiyosei,Takeda, Yoshifumi,Ueno, Hiroshi,Kita, Yasuyuki
, p. 310 - 312 (2007/10/03)
The combination of the oxidative intramolecular [4+2]cycloaddition of o-acylphenol derivatives 10a,b and 16 having the ω-phenylthioethynyl group in the acyl chain and the Pummerer-type reaction of the cyclization products afforded the peri-hydroxy dihydroquinones 9a,b and 18 in good overall yields.
