A Novel Synthesis of 1-Isochromanols<i>via</i>Hetero Diels-Alder Reaction of Carbonyl Compounds with 1-Trimethylsilyloxy-benzocyclobutene as a Precursor of α-Oxy-<i>o</i>-Quinodimethane Under Mild Condition
作者:Keisuke Chino、Toshikazu Takata、Takeshi Endo
DOI:10.1080/00397919608003573
日期:1996.6
Abstract Reaction of 1-trimethylsilyloxybenzocyclobutene(1) with carbonyl compounds catalyzed by tris(dimethylamino)sulfur (trimethylsilyl)difluoride (TASF) at room temperature gave 1-isochromanol derivatives as corresponding hetero Diels-Alder adducts in good yields.
The selective oxidation of the two different benzylethereal position of 3-arylisochromans by dimethyldioxirane as a function of different substituents on the aromatic rings was studied. The easy oxidation of these compounds was exploited for a new easy access to substituted 3-arylisocoumarins. (C) 1999 Elsevier Science Ltd. All rights reserved.