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 (Synlett, 1998)