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
A strong-base induced [4+2] cycloaddition of homophthalic anhydrides with enolizable enones: a direct and efficient synthesis of peri-hydroxy aromatic compounds
作者:Namakkal G. Ramesh、Kiyosei Iio、Akiko Okajima、Shuji Akai、Yasuyuki Kita
DOI:10.1039/a807095d
日期:——
A direct and efficient synthesis of peri-hydroxy aromatic compounds via a strong-base induced [4+2] cycloaddition of homophthalic anhydrides with α-phenylsulfinyl enolizable enones has been accomplished.
An Efficient Synthesis of <i>p</i><i>eri</i>-Hydroxy Aromatic Compounds via a Strong-Base-Induced [4+2] Cycloaddition of Homophthalic Anhydrides with Enolizable Enones
作者:Kiyosei Iio、Namakkal G. Ramesh、Akiko Okajima、Kazuhiro Higuchi、Hiromichi Fujioka、Shuji Akai、Yasuyuki Kita
DOI:10.1021/jo990649q
日期:2000.1.1
An efficient synthesis of peri-hydroxy aromatic compounds has been accomplished via a strong-base-induced [4+2] cycloaddition of homophthalic anhydrides with alpha-sulfinyl-substituted derivatives of enolizable enones. The unsubstituted enones did not undergo an efficient [4+2] cycloaddition reaction with homophthalic anhydrides, presumably due to their enolization under the basic reaction conditions
An Efficient Synthesis of <i>peri</i>-Hydroxy Aromatic Compounds: A Strong Base-Induced [4 + 2]Cycloaddition of 4-Phenylthio-Substituted Homophthalic Anhydrides with Various Sulfinyl-Substituted Dienophiles
作者:Yasuyuki Kita、Kiyosei Iio、Akiko Okajima、Yoshifumi Takeda、Ken-ichi Kawaguchi、Brendan A. Whelan、Shuji Akai
DOI:10.1055/s-1998-1642
日期:1998.3
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.